Biggest changeAt this stage, however, we cannot be certain whether we will be permitted to move from a Phase 1 trial directly to a pivotal trial until FDA reviews and concurs with or rejects our proposed plans, and FDA may require us to conduct further trials to generate additional safety and efficacy data.
Biggest changeAt this stage, however, we cannot be certain whether we will be permitted to move from a Phase 1 trial directly to a pivotal trial until FDA reviews and concurs with or rejects our proposed plans, and FDA may require us to conduct further trials to generate additional safety and efficacy data. 19 As development of TVGN 489 continues, we may also seek FDA’s RMAT designation for TVGN 489, which as explained in “Regulatory Environment - Expedited Development and Review Programs” below, is intended to facilitate efficient development and expedited review or potentially, the FDA Commissioner’s National Priority Voucher pilot program, which the FDA is exploring as a pathway to reduce review times, even as compared to other priority review programs, for candidates meeting certain criteria.
These actions could include the suspension or termination of clinical trials by FDA, FDA’s refusal to approve pending applications or supplemental applications, suspension or withdrawal of an approval, issuance of warning or untitled letters, product recalls, product seizures, total or partial suspension of production or distribution, import detention, injunctions, fines, refusals of government contracts, restitution, disgorgement of profits, or civil or criminal investigations and penalties brought by FDA, the Department of Justice (“DOJ”), and other governmental entities. 25 An applicant seeking approval to market and distribute a biologic in the United States must typically undertake the following: ● completion of non-clinical laboratory tests and studies performed in accordance with FDA’s Good Laboratory Practice (“GLP”) regulations; ● manufacture, labeling and distribution of investigational drugs in compliance with FDA’s current Good Manufacturing Practice (“cGMP”) requirements; ● submission to FDA of an Investigational New Drug application (“IND”), which must become effective before clinical trials may begin and must be updated annually and when significant changes are made; ● approval by an Investigational Review Board (“IRB”) for each clinical site before each clinical trial may be initiated; ● performance of adequate and well-controlled human clinical trials in accordance with FDA’s Good Clinical Practice (“GCP”) requirements to establish the safety, purity, and potency of the proposed biological product candidate for its intended purpose; ● after completion of all pivotal clinical trials, preparation of and submission to FDA of a Biologics License Application (“BLA”) requesting marketing approval, which includes providing sufficient evidence to establish the efficacy, safety, purity, and potency of the proposed biological product for its intended use, including from results of nonclinical testing and clinical trials; ● satisfactory completion of an FDA advisory committee review, when appropriate, as may be requested by FDA to assist with its review; ● satisfactory completion of one or more FDA inspections of the manufacturing facility or facilities at which the proposed product, or certain components thereof, are produced to assess compliance with cGMP and data integrity requirements to assure that the facilities, methods, and controls are adequate to preserve the biological product’s identity, strength, quality, and purity and, if applicable, FDA’s Good Tissue practice (“GTP”) requirements for certain human cellular and tissue products; ● satisfactory completion of FDA inspections of selected clinical investigation sites to assure compliance with GCP requirements and the integrity of the clinical data; ● satisfactory completion of an FDA sponsor GCP inspection, often conducted at the applicant’s headquarters facility; ● payment of user fees (unless there is a waiver, exemption, or reduction) under the Prescription Drug User Fee Act (“PDUFA”) for the relevant year; ● FDA’s review and approval of the BLA to permit commercial marketing of the licensed biologic for particular indications for use in the United States; and ● compliance with post-approval requirements, including the potential requirements to implement a Risk Evaluation and Mitigation Strategies (“REMS”), to report adverse events and biological product deviations, and to complete any post-approval studies such as confirmatory trials or pediatric studies.
