Summary of Clinical Studies & Results In March 2021, we initiated a Phase 1 trial of ADG126 (ADG126-1001) as monotherapy to evaluate safety and determine a RP2D in patients with advance metastatic tumors, using a traditional “3+3” dose escalation design.
Summary of Monotherapy Clinical Studies & Results In March 2021, we initiated a Phase 1 trial of ADG126 (ADG126-1001) as monotherapy to evaluate safety and determine a RP2D in patients with advance metastatic tumors, using a traditional “3+3” dose escalation design.
The clinical collaboration and supply agreements include two open-label, dose escalation and expansion clinical studies to evaluate our anti-CTLA-4 mAb product candidates, ADG116 and ADG126, in combination with pembrolizumab for patients with advanced/metastatic solid tumors, respectively.
The clinical collaboration and supply agreements include two open-label, dose escalation and expansion clinical studies to evaluate our anti-CTLA-4 mAb product candidates, ADG126 and ADG116, in combination with pembrolizumab for patients with advanced/metastatic solid tumors, respectively.
The NIH now leads and is responsible for the manufacturing and clinical development of the CAR-T cell therapy candidate. ● Under a material transfer agreement, we developed SAFEbody drug conjugates candidates against a tumor target selected by Tanabe Research Laboratories, Inc. ● We had worked with Celgene (now Bristol-Myers Squibb) to discover antibodies targeting novel antigens using our proprietary DPL platform. ● We collaborated with GlaxoSmithKline (China), or GSK China, where we were engaged to generate high affinity antibodies against multiple epitopes of multi-transmembrane targets; and ● We worked with Jiangsu Hengrui Medicine Company Limited, or Jiangsu Hengrui, where we were able to discover cross-reactive agonistic antibody for immuno-oncology.
The NIH leads and is responsible for the manufacturing and clinical development of the CAR-T cell therapy candidate. ● Under a material transfer agreement, we developed SAFEbody drug conjugates candidates against a tumor target selected by Tanabe Research Laboratories, Inc. ● We had worked with Celgene (now Bristol-Myers Squibb) to discover antibodies targeting novel antigens using our proprietary DPL platform. ● We collaborated with GlaxoSmithKline (China), or GSK China, where we were engaged to generate high affinity antibodies against multiple epitopes of multi-transmembrane targets; and ● We worked with Jiangsu Hengrui Medicine Company Limited, or Jiangsu Hengrui, where we were able to discover cross-reactive agonistic antibody for immuno-oncology.
Our patent strategy is focused on seeking coverage for our core technologies and products, such as the DPL platform, ADG116, ADG126, ADG106 and ADG206.
Our patent strategy is focused on seeking coverage for our core technologies and products, such as the DPL platform, ADG126, ADG116, ADG206 and ADG106.
The Draft Data Security Regulations provide a broad definition of “data processing activities,” including collection, storage, usage, processing, transfer, provision, publication, deletion and other activities, which covers the entire life cycle of data processing.
The Draft Data Security Regulations provide a broad definition of “data processing activities,” including collection, storage, usage, processing, transfer, provision, publication, deletion and other activities, which covers the entire life cycle of data processing.
Such laws include, without limitation: ● the U.S. federal Anti-Kickback Statute, which prohibits, among other things, persons and entities from knowingly and willfully soliciting, receiving, offering or paying remuneration, to induce, or in return for, either the referral of an individual, or the purchase or recommendation of an item or service for which payment may be made under any federal healthcare program; ● federal civil and criminal false claims laws, including the civil False Claims Act, and civil monetary penalty laws, which prohibit, among other things, individuals or entities from knowingly presenting, or causing to be presented, claims for payment to the federal government, including federal healthcare programs, that are false or fraudulent; ● the federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, which created additional federal criminal statutes which prohibit, among other things, executing a scheme to defraud any healthcare benefit program and making false statements relating to healthcare matters, and which, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009, or HITECH, also imposes certain requirements on HIPAA covered entities and their business associates relating to the privacy, security and transmission of individually identifiable health information; ● the U.S. federal Physician Payments Sunshine Act, which requires certain manufacturers of drugs, devices, biologics and medical supplies for which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program, with specific exceptions, to annually report to the federal government, information related to payments or other transfers of value made to physicians, as defined by such law, certain other health care providers beginning in 2022, and teaching hospitals, as well as ownership and investment interests held by physicians and their immediate family members; and ● United States state and foreign law equivalents of each of the above federal laws, which, in some cases, differ from each other in significant ways, and may not have the same effect, thus complicating compliance efforts, including laws governing the privacy and security of personal data, such as the GDPR, which imposes obligations and restrictions on the collection and use of personal data relating to individuals located in the EU and EEA (including with regard to health data). 133 Table of Contents If their operations are found to be in violation of any of such laws or any other governmental regulations that apply, they may be subject to significant penalties, including, without limitation, civil, criminal and administrative penalties, damages, fines, exclusion from government-funded healthcare programs, such as Medicare and Medicaid or similar programs in other countries or jurisdictions, integrity oversight and reporting obligations to resolve allegations of non-compliance, disgorgement, imprisonment, contractual damages, reputational harm, diminished profits and the curtailment or restructuring of our operations.
Such laws include, without limitation: ● the U.S. federal Anti-Kickback Statute, which prohibits, among other things, persons and entities from knowingly and willfully soliciting, receiving, offering or paying remuneration, to induce, or in return for, either the referral of an individual, or the purchase or recommendation of an item or service for which payment may be made under any federal healthcare program; ● federal civil and criminal false claims laws, including the civil False Claims Act, and civil monetary penalty laws, which prohibit, among other things, individuals or entities from knowingly presenting, or causing to be presented, claims for payment to the federal government, including federal healthcare programs, that are false or fraudulent; ● the federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, which created additional federal criminal statutes which prohibit, among other things, executing a scheme to defraud any healthcare benefit program and making false statements relating to healthcare matters, and which, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009, or HITECH, also imposes certain requirements on HIPAA covered entities and their business associates relating to the privacy, security and transmission of individually identifiable health information; ● the U.S. federal Physician Payments Sunshine Act, which requires certain manufacturers of drugs, devices, biologics and medical supplies for which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program, with specific exceptions, to annually report to the federal government, information related to payments or other transfers of value made to physicians, as defined by such law, certain other health care providers beginning in 2022, and teaching hospitals, as well as ownership and investment interests held by physicians and their immediate family members; and ● United States state and foreign law equivalents of each of the above federal laws, which, in some cases, differ from each other in significant ways, and may not have the same effect, thus complicating compliance efforts, including laws governing the privacy and security of personal data, such as the GDPR, which imposes obligations and restrictions on the collection and use of personal data relating to individuals located in the EU and EEA (including with regard to health data). 124 Table of Contents If their operations are found to be in violation of any of such laws or any other governmental regulations that apply, they may be subject to significant penalties, including, without limitation, civil, criminal and administrative penalties, damages, fines, exclusion from government-funded healthcare programs, such as Medicare and Medicaid or similar programs in other countries or jurisdictions, integrity oversight and reporting obligations to resolve allegations of non-compliance, disgorgement, imprisonment, contractual damages, reputational harm, diminished profits and the curtailment or restructuring of our operations.
The Revised GCP Rules also set out the qualifications and requirements for the investigators and centers participating in clinical trial, who must: (i) have professional certification at a clinical trial center, professional knowledge, training experience and capability of clinical trial, and be able to provide the latest resume and relevant qualification documents per request; (ii) be familiar with the trial protocol, investigator’s brochure and relevant information of the trial drug provided by the applicant; (iii) be familiar with and comply with the Revised GCP Rules and relevant laws and regulations relating to clinical trials; (iv) keep a copy of the authorization form on work allocation signed by investigators; (v) accept supervision and inspection organized by the applicant and inspection by the drug regulatory authorities; and (vi) in the case of investigators and clinical trial centers authorizing other individual or institution to undertake certain responsibilities and functions relating to clinical trial, they shall ensure such individual or institution are qualified and establish complete procedures to ensure the responsibilities and functions are fully performed and generate reliable data. 140 Table of Contents Communication with the CDE According to the Circular on Adjusting Evaluation and Approval Procedures for Clinical Trials for Drugs, where the application for clinical trial of new investigational drug has been approved, upon the completion of Phases I and II clinical trials and prior to Phase III clinical trial, the applicant shall submit the application for Communication Session to the CDE to discuss the key technical questions including the design of Phase III clinical trial protocol.