These actions could include the suspension or termination of clinical trials by FDA, FDA’s refusal to approve pending applications or supplemental applications, suspension or withdrawal of an approval, issuance of warning or untitled letters, product recalls, product seizures, total or partial suspension of production or distribution, import detention, injunctions, fines, refusals of government contracts, restitution, disgorgement of profits, or civil or criminal investigations and penalties brought by FDA, the Department of Justice (“DOJ”), and other governmental entities. 26 An applicant seeking approval to market and distribute a biologic in the United States must typically undertake the following: ● completion of non-clinical laboratory tests and studies performed in accordance with FDA’s Good Laboratory Practice (“GLP”) regulations; ● manufacture, labeling and distribution of investigational drugs in compliance with FDA’s current Good Manufacturing Practice (“cGMP”) requirements; ● submission to FDA of an Investigational New Drug application (“IND”), which must become effective before clinical trials may begin and must be updated annually and when significant changes are made; ● approval by an Investigational Review Board (“IRB”) for each clinical site before each clinical trial may be initiated; ● performance of adequate and well-controlled human clinical trials in accordance with FDA’s Good Clinical Practice (“GCP”) requirements to establish the safety, purity, and potency of the proposed biological product candidate for its intended purpose; ● after completion of all pivotal clinical trials, preparation of and submission to FDA of a Biologics License Application (“BLA”) requesting marketing approval, which includes providing sufficient evidence to establish the efficacy, safety, purity, and potency of the proposed biological product for its intended use, including from results of nonclinical testing and clinical trials; ● satisfactory completion of an FDA advisory committee review, when appropriate, as may be requested by FDA to assist with its review; ● satisfactory completion of one or more FDA inspections of the manufacturing facility or facilities at which the proposed product, or certain components thereof, are produced to assess compliance with cGMP and data integrity requirements to assure that the facilities, methods, and controls are adequate to preserve the biological product’s identity, strength, quality, and purity and, if applicable, FDA’s Good Tissue practice (“GTP”) requirements for certain human cellular and tissue products; ● satisfactory completion of FDA inspections of selected clinical investigation sites to assure compliance with GCP requirements and the integrity of the clinical data; ● satisfactory completion of an FDA sponsor GCP inspection, often conducted at the applicant’s headquarters facility; ● payment of user fees (unless there is a waiver, exemption, or reduction) under the Prescription Drug User Fee Act (“PDUFA”) for the relevant year; ● FDA’s review and approval of the BLA to permit commercial marketing of the licensed biologic for particular indications for use in the United States; and ● compliance with post-approval requirements, including the potential requirements to implement a Risk Evaluation and Mitigation Strategies (“REMS”), to report adverse events and biological product deviations, and to complete any post-approval studies such as confirmatory trials or pediatric studies.
T-cells, in contrast, recognize small peptide breakdown products of proteins and are only affected if the mutation is directly within the target peptide. More broadly, known companies developing virus-specific T cell therapies include Atara Biotherapeutics (“Atara Bio”), whose Ebvallo (tabelecleucel) has received approval in Europe for treating a rare hematologic cancer caused by EBV. AlloVir, Inc.
T-cells, in contrast, recognize small peptide breakdown products of proteins and are only affected if the mutation is directly within the target peptide. More broadly, known companies developing virus-specific T cell therapies include Atara Biotherapeutics, Inc. (“Atara Bio”), whose Ebvallo (tabelecleucel) has received approval in Europe for treating a rare hematologic cancer caused by EBV.
TVGN 489 cells are derived from healthy donors who recovered from a prior COVID-19 infection, and TVGN 489 is active against multiple, precise targets spread across the SARS-CoV-2 genome. 11 In January 2023, we completed a Phase 1 proof-of-concept trial of TVGN 489 for the treatment of ambulatory high-risk adult COVID-19 patients.
TVGN 489 cells are derived from healthy donors who recovered from a prior COVID-19 infection, and TVGN 489 is active against multiple, precise targets spread across the SARS-CoV-2 genome. In January 2023, we completed a Phase 1 proof-of-concept trial of TVGN 489 for the treatment of ambulatory high-risk adult COVID-19 patients.
Our efforts to develop manufacturing capability are currently focused on finding a manufacturing and research and development facility, including through collaboration with a potential facility development partner. 20 Our Commercialization Plans If approved, we plan to globally commercialize TVGN 489 and our other product candidates aimed at serving a large patient population suffering from infectious diseases, cancer, and other disorders.
Our efforts to develop manufacturing capability are currently focused on finding a manufacturing and research and development facility, including through collaboration with a potential facility development partner. Our Commercialization Plans If approved, we plan to globally commercialize TVGN 489 and our other product candidates aimed at serving a large patient population suffering from infectious diseases, cancer, and other disorders.
FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions and usually has followed such recommendations. 29 After FDA evaluates a BLA and conducts inspections of manufacturing facilities where the investigational product and/or its components will be produced, FDA may issue an approval letter or a Complete Response Letter (“CRL”).
FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions and usually has followed such recommendations. After FDA evaluates a BLA and conducts inspections of manufacturing facilities where the investigational product and/or its components will be produced, FDA may issue an approval letter or a Complete Response Letter (“CRL”).
Adequate third-party reimbursement may not be available to enable us to maintain price levels sufficient to realize an appropriate return on our investment in product development. 33 The marketability of any product candidates for which we receive regulatory approval for commercial sale may suffer if the government and third-party payors fail to provide adequate coverage and reimbursement.
Adequate third-party reimbursement may not be available to enable us to maintain price levels sufficient to realize an appropriate return on our investment in product development. The marketability of any product candidates for which we receive regulatory approval for commercial sale may suffer if the government and third-party payors fail to provide adequate coverage and reimbursement.
Secondary endpoints showed a rapid reduction of viral load and that infusion of TVGN 489 did not prevent the development of the patients’ own T cell-related (cellular) or antibody-related (humoral) anti-COVID-19 immunity. None of the patients reported progression of infection, reinfection, or the development of Long COVID during the six-month follow-up period.
Secondary endpoints showed a rapid reduction of viral load and that infusion of TVGN 489 did not prevent the development of the patients’ own T cell-related (cellular) or antibody-related (humoral) anti-COVID-19 immunity. None of the treated patients reported progression of infection, reinfection, or the development of Long COVID during the six-month follow-up period.
However, making these types of changes to TVGN 489 may require additional regulatory approvals, and there is no guarantee that we will receive such approvals. 14 TVGN 489 is also designed to be fast acting, as the cells are fully mature and crafted to be primed to act as soon as they find their way to infected cells.
However, making these types of changes to TVGN 489 may require additional regulatory approvals, and there is no guarantee that we will receive such approvals. TVGN 489 is also designed to be fast acting, as the cells are fully mature and crafted to be primed to act as soon as they find their way to infected cells.
These clinical observations were mirrored by laboratory evidence of the persistence of infused TVGN 489 cells for at least six months after treatment. 17 Persistence of infused therapeutic cells remains a significant issue in the T cell therapy space, leading to challenges in controlling viral infections, preventing viral recurrence, and managing cancer relapse.
These clinical observations were mirrored by laboratory evidence of the persistence of infused TVGN 489 cells for at least six months after treatment. Persistence of infused therapeutic cells remains a significant issue in the T cell therapy space, leading to challenges in controlling viral infections, preventing viral recurrence, and managing cancer relapse.
Saadi has also served as a Voting Member of the CMS Medicare Evidence Development & Coverage Advisory Committee, which provides independent guidance and expert advice to CMS on clinical topics. Kirti Desai has served as our Chief Financial Officer since February 2024, and served as Chief Financial Officer of Tevogen Bio beginning in June 2020. Mr.
Saadi has also served as a Voting Member of the CMS Medicare Evidence Development & Coverage Advisory Committee, which provides independent guidance and expert advice to CMS on clinical topics. 38 Kirti Desai has served as our Chief Financial Officer since February 2024, and served as Chief Financial Officer of Tevogen Bio beginning in June 2020. Mr.