The Revised GCP Rules also set out the qualifications and requirements for the investigators and centers participating in clinical trial, who must: (i) have professional certification at a clinical trial center, professional knowledge, training experience and capability of clinical trial, and be able to provide the latest resume and relevant qualification documents per request; (ii) be familiar with the trial protocol, investigator’s brochure and relevant information of the trial drug provided by the applicant; (iii) be familiar with and comply with the Revised GCP Rules and relevant laws and regulations relating to clinical trials; (iv) keep a copy of the authorization form on work allocation signed by investigators; (v) accept supervision and inspection organized by the applicant and inspection by the drug regulatory authorities; and (vi) in the case of investigators and clinical trial centers authorizing other individual or institution to undertake certain responsibilities and functions relating to clinical trial, they shall ensure such individual or institution are qualified and establish complete procedures to ensure the responsibilities and functions are fully performed and generate reliable data. 131 Table of Contents Communication with the CDE According to the Circular on Adjusting Evaluation and Approval Procedures for Clinical Trials for Drugs, where the application for clinical trial of new investigational drug has been approved, upon the completion of Phases I and II clinical trials and prior to Phase III clinical trial, the applicant shall submit the application for Communication Session to the CDE to discuss the key technical questions including the design of Phase III clinical trial protocol.
The process required by the FDA before biologic product candidates may be marketed in the United States generally involves the following: ● completion of preclinical laboratory tests and animal studies performed in accordance with the FDA’s GLP regulations; ● submission to the FDA of an IND, which must become effective before clinical trials may begin and must be updated annually or when significant changes are made; ● approval by an independent Institutional Review Board, or IRB, or ethics committee at each clinical site before the trial is commenced; ● performance of adequate and well-controlled human clinical trials to establish the safety and effectiveness of the proposed biologic product candidate for its intended indications; 127 Table of Contents ● preparation of and submission to the FDA of a BLA when adequate data are obtained from pivotal clinical trials; ● a determination by the FDA within 60 days of its receipt of a BLA to accept the application for review; ● satisfactory completion of an FDA Advisory Committee review, if applicable; ● satisfactory completion of an FDA pre-approval inspection of the manufacturing facility or facilities at which the proposed product is produced to assess compliance with cGMP and to assure that the facilities, methods and controls are adequate to preserve the biological product’s continued safety, purity and potency, and of selected clinical investigation sites to assess compliance with Good Clinical Practices, or GCP regulations; and ● FDA review and approval of the BLA to permit commercial marketing of the product for particular indications for use in the United States.
The process required by the FDA before biologic product candidates may be marketed in the United States generally involves the following: ● completion of preclinical laboratory tests and animal studies performed in accordance with the FDA’s GLP regulations; ● submission to the FDA of an IND, which must become effective before clinical trials may begin and must be updated annually or when significant changes are made; ● approval by an independent Institutional Review Board, or IRB, or ethics committee at each clinical site before the trial is commenced; ● performance of adequate and well-controlled human clinical trials to establish the safety and effectiveness of the proposed biologic product candidate for its intended indications; ● preparation of and submission to the FDA of a BLA when adequate data are obtained from pivotal clinical trials; 118 Table of Contents ● a determination by the FDA within 60 days of its receipt of a BLA to accept the application for review; ● satisfactory completion of an FDA Advisory Committee review, if applicable; ● satisfactory completion of an FDA pre-approval inspection of the manufacturing facility or facilities at which the proposed product is produced to assess compliance with cGMP and to assure that the facilities, methods and controls are adequate to preserve the biological product’s continued safety, purity and potency, and of selected clinical investigation sites to assess compliance with Good Clinical Practices, or GCP regulations; and ● FDA review and approval of the BLA to permit commercial marketing of the product for particular indications for use in the United States.
In addition to the marketed anti-CTLA-4 therapies, there are multiple “next generation” anti-CTLA-4 antibodies in clinical development globally. Examples of these programs include: Agenus (Zalifrelimab/AGEN1181), Bristol-Myers Squibb Company (BMS-986249, BMS-986288), Merck (quavonlimab/MA-1308), Onco-C4, Inc. (ONC-392) and Xilio (XTX101). Yervoy was also approved in China in 2021, where additional CTLA-4 antibodies are in clinical development.
In addition to the marketed anti-CTLA-4 therapies, there are multiple “next generation” anti-CTLA-4 antibodies in clinical development globally. Examples of these programs include: Agenus (Zalifrelimab/AGEN1181), Bristol-Myers Squibb Company (BMS-986288), Merck (quavonlimab/MA-1308), Onco-C4, Inc. (ONC-392) and Xilio (XTX101). Yervoy was also approved in China in 2021, where additional CTLA-4 antibodies are in clinical development.
We cannot predict the impact of the Draft Data Security Regulations, if any, at this stage, and we will closely monitor and assess any development in the rule-making process. 84 Table of Contents As advised by our PRC legal counsel, Jingtian & Gongcheng, given the nature of our business, since we do not possess or process personal information of more than one million users/individuals, and we do not believe we are a “critical information infrastructure operator,” “network platform operator” or a data processor whose purchase of network products and services or data processing activities affect or may affect national security, the listing of our ADSs on the Nasdaq and future potential offering of our ADSs will not be subject to the cybersecurity review process under the Cybersecurity Review Measures, although we cannot guarantee that the relevant PRC regulatory authority will agree with our interpretation.
We cannot predict the impact of the Draft Data Security Regulations, if any, at this stage, and we will closely monitor and assess any development in the rule-making process. 83 Table of Contents As advised by our PRC legal counsel, Jingtian & Gongcheng, given the nature of our business, since we do not possess or process personal information of more than one million users/individuals, and we do not believe we are a “critical information infrastructure operator,” “network platform operator” or a data processor whose purchase of network products and services or data processing activities affect or may affect national security, the listing of our ADSs on the Nasdaq and future potential offering of our ADSs will not be subject to the cybersecurity review process under the Cybersecurity Review Measures, although we cannot guarantee that the relevant PRC regulatory authority will agree with our interpretation.
The determination as to whether or not an overseas offering and listing by PRC domestic companies is indirect shall be made on a “substance over form” basis; the Listing Guidelines further stipulate that if an issuer not satisfying Condition I submits an application for issuance and listing in overseas markets in accordance with relevant non-PRC issuance regulations requiring such issuer to disclose risk factors mainly related to the PRC, the securities firm(s) and the issuer’s PRC counsel should follow the principle of “substance over form” in order to identify and argue whether the issuer should complete a filing under the Trial Measures. 150 Table of Contents Subsequent securities offerings of an issuer in (i) the same overseas market where it has previously offered and listed securities, and (ii) an overseas market other than one where the issuer has previously offered and listed securities shall be filed with the CSRC within three working days after offerings are completed.
The determination as to whether or not an overseas offering and listing by PRC domestic companies is indirect shall be made on a “substance over form” basis; the Listing Guidelines further stipulate that if an issuer not satisfying Condition I submits an application for issuance and listing in overseas markets in accordance with relevant non-PRC issuance regulations requiring such issuer to disclose risk factors mainly related to the PRC, the securities firm(s) and the issuer’s PRC counsel should follow the principle of “substance over form” in order to identify and argue whether the issuer should complete a filing under the Trial Measures. 141 Table of Contents Subsequent securities offerings of an issuer in (i) the same overseas market where it has previously offered and listed securities, and (ii) an overseas market other than one where the issuer has previously offered and listed securities shall be filed with the CSRC within three working days after offerings are completed.
According to the Eight Measures for the Public Security Fire Department to Deepen Reform and Serve Economic and Social Development promulgated by the Ministry of Public Security of the PRC in August 2015, the fire protection design and completion acceptance fire protection record of construction projects with an investment of less than RMB300,000 or a building area of less than 300 square meters (or below the limit set by the housing and urban construction department of the provincial people’s government) was no longer required. 149 Table of Contents Regulations on Overseas Securities Offering and Listing In December 2021, the CSRC promulgated the Provisions of the State Council on the Administration of Overseas Securities Offering and Listing by Domestic Companies (Draft for Comments), or the Draft CSRC Administration Provisions, and the Administrative Measures for the Filing of Overseas Securities Offering and Listing by Domestic Companies (Draft for Comments), or the Draft CSRC Filing Measures, to regulate overseas offerings by domestic companies of equity shares, depository receipts, convertible corporate bonds, or other equity-like securities, and overseas listing of the securities for trading.
According to the Eight Measures for the Public Security Fire Department to Deepen Reform and Serve Economic and Social Development promulgated by the Ministry of Public Security of the PRC in August 2015, the fire protection design and completion acceptance fire protection record of construction projects with an investment of less than RMB300,000 or a building area of less than 300 square meters (or below the limit set by the housing and urban construction department of the provincial people’s government) was no longer required. 140 Table of Contents Regulations on Overseas Securities Offering and Listing In December 2021, the CSRC promulgated the Provisions of the State Council on the Administration of Overseas Securities Offering and Listing by Domestic Companies (Draft for Comments), or the Draft CSRC Administration Provisions, and the Administrative Measures for the Filing of Overseas Securities Offering and Listing by Domestic Companies (Draft for Comments), or the Draft CSRC Filing Measures, to regulate overseas offerings by domestic companies of equity shares, depository receipts, convertible corporate bonds, or other equity-like securities, and overseas listing of the securities for trading.
ADG126 has shown a best-in-class safety profile in clinic, consistent with preclinical evaluation enabled by the broad species cross-reactivity of ADG126, including GLP toxicology data. In September 2022 and April 2023, we presented these clinical results from our ADG126 monotherapy evaluation at the ESMO and AACR annual meetings, respectively.