At the state level, legislatures have increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. 36 Privacy We may also be subject to federal, state, national and international laws and regulations governing the privacy and security of health-related and other personal data we collect and maintain (e.g., Section 5 of the Federal Trade Commission Act (the “FTC Act”), the California Consumer Privacy Act, as amended by the California Privacy Rights Act (the “CCPA”), and the European Union’s (“EU”) General Data Protection Regulation).
At the state level, legislatures have increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. 37 Privacy We may also be subject to federal, state, national and international laws and regulations governing the privacy and security of health-related and other personal data we collect and maintain (e.g., Section 5 of the Federal Trade Commission Act (the “FTC Act”), the California Consumer Privacy Act, as amended by the California Privacy Rights Act (the “CCPA”), and the European Union’s (“EU”) General Data Protection Regulation).
We expect these circumstances to continue, which could adversely impact long-term community-level protective immunity. In addition, we believe that the expiration of the U.S. federal Public Health Emergency and U.S. government funding for COVID-19 testing, and treatment could lead to higher pricing for diagnostics and therapeutics.
We expect these circumstances to continue, which could adversely impact long-term community-level protective immunity. In addition, we believe that the expiration of the U.S. federal Public Health Emergency and U.S. government funding for COVID-19 testing, surveillance, and treatment could lead to higher pricing for diagnostics and therapeutics.
Patients on the interventional arm had a higher median number of comorbid conditions, a higher incidence of immune compromise, and a higher number of patients who were unvaccinated or failed to respond to vaccination versus patients on the observational arm. 16 Each patient in the treatment arm received a single intravenous infusion of TVGN 489 within four days of diagnosis.
Patients on the interventional arm had a higher median number of comorbid conditions, a higher incidence of immune compromise, and a higher number of patients who were unvaccinated or failed to respond to vaccination versus patients on the observational arm. Each patient in the treatment arm received a single intravenous infusion of TVGN 489 within four days of diagnosis.
In other words, observations indicate that TVGN 489 did not prevent the body from responding to the infection and generating its own CTLs and antibodies to COVID-19. All treatment arm patients reported returning to their baseline level of health without COVID-19 symptoms within 14 days of treatment.
In other words, observations indicate that TVGN 489 did not prevent the body from responding to the infection and generating its own CTLs and antibodies to COVID-19. 17 All treatment arm patients reported returning to their baseline level of health without COVID-19 symptoms within 14 days of treatment.
However, we cannot be certain whether FDA will require us to conduct a separate prevention trial until FDA reviews and concurs with or rejects our proposed plans. Recent studies have indicated that there is not an HLA class I-based predisposition to Long COVID.
However, we cannot be certain whether FDA will require us to conduct a separate prevention trial until FDA reviews and concurs with or rejects our proposed plans. Studies have indicated that there is not an HLA class I-based predisposition to Long COVID.
We believe that as with other viral infections, the availability of both a preventative strategy and a treatment strategy is important to reduce incidence and impact of disease and is investigating peptide candidates for HPV to further the development of TVGN 920 and TVGN 960.
We believe that as with other viral infections, the availability of both a preventative strategy and a treatment strategy is important to reduce incidence and impact of disease and we are investigating peptide candidates for HPV to further the development of TVGN 920 and TVGN 960.
Our confidence in ExacTcell is reflected in our development pipeline, which has been carefully tailored to address the unmet needs of large patient populations grappling with life-threatening viral diseases, cancers, and other disorders.
Our confidence in ExacTcell is reflected in our development pipeline, which has been carefully tailored to address the unmet needs of patient populations grappling with life-threatening viral diseases, cancers, and other disorders.
Additionally, appropriate packaging must be selected and tested, and stability studies must be conducted to demonstrate that the drug candidate does not undergo unacceptable deterioration over its shelf life. 28 BLA Submission and Review Assuming successful completion of all required clinical testing in accordance with all applicable regulatory requirements, an applicant may submit a BLA requesting licensing to market the biologic for one or more indications in the United States.