ADG126 has shown a differentiated, best-in-class safety profile in clinic, consistent with preclinical evaluation enabled by the broad species cross-reactivity of ADG126, including GLP toxicology data. In September 2022 and April 2023, we presented these clinical results from our ADG126 monotherapy evaluation at the ESMO and AACR annual meetings, respectively.
The following figures illustrate the reduction of CTLA-4 expression in infiltrating lymphocytes, or TILs (see figure below on the left) and regulatory T-cell depletion (see figure below on the right) by ADG126 in CT26 tumor model. Note: "Treg" refers to regulatory T-cells Preclinical Toxicology: We performed preclinical toxicology studies designed to assess the toxicity features of ADG126.
The following figures illustrate the reduction of CTLA-4 expression in infiltrating lymphocytes, or TILs (see figure below on the left) and regulatory T-cell depletion (see figure below on the right) by ADG126 in CT26 tumor model. Note: “ Treg ” refers to regulatory T-cells Preclinical Toxicology: We performed preclinical toxicology studies designed to assess the toxicity features of ADG126.
For products containing new molecular entities, priority review designation means the FDA’s goal is to take action on the marketing application within six months of the 60-day filing date (compared with ten months under standard review). 130 Table of Contents Additionally, products studied for their safety and effectiveness in treating serious or life-threatening diseases or conditions may receive accelerated approval upon a determination that the product has an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical endpoint that can be measured earlier than irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible morbidity or mortality or other clinical benefit, taking into account the severity, rarity, or prevalence of the condition and the availability or lack of alternative treatments.
For products containing new molecular entities, priority review designation means the FDA’s goal is to take action on the marketing application within six months of the 60-day filing date (compared with ten months under standard review). 121 Table of Contents Additionally, products studied for their safety and effectiveness in treating serious or life-threatening diseases or conditions may receive accelerated approval upon a determination that the product has an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical endpoint that can be measured earlier than irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible morbidity or mortality or other clinical benefit, taking into account the severity, rarity, or prevalence of the condition and the availability or lack of alternative treatments.
If the products are produced or sold with known defects, causing deaths or severe adverse health issues, the infringed party has the right to claim punitive damages in addition to compensatory damages. 148 Table of Contents Regulations on Environment Protection Pursuant to the Environmental Protection Law of the PRC promulgated by the Standing Committee of the NPC, in December 1989, amended in April 2014 and effective in January 2015, any entity which discharges or will discharge pollutants during its course of operations or other activities must implement effective environmental protection safeguards and procedures to control and properly treat waste gas, waste water, waste residue, dust, malodorous gases, radioactive substances, noise vibrations, electromagnetic radiation and other hazards produced during such activities.
If the products are produced or sold with known defects, causing deaths or severe adverse health issues, the infringed party has the right to claim punitive damages in addition to compensatory damages. 139 Table of Contents Regulations on Environment Protection Pursuant to the Environmental Protection Law of the PRC promulgated by the Standing Committee of the NPC, in December 1989, amended in April 2014 and effective in January 2015, any entity which discharges or will discharge pollutants during its course of operations or other activities must implement effective environmental protection safeguards and procedures to control and properly treat waste gas, waste water, waste residue, dust, malodorous gases, radioactive substances, noise vibrations, electromagnetic radiation and other hazards produced during such activities.
In addition to the upfront payment of US$11.0 million received in 2021, in the aggregate, we could be eligible to receive up to US$55,000,000 in development milestone payments, among which we have received US$3.0 million in 2022, US$200,000,000 in regulatory milestone payments, and up to US$525,000,000 in sales milestone payments for both targets under the Exelixis Agreement.
In addition to the upfront payment of US$11.0 million received in 2021, in the aggregate, we could be eligible to receive up to US$55,000,000 in development milestone payments, among which we have received US$3.0 million in 2022 and US$3.0 million in 2023, US$200,000,000 in regulatory milestone payments, and up to US$525,000,000 in sales milestone payments for both targets under the Exelixis Agreement.
The abundant discovery hits with diversified binding epitopes show the power of our AI-powered DPL platform not only in creating novel antibodies in targeting different epitopes of a given antigen, but also in targeting the conserved epitope across different species of a given antigen with broad species cross-reactivity from human, monkey to mouse, which enables us to study their efficacy and safety in extensive immuno-competent or syngeneic animal models, to explore their pharmacodynamics and predictive biomarkers in responding vs nonresponding tumor models in vivo, and to understand their deep target biology and novel MOA before testing them in human clinical trials to look for their clinical signals consistent with their MOA.
The abundant discovery hits with diversified binding epitopes show the power of our DPL platform not only in creating novel antibodies in targeting different epitopes of a given antigen, but also in targeting the conserved epitope across different species of a given antigen with broad species cross-reactivity from human, monkey to mouse, which enables us to study their efficacy and safety in extensive immuno-competent or syngeneic animal models, to explore their pharmacodynamics and predictive biomarkers in responding vs nonresponding tumor models in vivo, and to understand their deep target biology and novel MOA before testing them in human clinical trials to look for their clinical signals consistent with their MOA.
The ACA contains a number of provisions of particular import to the pharmaceutical and biotechnology industries, including, but not limited to, those governing enrollment in federal healthcare programs, a new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled, implanted or injected, and annual fees based on pharmaceutical companies’ share of sales to federal healthcare programs. 134 Table of Contents Since its enactment, there have been judicial, Congressional, and executive branch challenges to certain aspects of the ACA, and we expect there will be additional challenges and amendments to the ACA in the future.
The ACA contains a number of provisions of particular import to the pharmaceutical and biotechnology industries, including, but not limited to, those governing enrollment in federal healthcare programs, a new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled, implanted or injected, and annual fees based on pharmaceutical companies’ share of sales to federal healthcare programs. 125 Table of Contents Since its enactment, there have been judicial, Congressional, and executive branch challenges to certain aspects of the ACA, and we expect there will be additional challenges and amendments to the ACA in the future.
We believe that the high affinity and species cross-reactive primary hits from our DPL library screening saves time and cost from primary hits to straight PCC. The broad species cross-reactivity of the primary hits also streamlines lead identification through simple syngeneic tumor models for safety and efficacy testing.
We believe that the high affinity and species cross-reactive primary hits from our DPL screening saves time and cost from primary hits to straight PCC. The broad species cross-reactivity of the primary hits also streamlines lead identification through simple syngeneic tumor models for safety and efficacy testing.
Previously, we have entered into technology licensing agreements with Sanofi, Exelixis and ADC Therapeutics to develop antibody-based therapeutics against tumor targets using our SAFEbody technology. We have also out-licensed the Greater China rights for two antibody candidates to Dragon Boat Pharmaceuticals and its affiliates.
Previously, we have entered into technology licensing agreements with Sanofi and Exelixis to develop antibody-based therapeutics against tumor targets using our SAFEbody technology. We have also out-licensed the Greater China rights for two antibody candidates to Dragon Boat Pharmaceuticals and its affiliates.
Biosimilars and Reference Product Exclusivity The Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act, or collectively, the ACA, signed into law in 2010, includes a subtitle called the Biologics Price Competition and Innovation Act of 2009, or BPCIA, which created an abbreviated approval pathway for biological products that are biosimilar to or interchangeable with an FDA-approved reference biological product. 132 Table of Contents Biosimilarity, which requires that there be no clinically meaningful differences between the biological product and the reference product in terms of safety, purity, and potency, can be shown through analytical studies, animal studies, and a clinical trial or studies.
Biosimilars and Reference Product Exclusivity The Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act, or collectively, the ACA, signed into law in 2010, includes a subtitle called the Biologics Price Competition and Innovation Act of 2009, or BPCIA, which created an abbreviated approval pathway for biological products that are biosimilar to or interchangeable with an FDA-approved reference biological product. 123 Table of Contents Biosimilarity, which requires that there be no clinically meaningful differences between the biological product and the reference product in terms of safety, purity, and potency, can be shown through analytical studies, animal studies, and a clinical trial or studies.
The Revised GCP Rules summarize the requirements for initiating an MRCT, that is, before initiating an MRCT: (i) the applicant shall ensure that all the centers participating in the clinical trial comply with the trial protocol; (ii) the applicant shall provide each center with the same trial protocol, and each center shall comply with the same unified evaluation criterion for clinical trial and laboratory data and the same guidance for case report form; (iii) each center shall use the same case report form to record the data of each human subject obtained during the trial; (iv) before initiating a clinical trial, a written document is required to specify the responsibilities of the investigators of each center; and (v) the applicant shall ensure the communication among the investigators of each center. 142 Table of Contents Data derived from international multi-center clinical trials can be used for the new drug applications with the NMPA.