Additionally, appropriate packaging must be selected and tested, and stability studies must be conducted to demonstrate that the drug candidate does not undergo unacceptable deterioration over its shelf life. 29 BLA Submission and Review Assuming successful completion of all required clinical testing in accordance with all applicable regulatory requirements, an applicant may submit a BLA requesting licensing to market the biologic for one or more indications in the United States.
Further, the Bipartisan Budget Act of 2018, among other things, amended the ACA to increase from 50 percent to 70 percent the point-of-sale discount that is owed by pharmaceutical manufacturers who participate in Medicare Part D to close the coverage gap in most Medicare drug plans, commonly referred to as the donut hole (this existing coverage gap program will be sunset by the Inflation Reduction Act beginning in 2025 and replaced with a new manufacturer discount program).
Further, the Bipartisan Budget Act of 2018, among other things, amended the ACA to increase from 50 percent to 70 percent the point-of-sale discount that is owed by pharmaceutical manufacturers who participate in Medicare Part D to close the coverage gap in most Medicare drug plans, commonly referred to as the donut hole (this existing coverage gap program is sunset by the Inflation Reduction Act beginning in 2025 and replaced with a new manufacturer discount program).
In addition, the Prescription Drug Marketing Act and its implementing regulations and state laws limit the distribution of prescription pharmaceutical product samples, and the DSCSA imposes requirements to ensure accountability in distribution and to identify and remove prescription drug and biological products that may be counterfeit, stolen, contaminated, or otherwise harmful from the market. 31 Expedited Development and Review Programs FDA offers a number of expedited development and review programs for qualifying product candidates.
In addition, the Prescription Drug Marketing Act and its implementing regulations and state laws limit the distribution of prescription pharmaceutical product samples, and the DSCSA imposes requirements to ensure accountability in distribution and to identify and remove prescription drug and biological products that may be counterfeit, stolen, contaminated, or otherwise harmful from the market. 32 Expedited Development and Review Programs FDA offers a number of expedited development and review programs for qualifying product candidates.
Commercialization of any treatments we develop will be affected by the level of competition from original and biosimilars products and the availability of reimbursement from government and other third-party payors. 23 Our ability to commercialize our proprietary cell products could be significantly and adversely affected if our competitors develop and commercialize products that are more effective, have a better safety profile, are more convenient or are less expensive than our products.
Commercialization of any treatments we develop will be affected by the level of competition from original and biosimilars products and the availability of reimbursement from government and other third-party payors. 24 Our ability to commercialize our proprietary cell products could be significantly and adversely affected if our competitors develop and commercialize products that are more effective, have a better safety profile, are more convenient or are less expensive than our products.
Treatment of these individuals is an area of unmet need that we believe TVGN 489 therapy has the opportunity to fill. These target populations also include COVID-19 patients with a non-B-cell cancer indication, elderly and infirm acute COVID-19 patients, and those with immune suppression due solid organ or hematopoietic transplantation or autoimmunity or its treatment.
Treatment of these individuals is an area of unmet need that we believe TVGN 489 therapy has the opportunity to fill. These target populations also include COVID-19 patients with a non-B-cell cancer indication, elderly and infirm acute COVID-19 patients, and those with immune suppression due to solid organ or hematopoietic transplantation or autoimmunity or treatment of these conditions.
Khan also acted as Founder and Chief Strategist for Pharmique Health LLC, where he advised corporations on strategic commercial planning and other matters. Previously, Mr. Khan co-founded Tegelix Therapeutics, a now-defunct pharmaceutical company, and held various regional and global commercialization and alliance management roles at Hoechst Marion Roussel, Aventis, and then Sanofi-Aventis. 38
Khan also acted as Founder and Chief Strategist for Pharmique Health LLC, where he advised corporations on strategic commercial planning and other matters. Previously, Mr. Khan co-founded Tegelix Therapeutics, a now-defunct pharmaceutical company, and held various regional and global commercialization and alliance management roles at Hoechst Marion Roussel, Aventis, and then Sanofi-Aventis. 39
In our Phase 1 clinical trial for TVGN 489, following infusion, peripheral blood of five patients was collected at various timepoints throughout the six-month follow-up period. These samples were sent to Adaptive Biotechnologies (“Adaptive”) to evaluate the persistence of infused TVGN 489 in the patients following treatment, and Adaptive conducted analyses by sequencing protein chains of TCRs in the samples.
In our Phase 1 clinical trial for TVGN 489, following infusion, peripheral blood of six patients was collected at various timepoints throughout the follow-up period. These samples were sent to Adaptive Biotechnologies (“Adaptive”) to evaluate the persistence of infused TVGN 489 in the patients following treatment, and Adaptive conducted analyses by sequencing protein chains of TCRs in the samples.
It is impossible to predict whether further legislative changes will be enacted or whether FDA regulations, guidance, policies, or interpretations will change, and the effects of any such changes. 26 Preclinical and Clinical Development Before an applicant can begin testing the potential product candidate in human subjects, the applicant must first conduct preclinical studies.
It is impossible to predict whether further legislative changes will be enacted or whether FDA regulations, guidance, policies, or interpretations will change, and the effects of any such changes. 27 Preclinical and Clinical Development Before an applicant can begin testing the potential product candidate in human subjects, the applicant must first conduct preclinical studies.
CD8+ T cells work in conjunction with HLA-class I molecules, and CD4+ T cells work in conjunction with HLA-class II molecules. Currently available cell-based immunotherapy approaches include genetically unmodified T cells applied to the treatment of viruses early after transplant and genetically modified chimeric antigen receptor (“CAR”) T cells used to treat a selected subset of malignancies.
CD8+ T cells work in conjunction with HLA-class I molecules, and CD4+ T cells work in conjunction with HLA-class II molecules. 9 Currently available allogeneic cell-based immunotherapy approaches include genetically unmodified T cells applied to the treatment of viruses early after transplant and genetically modified chimeric antigen receptor (“CAR”) T cells used to treat a selected subset of malignancies.
These treatments may also require lifelong monitoring for the development and treatment of infections due to eradication of normal parts of the immune system along with the cancer. In November 2023, FDA announced that it had “received reports of T-cell malignancies” in patients who received certain autologous CAR T cell immunotherapies.
These treatments may also require lifelong monitoring for the development and treatment of infections due to eradication of normal parts of the immune system along with the cancer. 10 In November 2023, FDA announced that it had “received reports of T-cell malignancies” in patients who received certain CAR T cell immunotherapies.
The IRA also creates a drug price negotiation program under which the prices for Medicare units of certain high Medicare spend drugs and biologicals without generic or biosimilar competition will be capped by reference to, among other things, a specified non-federal average manufacturer price starting in 2026.
The IRA also created a drug price negotiation program under which the prices for Medicare units of certain high Medicare spend drugs and biologicals without generic or biosimilar competition will be capped by reference to, among other things, a specified non-federal average manufacturer price starting in 2026.
A Phase 2 treatment trial examining the safety and efficacy of TVGN 489 in individuals with Long COVID is currently under development. ● Leveraging our ExacTcell technology to develop therapies for additional indications . In addition to TVGN 489, we are leveraging our ExacTcell technology to advance product candidates in virology, oncology, and other conditions.
A Phase 2 treatment trial examining the safety and efficacy of TVGN 489 in individuals with Long COVID is currently under consideration. ● Leveraging our ExacTcell technology to develop therapies for additional indications . In addition to TVGN 489, we are leveraging our ExacTcell technology to advance product candidates in virology, oncology, and other conditions.
Interim patent extensions are not available for a product candidate for which a BLA has not been submitted. 32 Biosimilars and Marketing Exclusivities The BPCIA created an abbreviated approval pathway for biological product candidates shown to be highly similar to or interchangeable with an FDA licensed biological product.