The Revised GCP Rules summarize the requirements for initiating an MRCT, that is, before initiating an MRCT: (i) the applicant shall ensure that all the centers participating in the clinical trial comply with the trial protocol; (ii) the applicant shall provide each center with the same trial protocol, and each center shall comply with the same unified evaluation criterion for clinical trial and laboratory data and the same guidance for case report form; (iii) each center shall use the same case report form to record the data of each human subject obtained during the trial; (iv) before initiating a clinical trial, a written document is required to specify the responsibilities of the investigators of each center; and (v) the applicant shall ensure the communication among the investigators of each center. 133 Table of Contents Data derived from international multi-center clinical trials can be used for the new drug applications with the NMPA.
In addition, exclusive marketing rights in the United States may be lost if the FDA later determines that the request for designation was materially defective or if the manufacturer is unable to assure sufficient quantities of the product to meet the needs of patients with the rare disease or condition. 131 Table of Contents Post-Approval Requirements Any products manufactured or distributed by us pursuant to FDA approvals are subject to pervasive and continuing regulation by the FDA, including, among other things, requirements relating to record keeping, reporting of adverse experiences, periodic reporting, product sampling and distribution, and advertising and promotion of the product.
In addition, exclusive marketing rights in the United States may be lost if the FDA later determines that the request for designation was materially defective or if the manufacturer is unable to assure sufficient quantities of the product to meet the needs of patients with the rare disease or condition. 122 Table of Contents Post-Approval Requirements Any products manufactured or distributed by us pursuant to FDA approvals are subject to pervasive and continuing regulation by the FDA, including, among other things, requirements relating to record keeping, reporting of adverse experiences, periodic reporting, product sampling and distribution, and advertising and promotion of the product.
See “Item 3 Key Information—3.D.Risk Factors—Risks Related to Doing Business in the PRC—Failure to comply with existing or future laws and regulations related to privacy or data security could lead to government enforcement actions, which could include civil or criminal fines or penalties, investigation or sanction by regulatory authorities, private litigation, other liabilities, and/or adverse publicity.” 85 Table of Contents Material Licenses and Approvals Our PRC subsidiary has obtained all material licenses and approvals required for our operations in China.
See “Item 3 Key Information—3.D.Risk Factors—Risks Related to Doing Business in the PRC—Failure to comply with existing or future laws and regulations related to privacy or data security could lead to government enforcement actions, which could include civil or criminal fines or penalties, investigation or sanction by regulatory authorities, private litigation, other liabilities, and/or adverse publicity.” 84 Table of Contents Material Licenses and Approvals Our PRC subsidiary has obtained all material licenses and approvals required for our operations in China.
J Immunother Cancer 2020;8:e000391. doi:10.1136/jitc-2019-000391 92 Table of Contents The following chart shows that ipilimumab has a strong dose-dependent toxicity and efficacy in the combination setting with anti-PD-1, as shown for second-line HCC: Ipilimumab: Combination Data in HCC Highlight Dose Dependent Challenge of Anti-CTLA-4 Therapy For HCC, approved dose level is Nivo 1mg/kg+ Ipi 3mg/kg; Nivo + 4 doses of Ipi; patient population is previously treated with sorafenib (2L); dosing regimens Q3W for 4 doses.
J Immunother Cancer 2020;8:e000391. doi:10.1136/jitc-2019-000391 The following chart shows that ipilimumab has a strong dose-dependent toxicity and efficacy in the combination setting with anti-PD-1, as shown for second-line HCC: Ipilimumab: Combination Data in HCC Highlight Dose Dependent Challenge of Anti-CTLA-4 Therapy 89 Table of Contents For HCC, approved dose level is Nivo 1mg/kg+ Ipi 3mg/kg; Nivo + 4 doses of Ipi; patient population is previously treated with sorafenib (2L); dosing regimens Q3W for 4 doses.
Our approach recognizes that a protein’s native state is not accurately represented by a single static structure but rather by a variety of structures in dynamic equilibrium, resulting in a high level of functional diversity, in contrast to the conventional static antibody drug discovery paradigm of “one sequence, one structure and one function.” We have developed our proprietary AI-Powered DPL platform to explore the dynamic conformational diversity of protein sequences, and the flexible binding sites of antibody sequences in particular, as a new paradigm for antibody drug discovery.
Our approach recognizes that a protein’s native state is not accurately represented by a single static structure but rather by a variety of structures in dynamic equilibrium, resulting in a high level of functional diversity, in contrast to the conventional static antibody drug discovery paradigm of “one sequence, one structure and one function.” We have developed our proprietary DPL platform to explore the dynamic conformational diversity of protein sequences, and the flexible binding sites of antibody sequences in particular, as a new paradigm for antibody drug discovery.
The parties whose trade secrets are being misappropriated may petition for administrative corrections, and regulatory authorities may stop any illegal activities and fine infringing parties. 145 Table of Contents Trademarks According to the Trademark Law of the PRC promulgated by the Standing Committee of the NPC in August 1982, and amended in February 1993, October 2001, August 2013 and April 2019, respectively, the period of validity for a registered trademark is ten years, commencing on the date of registration.
The parties whose trade secrets are being misappropriated may petition for administrative corrections, and regulatory authorities may stop any illegal activities and fine infringing parties. 136 Table of Contents Trademarks According to the Trademark Law of the PRC promulgated by the Standing Committee of the NPC in August 1982, and amended in February 1993, October 2001, August 2013 and April 2019, respectively, the period of validity for a registered trademark is ten years, commencing on the date of registration.
The processing of personal information shall follow the principles of lawfulness, legitimacy, necessity and good faith, and it is not allowed to process personal information by misleading, fraud, coercion or otherwise. 146 Table of Contents Information security and review On November 7, 2016, the Standing Committee of NPC promulgated the Cybersecurity Law of the PRC, which became effective on June 1, 2017, pursuant to which, network operators shall fulfill their obligations to safeguard security of the network when conducting business and providing services.
The processing of personal information shall follow the principles of lawfulness, legitimacy, necessity and good faith, and it is not allowed to process personal information by misleading, fraud, coercion or otherwise. 137 Table of Contents Information security and review On November 7, 2016, the Standing Committee of NPC promulgated the Cybersecurity Law of the PRC, which became effective on June 1, 2017, pursuant to which, network operators shall fulfill their obligations to safeguard security of the network when conducting business and providing services.
The following table summarizes material pending patent applications in the United States, China, Europe and under Patent Cooperation Treaty, or PCT, covering our product candidates, including ADG116, ADG126, ADG106 and ADG104 and ADG125.
The following table summarizes material pending patent applications in the United States, China, Europe and under Patent Cooperation Treaty, or PCT, covering our product candidates, including ADG126, ADG116, ADG206, ADG106, ADG104 and ADG125.
The primary responsibilities of the NMPA include: ● monitoring and supervising the administration of pharmaceutical products, medical appliances and equipment as well as cosmetics in the PRC; ● formulating administrative rules and policies concerning the supervision and administration of pharmaceutical, medical devices, and cosmetics industry; ● evaluating, registering and approving new drugs, generic drugs, imported drugs and traditional Chinese medicine; ● approving and issuing permits for the manufacture and export/import of pharmaceutical products, medical appliances and equipment; 137 Table of Contents ● approving the establishment of enterprises to be engaged in the manufacture and distribution of pharmaceutical products; ● examining and evaluating the safety of pharmaceutical products, medical devices, and cosmetics; and ● managing significant accidents involving pharmaceutical products, medical devices and cosmetics.
The primary responsibilities of the NMPA include: ● monitoring and supervising the administration of pharmaceutical products, medical appliances and equipment as well as cosmetics in the PRC; ● formulating administrative rules and policies concerning the supervision and administration of pharmaceutical, medical devices, and cosmetics industry; ● evaluating, registering and approving new drugs, generic drugs, imported drugs and traditional Chinese medicine; ● approving and issuing permits for the manufacture and export/import of pharmaceutical products, medical appliances and equipment; 128 Table of Contents ● approving the establishment of enterprises to be engaged in the manufacture and distribution of pharmaceutical products; ● examining and evaluating the safety of pharmaceutical products, medical devices, and cosmetics; and ● managing significant accidents involving pharmaceutical products, medical devices and cosmetics.
Taken together, these preclinical studies (summarized below) have demonstrated that ADG116 has at least a five-fold greater potency profile than ipilimumab, a commercially-available anti-CTLA-4 therapy, and superior activity in various tumor specific models, while its safety profile is at least three-fold better based on GLP monkey data. 95 Table of Contents ADG116 is designed to target a unique conserved epitope of CTLA-4.
Taken together, these preclinical studies (summarized below) have demonstrated that ADG116 has at least a five-fold greater potency profile than ipilimumab, a commercially-available anti-CTLA-4 therapy, and superior activity in various tumor specific models, while its safety profile is at least three-fold better based on GLP monkey data. 101 Table of Contents ADG116 is designed to target a unique conserved epitope of CTLA-4.
Royalties, if any, will be payable on a country-by-country and product-by-product basis until the latest of (i) the tenth anniversary of the first commercial sale of such product in such country, (ii) the expiration of the last-to-expire of certain specified patents that cover such product's composition of matter or method of use as sold in such country or (iii) the expiration of regulatory exclusivity for such product in such country. 117 Table of Contents The Sanofi Agreement will expire upon the termination of all royalty obligations.
Royalties, if any, will be payable on a country-by-country and product-by-product basis until the latest of (i) the tenth anniversary of the first commercial sale of such product in such country, (ii) the expiration of the last-to-expire of certain specified patents that cover such product’s composition of matter or method of use as sold in such country or (iii) the expiration of regulatory exclusivity for such product in such country. 109 Table of Contents The Sanofi Agreement will expire upon the termination of all royalty obligations.
Other PRC Government Regulations Regulations on Intellectual Property Rights In terms of international conventions, China has entered into (including but not limited to) the Agreement on Trade-Related Aspects of Intellectual Property Rights, the Paris Convention for the Protection of Industrial Property, the Madrid Agreement Concerning the International Registration of Marks and the Patent Cooperation Treaty. 144 Table of Contents Patents According to the Patent Law of the PRC, which was promulgated by the Standing Committee of the NPC in March 1984, amended in September 1992, August 2000, December 2008 and October 2020, and came into effect in June 2021, and the Implementation Rules of the Patent Law of the PRC, which was promulgated by the State Council in June 2001 and amended in December 2002 and January 2010, there are three types of patents in the PRC: invention patents, utility model patents and design patents.
Other PRC Government Regulations Regulations on Intellectual Property Rights In terms of international conventions, China has entered into (including but not limited to) the Agreement on Trade-Related Aspects of Intellectual Property Rights, the Paris Convention for the Protection of Industrial Property, the Madrid Agreement Concerning the International Registration of Marks and the Patent Cooperation Treaty. 135 Table of Contents Patents According to the Patent Law of the PRC, which was promulgated by the Standing Committee of the NPC in March 1984, amended in September 1992, August 2000, December 2008 and October 2020, and came into effect in June 2021, and the Implementation Rules of the Patent Law of the PRC, which was promulgated by the State Council in June 2001 and amended in December 2002, January 2010 and December 2023, there are three types of patents in the PRC: invention patents, utility model patents and design patents.
For investigational products developed for oncology indications, the Phase I trials are normally conducted in patients with serious or life-threatening diseases without other treatment alternatives. 128 Table of Contents ● Phase II—The investigational product is administered to a limited patient population with a specified disease or condition to evaluate the preliminary efficacy, optimal dosages and dosing schedule and to identify possible adverse side effects and safety risks.
For investigational products developed for oncology indications, the Phase I trials are normally conducted in patients with serious or life-threatening diseases without other treatment alternatives. 119 Table of Contents ● Phase II—The investigational product is administered to a limited patient population with a specified disease or condition to evaluate the preliminary efficacy, optimal dosages and dosing schedule and to identify possible adverse side effects and safety risks.
Since January 1, 2020, for foreign investors carrying out investment activities directly or indirectly in China, the foreign investors or foreign-invested enterprises shall submit investment information to the relevant commerce administrative authorities according to the Measure on Reporting of Foreign Investment Information. 136 Table of Contents Regulation on Pharmaceutical Product Development, Approval and Registration Drug Regulatory Regime The Drug Administration Law of the PRC, or the Drug Administration Law, was promulgated by the Standing Committee of the NPC, in September 1984.
Since January 1, 2020, for foreign investors carrying out investment activities directly or indirectly in China, the foreign investors or foreign-invested enterprises shall submit investment information to the relevant commerce administrative authorities according to the Measure on Reporting of Foreign Investment Information. 127 Table of Contents Regulation on Pharmaceutical Product Development, Approval and Registration Drug Regulatory Regime The Drug Administration Law of the PRC, or the Drug Administration Law, was promulgated by the Standing Committee of the NPC, in September 1984.
The delisting of the ADSs, or the threat of them being delisted, may materially and adversely affect the value of your investment.” 83 Table of Contents Cybersecurity Review Measures On December 28, 2021, the Cyberspace Administration of China, or the CAC, and 12 other relevant PRC government authorities published the amended Cybersecurity Review Measures, or the Cybersecurity Review Measures, which went on February 15, 2022 and supersede and replace the current Cybersecurity Review Measures previously promulgated on April 13, 2020.
The delisting of the ADSs, or the threat of them being delisted, may materially and adversely affect the value of your investment.” 82 Table of Contents Cybersecurity Review Measures On December 28, 2021, the Cyberspace Administration of China, or the CAC, and 12 other relevant PRC government authorities published the amended Cybersecurity Review Measures, or the Cybersecurity Review Measures, which went on February 15, 2022 and supersede and replace the current Cybersecurity Review Measures previously promulgated on April 13, 2020.
Under terms of the agreement, Merck provides pembrolizumab and input on our clinical trials evaluating pembrolizumab in combination with ADG116 and ADG126, respectively. 116 Table of Contents TECHNOLOGY COLLABORATIONS WITH BIOPHARMACEUTICAL COMPANIES We enter into collaborations with biotechnology and pharmaceutical companies to leverage the power of our technology platforms, creating a network of potential future revenue streams that complements future long-term value from our wholly-owned pipeline.
Under terms of the agreement, Merck provides pembrolizumab and input on our clinical trials evaluating pembrolizumab in combination with ADG126 and ADG116, respectively. 108 Table of Contents TECHNOLOGY COLLABORATIONS WITH BIOPHARMACEUTICAL COMPANIES We enter into collaborations with biotechnology and pharmaceutical companies to leverage the power of our technology platforms, creating a network of potential future revenue streams that complements future long-term value from our wholly-owned pipeline.
The robust CMC attributes of our DPL library are designed to also eliminate the requirement to optimize antibody sequences before starting CMC process for IND enabling and formulation studies.
The robust CMC attributes of our DPL are designed to also eliminate the requirement to optimize antibody sequences before starting CMC process for IND enabling and formulation studies.
Such approval process has been further enacted into the 2019 Amendment. 139 Table of Contents Trial Exemptions and Acceptance of Foreign Data The NMPA issued the Technical Guidance Principles on Accepting Foreign Drug Clinical Trial Data in July 2018, as one of the implementing rules for the Innovation Opinions, which provides that overseas clinical data can be submitted for the drug registration applications in China.
Such approval process has been further enacted into the 2019 Amendment. 130 Table of Contents Trial Exemptions and Acceptance of Foreign Data The NMPA issued the Technical Guidance Principles on Accepting Foreign Drug Clinical Trial Data in July 2018, as one of the implementing rules for the Innovation Opinions, which provides that overseas clinical data can be submitted for the drug registration applications in China.
The Bio-security Law of the PRC further stipulates that the department of science and technology under the State Council shall be the competent authority for the approval or filing of using China’s human genetic resources. 143 Table of Contents Regulations on Drug Manufacturing and Distribution Drug Manufacturing According to the Drug Administration Law and the Implementing Regulations of the Drug Administration Law, a drug manufacturing enterprise is required to obtain a drug manufacturing license from the relevant provincial drug administration authority of the PRC.
The Bio-security Law of the PRC further stipulates that the department of science and technology under the State Council shall be the competent authority for the approval or filing of using China’s human genetic resources. 134 Table of Contents Regulations on Drug Manufacturing and Distribution Drug Manufacturing According to the Drug Administration Law and the Implementing Regulations of the Drug Administration Law, a drug manufacturing enterprise is required to obtain a drug manufacturing license from the relevant provincial drug administration authority of the PRC.
Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors. 126 Table of Contents MATERIAL LICENSES AND APPROVALS The following table sets forth a list of material licenses and approvals, subject to further renewal, that our PRC subsidiary is required to obtain to carry out our operations in China.
Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors. 117 Table of Contents MATERIAL LICENSES AND APPROVALS The following table sets forth a list of material licenses and approvals, subject to further renewal, that our PRC subsidiary is required to obtain to carry out our operations in China.
Notwithstanding the submission of any requested additional information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for approval. 129 Table of Contents After the FDA evaluates a BLA and conducts inspections of manufacturing facilities where the commercial product and/or its drug substance will be produced, the FDA may issue an approval letter or a Complete Response letter.
Notwithstanding the submission of any requested additional information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for approval. 120 Table of Contents After the FDA evaluates a BLA and conducts inspections of manufacturing facilities where the commercial product and/or its drug substance will be produced, the FDA may issue an approval letter or a Complete Response letter.
For the details of the risks associated with the enactment of the HFCA Act, see “Item 3. Key Information––3.D. Risk Factors––Risks Related to Doing Business in the PRC––Our ADSs may be prohibited from trading in the United States under the HFCAA in the future if the PCAOB is unable to inspect or investigate completely auditors located in China.
For the details of the risks associated with the enactment of the HFCAA, see “Item 3. Key Information––3.D. Risk Factors––Risks Related to Doing Business in the PRC––Our ADSs may be prohibited from trading in the United States under the HFCAA in the future if the PCAOB is unable to inspect or investigate completely auditors located in China.
Our competitors also may obtain FDA or other regulatory approval for their products more rapidly than we do. 125 Table of Contents We compete in the segments of the pharmaceutical, biotechnology and other related markets that develop cancer treatments. There are many other companies that have commercialized and/or are developing immuno-oncology treatments for cancer, including large pharmaceutical and biotechnology companies.
Our competitors also may obtain FDA or other regulatory approval for their products more rapidly than we do. 116 Table of Contents We compete in the segments of the pharmaceutical, biotechnology and other related markets that develop cancer treatments. There are many other companies that have commercialized and/or are developing immuno-oncology treatments for cancer, including large pharmaceutical and biotechnology companies.
If any patents issue from our pending patent applications, excluding any patent term adjustments and patent term extension, such patents will be expected to expire from 2033 to 2043. If any patents issue from our pending patent applications, excluding any patent term adjustments and patent term extension, such patents will be expected to expire from 2033 to 2042.
If any patents issue from our pending patent applications, excluding any patent term adjustments and patent term extension, such patents will be expected to expire from 2033 to 2043.
Clinical development of this candidate is ongoing. 120 Table of Contents 2019 Collaboration Agreements In May 2019, we entered into (i) a collaboration agreement that covers Greater China (the “Dragon Boat Greater China Agreement”) and (ii) a collaboration agreement that covers the regions other than Greater China (the “Dragon Boat ROW Agreement,” together with the Dragon Boat Greater China Agreement, the “2019 Dragon Boat Agreements”), with Dragon Boat Biopharmaceutical (Shanghai) Limited.
Clinical development of this candidate is ongoing. 111 Table of Contents 2019 Collaboration Agreements In May 2019, we entered into (i) a collaboration agreement that covers Greater China (the “Dragon Boat Greater China Agreement”) and (ii) a collaboration agreement that covers the regions other than Greater China (the “Dragon Boat ROW Agreement,” together with the Dragon Boat Greater China Agreement, the “2019 Dragon Boat Agreements”), with Dragon Boat Biopharmaceutical (Shanghai) Limited.
Social Insurance and Housing Provident Funds According to the Social Insurance Law of PRC, which was promulgated by the Standing Committee of the NPC in October 2010 and came into effect in July 2011, and further amended in December 2018, and the Interim Regulations on the Collection and Payment of Social Security Funds, which was promulgated by the State Council in January 1999 and amended in March 2019, and the Regulations on the Administration of Housing Provident Funds, which was promulgated by the State 152 Table of Contents Council in April 1999 and amended in March 2002 and March 2019, employers are required to contribute, on behalf of their employees, to a number of social security funds, including funds for basic pension insurance, unemployment insurance, basic medical insurance, occupational injury insurance, maternity insurance and to housing provident funds.
Social Insurance and Housing Provident Funds According to the Social Insurance Law of PRC, which was promulgated by the Standing Committee of the NPC in October 2010 and came into effect in July 2011, and further amended in December 2018, and the Interim Regulations on the Collection and Payment of Social Security Funds, which was promulgated by the State Council in January 1999 and amended in March 2019, and the Regulations on the Administration of Housing Provident Funds, which was promulgated by the State Council in April 1999 and amended in March 2002 and March 2019, employers are required to contribute, on behalf of their employees, to a number of social security funds, including funds for basic pension insurance, unemployment insurance, basic medical insurance, occupational injury insurance, maternity insurance and to housing provident funds.
If the PCAOB determines in the future that it no longer has full access to inspect and investigate accounting firms headquartered in mainland China and Hong Kong and we continue to use such accounting firm to conduct audit work, we would be identified as a “Commission-Identified Issuer” under the HFCA Act following the filing of the annual report for the relevant fiscal year, and if we were so identified for two consecutive years, trading in our securities on U.S. markets would be prohibited.
If the PCAOB determines in the future that it no longer has full access to inspect and investigate accounting firms headquartered in mainland China and Hong Kong and we continue to use such accounting firm to conduct audit work, we would be identified as a “Commission-Identified Issuer” under the HFCAA following the filing of the annual report for the relevant fiscal year, and if we were so identified for two consecutive years, trading in our securities on U.S. markets would be prohibited.
By exploiting conformational diversity, we have designed and precisely constructed approximately one trillion (10 12 ) antibody sequences in our DPL. These antibodies feature broad epitope (the portion of an antigen that are recognized by an antibody) coverage and robust chemistry, manufacturing, and control, or CMC, attributes.
By exploiting conformational diversity, we have designed and precisely constructed approximately one trillion (10 12 ) antibody sequences in our DPL. These antibodies feature broad epitope (the portion of an antigen that is recognized by an antibody) coverage and robust chemistry, manufacturing, and control, or CMC, attributes.
Product Candidates Title of Patent Application Type of Patent Applications (1) Jurisdiction ADG116 Anti-CTLA4 antibodies and methods of making and using the same Composition of matter/ method of use/ method of making United States of America, China and European Patent Office ADG126 Anti-CTLA4 antibodies and methods of making and using the same Composition of matter/ method of use/ method of making United States of America, China and European Patent Office ADG106 Anti-CD137 molecules and uses thereof Combination therapy comprising anti-CD137 antibodies Composition of matter/ method of use/ method of making method of treatment/ method of use United States of America China and European Patent Office ADG206 Anti-CD137 antibodies and methods of making and using the same Composition of matter/method of use/method of making Patent Cooperation Treaty (2) ADG104 Anti-PD-L1 antibodies and use thereof Composition of matter/ method of use/ method of making United States of America and European Patent Office ADG125 Anti-CSF1R molecules and use thereof Composition of matter/method of use/method of making United States of America and European Patent Office (1) You should read the Risk Factors included elsewhere in this annual report for important information about risks posed by the loss of patent protection, in particular the risks described under “Item 3 Key Information—3.D.Risk Factors—Risks Related to Our Intellectual Property.” (2) Patent Application of ADG125 has not yet entered into national phase of Patent Cooperation Treaty. 123 Table of Contents The following table summarizes material issued patents in Europe and China covering our proprietary technologies and product candidates. Application No.
Product Candidates Title of Patent Application Type of Patent Applications (1) Jurisdiction ADG126 Anti-CTLA-4 antibodies and methods of making and using the same Composition of matter/ method of use/ method of making United States of America, China and European Patent Office ADG116 Anti-CTLA-4 antibodies and methods of making and using the same Composition of matter/ method of use/ method of making United States of America, China and European Patent Office ADG206 Anti-CD137 antibodies and methods of making and using the same Composition of matter/method of use/method of making Patent Cooperation Treaty (2) ADG106 Anti-CD137 molecules and uses thereof Combination therapy comprising anti-CD137 antibodies Composition of matter/ method of use/ method of making method of treatment/ method of use United States of America China and European Patent Office ADG104 Anti-PD-L1 antibodies and use thereof Composition of matter/ method of use/ method of making United States of America and European Patent Office ADG125 Anti-CSF1R molecules and use thereof Composition of matter/method of use/method of making United States of America and European Patent Office (1) You should read the Risk Factors included elsewhere in this annual report for important information about risks posed by the loss of patent protection, in particular the risks described under “Item 3 Key Information—3.D.Risk Factors—Risks Related to Our Intellectual Property.” (2) Patent Application of ADG206 has not yet entered into national phase of Patent Cooperation Treaty. 114 Table of Contents The following table summarizes material issued patents in the United States, Europe and China covering our proprietary technologies and product candidates. Application No.
For the avoidance of doubt, as of the date of this annual report, the CD28 T-cell engagers have not entered into IND-enabling stage. 110 Table of Contents OUR PLATFORM Overview Our proprietary DPL platform is built upon our insights into precise and dynamic antibody-antigen interaction.
For the avoidance of doubt, as of the date of this annual report, the CD28 T-cell engagers have not entered into IND-enabling stage. 106 Table of Contents OUR PLATFORM Overview Our proprietary DPL platform is built upon our insights into precise and dynamic antibody-antigen interaction.
Detailed implementation rules for drug classification and requirements for corresponding application materials will be promulgated by the NMPA. 138 Table of Contents In March 2016, the CFDA issued the Reform Plan for Registration Category of Chemical Medicine, which outlined the reclassifications of drug applications under the Registration Measures.
Detailed implementation rules for drug classification and requirements for corresponding application materials will be promulgated by the NMPA. 129 Table of Contents In March 2016, the CFDA issued the Reform Plan for Registration Category of Chemical Medicine, which outlined the reclassifications of drug applications under the Registration Measures.
Our patents and patent applications cover our key technologies and product candidates, including the DPL platform, our clinical candidates, ADG116, ADG126, ADG106, ADG206 and our preclinical candidates including ADG153, ADG138 and ADG152. Excluding any patent term adjustment and patent term extension, our currently issued patents are expected to expire from 2033 to 2038.
Our patents and patent applications cover our key technologies and product candidates, including the DPL platform, our clinical candidates, ADG126, ADG116, ADG206, ADG106 and our preclinical candidates including ADG153, ADG138 and ADG152. Excluding any patent term adjustment and patent term extension, our currently issued patents are expected to expire from 2033 to 2039.
Pilot Plan for the MAH System The Innovation Opinions provide a pilot plan for the MAH system. 141 Table of Contents Under the authorization of the Standing Committee of the NPC, the General Office of the State Council issued the Pilot Plan for the Drug Marketing Authorization Holder Mechanism in May 2016, which provides a detailed pilot plan for the MAH system in 10 Chinese provinces.
Pilot Plan for the MAH System The Innovation Opinions provide a pilot plan for the MAH system. 132 Table of Contents Under the authorization of the Standing Committee of the NPC, the General Office of the State Council issued the Pilot Plan for the Drug Marketing Authorization Holder Mechanism in May 2016, which provides a detailed pilot plan for the MAH system in 10 Chinese provinces.
Title of Patent Type of Patent (1) Jurisdiction 13877452.6 An Integrated System for Library Construction, Affinity Binder Screening and Expression Thereof Method European Patent Office 201380074656.1 An Integrated System for Library Construction, Affinity Binder Screening and Expression Thereof Method China 14908246.3 Methods and Systems for Autoinduction of Protein Expression Method European Patent Office 201410789857.6 Filter Vector System And Its Applications Method China 16108018 Anti-CD137 Molecules and Use Thereof Composition of matter United States of America 15536939 Methods and Systems for Autoinduction of Protein Expression Method United States of America 201480084652.6 Methods and Systems for Autoinduction of Protein Expression Method China 16640673 Dynamic Human Antibody Light Chain Libraries Library United States of America 16640679 Dynamic Human Heavy Chain Antibody Libraries Library United States of America 16265946 Anti-CTLA4 Antibodies And Methods of Making and Using the Same Composition of matter United States of America (1) You should read the Risk Factors included elsewhere in this annual report for important information about risks posed by the loss of patent protection, in particular the risks described under “Item 3 Key Information—3.D.Risk Factors—Risks Related to Our Intellectual Property.” We continually assess and refine our intellectual property strategy as we develop new platform technologies and product candidates.
Title of Patent Type of Patent (1) Jurisdiction 13877452.6 An Integrated System for Library Construction, Affinity Binder Screening and Expression Thereof Method European Patent Office 201380074656.1 An Integrated System for Library Construction, Affinity Binder Screening and Expression Thereof Method China 14908246.3 Methods and Systems for Autoinduction of Protein Expression Method European Patent Office 15536939 Methods and Systems for Autoinduction of Protein Expression Method United States of America 201480084652.6 Methods and Systems for Autoinduction of Protein Expression Method China 201410789857.6 Filter Vector System And Its Applications Method China 16108018 Anti-CD137 Molecules and Use Thereof Composition of matter United States of America 16640684 Method for Treating Cancer using anti-CD137 antibody Method United States of America 16640673 Dynamic Human Antibody Light Chain Libraries Library United States of America 16640679 Dynamic Human Heavy Chain Antibody Libraries Library United States of America 16265946 Anti-CTLA-4 Antibodies And Methods of Making and Using the Same Composition of matter United States of America 16966844 Anti-CTLA4 Antibodies And Methods of Making and Using the Same Composition of matter United States of America (1) You should read the Risk Factors included elsewhere in this annual report for important information about risks posed by the loss of patent protection, in particular the risks described under “Item 3 Key Information—3.D.Risk Factors—Risks Related to Our Intellectual Property.” We continually assess and refine our intellectual property strategy as we develop new platform technologies and product candidates.
We have entered into a framework agreement with Wuxi Biologics, under which it provides services to us on a project-by-project basis. Adagene is also working with other qualified manufacturers to diversify manufacturing outsourcing for the clinical supply production.
We have entered into a framework agreement with Wuxi Biologics, under which it provides services to us on a project-by-project basis. Adagene is also working with other qualified manufacturers to optimize manufacturing outsourcing for the clinical supply production.
We have persistently and pursued and implements seamless translational studies using the epitope across different species for both programs, observing a good correlation between preclinical and clinical results both as single agents and in combination with anti-PD-1.
We have persistently pursued and implemented seamless translational studies using the epitope across different species for both programs, observing a good correlation between preclinical and clinical results both as single agents and in combination with anti-PD-1.
The abundant discovery hits with diversified binding epitopes for varying degree of species cross-reactivity show the power of our AI-powered DPL platform not only in creating novel NEObodies in targeting different epitopes of a given antigen, but also in targeting the conserved epitope across different species of a given antigen to enable translational studies from immune-competent animal tumor models to human patients due to their broad species cross-reactivities.
The abundant discovery hits with diversified binding epitopes for varying degree of species cross-reactivity show the power of our DPL not only in creating novel NEObodies in targeting different epitopes of a given antigen, but also in targeting the conserved epitope across different species of a given antigen to enable translational studies from immune-competent animal tumor models to human patients due to their broad species cross-reactivities.
It is currently under Phase 1b/2 clinical evaluation in multiple trials in the U.S., China and APAC, both as monotherapy and in combination with anti-PD-1 therapy. 99 Table of Contents ADG126 is designed to address the toxicity issues of the approved CTLA-4 immuno-oncology therapy and achieve enhance anti-tumor efficacy to expand the potential of CTLA-4 as a target for the treatment of cancer.
It is currently under Phase 1b/2 clinical evaluation in multiple trials in the U.S., China and APAC, both as monotherapy and in combination with anti-PD-1 therapy. ADG126 is designed to address the toxicity issues of the approved CTLA-4 immuno-oncology therapy and achieve enhance anti-tumor efficacy to expand the potential of CTLA-4 as a target for the treatment of cancer.
It applies our proprietary SAFEbody technology to a parental antibody, ADG116, enabling ADG126 to be activated primarily in tumor tissues rather than healthy tissues, minimizing the risk of on-target, off-tumor toxicities. In September 2022, we presented the first clinical results from our monotherapy evaluation in a poster presentation at the European Society of Medical Oncology (ESMO) annual congress.
It applies our proprietary SAFEbody technology to a parental antibody, ADG116, enabling ADG126 to be activated primarily in tumor tissues rather than healthy tissues, minimizing the risk of on-target, off-tumor toxicities. 91 Table of Contents In September 2022, we presented the first clinical results from our monotherapy evaluation in a poster presentation at the European Society of Medical Oncology (ESMO) annual congress.
Risk Factors–– The enactment of the Accelerating Holding Foreign Companies Accountable Act decreases the number of non-inspection years from three years to two, thus reducing the time period before our ADSs may be prohibited from trading on the Nasdaq Stock Market or in the over-the-counter market or delisted.” 82 Table of Contents On December 16, 2021, PCAOB issued the HFCA Act Determination Report, according to which our auditor was subject to the determinations that the PCAOB is unable to inspect or investigate completely (the “2021 Determinaitons”).
Risk Factors–– The enactment of the Accelerating Holding Foreign Companies Accountable Act decreases the number of non-inspection years from three years to two, thus reducing the time period before our ADSs may be prohibited from trading on the Nasdaq Stock Market or in the over-the-counter market or delisted.” 81 Table of Contents On December 16, 2021, PCAOB issued the HFCAA Determination Report, according to which our auditor was subject to the determinations that the PCAOB is unable to inspect or investigate completely (the “2021 Determinaitons”).
These data support the mechanism of action for ADG126 as shown below in data presented at AACR 2023: ADG126 Monotherapy Tumor Biopsy: Case Study Shows Increased Teff / Treg with Treg Depletion in TME of an HCC Patient who Progressed on Atezolizumab + Bevacizumab* 101 Table of Contents * Data from paired tumor biopsies were collected before and after treatment.
These data support the mechanism of action for ADG126 as shown below in data presented at AACR 2023: ADG126 Monotherapy Tumor Biopsy: Case Study Shows Increased Teff / Treg with Treg Depletion in TME of an HCC Patient who Progressed on Atezolizumab + Bevacizumab* * Data from paired tumor biopsies were collected before and after treatment.
The PCAOB is required under the HFCA Act to make its determination on an annual basis with regards to its ability to inspect and investigate completely accounting firms based in the mainland China and Hong Kong. The possibility of being a “Commission-Identified Issuer” and risk of delisting could continue to adversely affect the trading price of our securities.
The PCAOB is required under the HFCAA to make its determination on an annual basis with regards to its ability to inspect and investigate completely accounting firms based in the mainland China and Hong Kong. The possibility of being a “Commission-Identified Issuer” and risk of delisting could continue to adversely affect the trading price of our securities.
In addition to filing and prosecuting patent applications in China and the United States, we may elect to file counterpart patent applications in additional countries and regions where we believe such foreign filing is likely to be beneficial. 124 Table of Contents As with other biotechnology and biopharmaceutical companies, our ability to maintain and solidify our proprietary and intellectual property position for our platform technologies and product candidates will depend on our success in obtaining effective patent claims and enforcing those claims if granted.
In addition to filing and prosecuting patent applications inthe United States and China, we may elect to file counterpart patent applications in additional countries and regions where we believe such foreign filing is likely to be beneficial. 115 Table of Contents As with other biotechnology and biopharmaceutical companies, our ability to maintain and solidify our proprietary and intellectual property position for our platform technologies and product candidates will depend on our success in obtaining effective patent claims and enforcing those claims if granted.
According to the Measures for the Exemption of Value-Added Tax from Cross-Border Taxable Activities in the Collection of Value-Added Tax in Lieu of Business Tax (for Trial Implementation) revised in June 2018, if domestic enterprises provide cross-border taxable activities such as professional technical services, technology transfer, software services, the above-mentioned cross-border taxable activities are exempt from VAT. 4.C.
According to the Measures for the Exemption of Value-Added Tax from Cross-Border Taxable Activities in the Collection of Value-Added Tax in Lieu of Business Tax (for Trial Implementation) revised in June 2018, if domestic enterprises provide cross-border taxable activities such as professional technical services, technology transfer, software services, the above-mentioned cross-border taxable activities are exempt from VAT. 145 Table of Contents 4.C.
Trading in our ADSs on the Nasdaq or over-the-counter will be prohibited, and as a result, our ADSs will be delisted under the HFCA Act, if the PCAOB has determined that it has been unable to inspect registered public accounting firms headquartered in mainland China and Hong Kong for two consecutive years.
Trading in our ADSs on the Nasdaq or over-the-counter will be prohibited, and as a result, our ADSs will be delisted under the HFCAA, if the PCAOB has determined that it has been unable to inspect registered public accounting firms headquartered in mainland China and Hong Kong for two consecutive years.
Our DPL platform empowers us to engage the dynamic epitope of the conformationally dynamic target which might be challenging using conventional antibody discovery approaches. We believe that the high-affinity and cross-reactive primary hits from our AI-Powered DPL library screening save time and cost from discovery to early clinical proof of concept.
Our DPL platform empowers us to engage the dynamic epitope of the conformationally dynamic target which might be challenging using conventional antibody discovery approaches. We believe that the high-affinity and cross-reactive primary hits from our DPL screening save time and cost from discovery to early clinical proof of concept.
We believe our AI-powered antibody discovery and engineering DPL platform significantly increase R&D productivity for antibody drug discovery, as illustrated by our clinical and preclinical pipeline. For example, DPL library screening against CTLA-4 or CD137 antigens has yielded a large number of high affinity primary hits.
We believe our antibody discovery and engineering DPL platform significantly increase R&D productivity for antibody drug discovery, as illustrated by our clinical and preclinical pipeline. For example, DPL screening against CTLA-4 or CD137 antigens has yielded a large number of high affinity primary hits.
Our DPL platform combines AI algorithms and ever-increasing big data in antibody sequence, structure, and binding epitope and affinity from public and our own proprietary databases to design, construct and screen high-quality proprietary antibody libraries with well-defined sequence, scaffold and biophysical attributes for antibody drug discovery.
Our DPL platform combines computational biology, algorithms and ever-increasing big data in antibody sequence, structure, binding epitope and affinity from public and our own proprietary databases to design, construct and screen high-quality proprietary antibody libraries with well-defined sequence, scaffold and biophysical attributes for antibody drug discovery.
The SEC maintains an internet site at www.sec.gov that contains reports, information statements, and other information regarding issuers that file electronically with the SEC. Recent Regulatory Development Implication of the Holding Foreign Companies Accountable Act The Holding Foreign Companies Accountable Act (the “HFCA Act”), was enacted on December 18, 2020.
The SEC maintains an internet site at www.sec.gov that contains reports, information statements, and other information regarding issuers that file electronically with the SEC. Recent Regulatory Development Implication of the Holding Foreign Companies Accountable Act The Holding Foreign Companies Accountable Act (the “HFCAA”), was enacted on December 18, 2020.
ADG153 is currently in the IND-enabling phase. ● ADG138 : This novel HER2xCD3 POWERbody is masked on both arms with an impressively high therapeutic index relative to its parental non-masked TCE in both HER2 high and low expressing solid tumors including HER2 high resistant/refractory tumors relative to a benchmark antibody (DS-8201, a HER2 targeting antibody drug conjugate commercially available in specific indications).
ADG153 is currently IND-ready. ● ADG138 : This novel HER2xCD3 POWERbody is masked on both arms with an impressively high therapeutic index relative to its parental non-masked TCE in both HER2 high and low expressing solid tumors including HER2 high resistant/refractory tumors relative to a benchmark antibody (DS-8201, a HER2 targeting antibody drug conjugate commercially available in specific indications).
As of the date of this annual report, we have received approximately US$1.5 million and US$1.2 million in aggregate payments under the 2018 Sanjin Agreements and the 2019 Dragon Boat Agreements, respectively. 121 Table of Contents Additional Discovery AGREEMENTs In addition to our SAFEbody technology licensing collaborations and out-licensing collaborations, from time to time, we further enhance our discovery efforts to leverage our DPL platform and antibody engineering capabilities with other biotechnology and pharmaceutical companies.
As of the date of this annual report and since the date of respective agreement, we have received approximately US$1.5 million and US$1.2 million in aggregate payments under the 2018 Sanjin Agreements and the 2019 Dragon Boat Agreements, respectively. 112 Table of Contents Additional Discovery AGREEMENTs In addition to our SAFEbody technology licensing collaborations and out-licensing collaborations, from time to time, we further enhance our discovery efforts to leverage our DPL platform and antibody engineering capabilities with other biotechnology and pharmaceutical companies.
There were no intercompany loans provided by Adagene Inc. to Adagene Suzhou during the years ended and as of December 31, 2020, 2021 and 2022.
There were no intercompany loans provided by Adagene Inc. to Adagene Suzhou during the years ended and as of December 31, 2021, 2022 and 2023.
This analysis suggests prolonged exposures of activated ADG126 in the tumor microenvironment (TME), with cleaved ADG126 on average accumulating ≥3-fold during repeat dosing, associated with the longer half-life of total ADG126 compared with its parental antibody.
This analysis suggests prolonged exposures of activated ADG126 in the tumor microenvironment (TME), with cleaved ADG126 on average accumulating ≥3-fold during repeat dosing, associated with the longer half-life of total ADG126 and its preferential accumulation in TME compared with its parental antibody.
Our DPL platform is empowered by our computational platform, artificial intelligence and three innovative technologies: NEObody, SAFEbody, and POWERbody. Life is motion : Harnessing the Dynamic Power of Antibodies The motion of proteins and their dynamic interactions trigger a cascade of complex biological and pharmacological effects.
Our DPL platform is empowered by computational biology and three innovative technologies: NEObody, SAFEbody, and POWERbody. Life is motion : Harnessing the Dynamic Power of Antibodies The motion of proteins and their dynamic interactions trigger a cascade of complex biological and pharmacological effects.
Further, analysis of a clinical sample from a hepatocellular carcinoma (HCC) patient previously treated with atezolizumab and bevacizumab and then followed by lenvatinib demonstrated about nine-fold Teff/Treg improved ratio after dosing relative to before dosing due to reduction in Treg and improvement in T effect cells.
Analysis of a clinical sample from a hepatocellular carcinoma (HCC) patient previously treated with atezolizumab and bevacizumab and then followed by lenvatinib demonstrated about nine-fold Teff/Treg improved ratio after dosing relative to before dosing due to reduction in Tregs and improvement in T effector cells.
ADG138 is currently in the IND-enabling phase. ● ADG152: This CD20xCD3 POWERbody integrates the company’s proprietary bispecific TCE platform with SAFEbody precision masking technology to minimize cytokine release syndrome (CRS) and on-target off-tumor toxicities for an increased therapeutic index.
ADG138 is currently IND-ready. ● ADG152 : This CD20xCD3 POWERbody integrates the company’s proprietary bispecific TCE platform with SAFEbody precision masking technology to minimize cytokine release syndrome (CRS) and on-target off-tumor toxicities for an increased therapeutic index.
ADG126/ADG116 is designed to target CTLA-4 conserved epitope with species cross-reactivity for translational fidelity. 103 Table of Contents Moreover, ADG126 has been observed in preclinical animal studies to mediate effector functions to eliminate highly upregulated CTLA-4 expressing cells, particularly regulatory T-cells in the TME, primarily through its strong ADCC.
ADG126/ADG116 is designed to target CTLA-4 a unique and conserved epitope with species cross-reactivity for translational fidelity. 97 Table of Contents Moreover, ADG126 has been observed in preclinical animal studies to mediate effector functions to eliminate highly upregulated CTLA-4 expressing cells, particularly regulatory T-cells in the TME, primarily through its strong ADCC.
Other than the above disclosed transfer of funds, we did not transfer any type of assets between Adagene Suzhou and other Adagene subsidiaries in 2020, 2021 and 2022. 86 Table of Contents Restrictions on Foreign Exchange and the Ability to Transfer Cash between Entities, Across Borders and to U.S.
Other than the above disclosed transfer of funds, we did not transfer any type of assets between Adagene Suzhou and other Adagene subsidiaries in 2021, 2022 and 2023. 85 Table of Contents Restrictions on Foreign Exchange and the Ability to Transfer Cash between Entities, Across Borders and to U.S.