Interim patent extensions are not available for a product candidate for which a BLA has not been submitted. 33 Biosimilars and Marketing Exclusivities The BPCIA created an abbreviated approval pathway for biological product candidates shown to be highly similar to or interchangeable with an FDA licensed biological product.
In addition, the IRA establishes a Medicare Part B inflation rebate scheme effective January 2023 and a Medicare Part D inflation rebate scheme effective October 2022, under which, generally speaking, manufacturers will owe rebates if the price of a Part B or Part D drug increases faster than the pace of inflation.
In addition, the IRA established a Medicare Part B inflation rebate scheme effective January 2023 and a Medicare Part D inflation rebate scheme effective October 2022, under which, generally speaking, manufacturers will owe rebates if the price of a Part B or Part D drug increases faster than the pace of inflation.
We also believe that ExacTcell can enable us to deliver products faster, at a greater scale, and at lower cost than future competing cell therapies, if any. 8 ExacTcell focuses on the selection and expansion of naturally occurring, genetically unmodified CD8+ CTLs to target multiple, distinct, preselected antigens present only on virus-infected or malignant cells and to kill those cells.
We also believe that ExacTcell can enable us to deliver products faster, at a greater scale, and at lower cost than future competing cell therapies, if any. 8 ExacTcell focuses on the selection and expansion of naturally occurring, genetically unmodified CD8+ CTLs to target multiple, distinct, preselected antigenic peptides present only on virus-infected or malignant cells and to kill those cells.
Analysis of COVID-19 viral load showed that the patients were early in their COVID-19 disease course. Patients were treated with TVGN 489 at one of four dose levels: 1 x 10 5 /kg; 3 x 10 5 /kg; 1 x 10 6 /kg; or 3 x 10 6 /kg.
Analysis of COVID-19 viral load showed that the patients were early in their COVID-19 disease course at the time of treatment. Patients were treated with TVGN 489 at one of four dose levels: 1 x 10 5 /kg; 3 x 10 5 /kg; 1 x 10 6 /kg; or 3 x 10 6 /kg.
Our strategy is to target large patient populations for each pipeline product. Key elements of our strategy to advance toward this goal include the following: ● Advancing the clinical development of TVGN 489 for the treatment of COVID-19 and Long COVID .
Our strategy is to target large or underserved patient populations for each pipeline product. Key elements of our strategy to advance toward this goal include the following: ● Advancing the clinical development of TVGN 489 for the treatment of COVID-19 and Long COVID .
This protocol is in a very early stage of development. 19 Other Discovery Programs, Product Candidates and Indications In addition to TVGN 489, we have several product candidates under early-stage development in virology, neurology, and oncology using our ExacTcell technology.
This protocol is in a very early stage of development. 20 Other Discovery Programs, Product Candidates and Indications In addition to TVGN 489, we have several product candidates under early-stage development in virology, neurology, and oncology using our ExacTcell technology.
As of February 24, 2025, our U.S. intellectual property portfolio includes three U.S. patents relating to TVGN 489 for the treatment of COVID-19, nine pending U.S. patent applications, including two patent applications relating to the treatment of COVID-19, six relating to the treatment of other viruses or cancer, and one related to artificial intelligence-driven T cell target identification and receptor engagement, as well as thirteen ex-U.S. patent applications, including applications in Australia, Canada, Europe, Japan, Qatar, United Arab Emirates, and the Patent Cooperation Treaty (PCT) directed at viral specific T cells, methods of treating and preventing viral infections, methods for developing CD3+CD+ cells against multiple viral epitopes for the treatment of viral infections, and systems for predicting immunologically active peptides with machine learning models, which have anticipated expiration dates through December 16, 2044.
As of March 27, 2026, our U.S. intellectual property portfolio includes three U.S. patents relating to TVGN 489 for the treatment of COVID-19, nine pending U.S. patent applications, including two patent applications relating to the treatment of COVID-19, six relating to the treatment of other viruses or cancer, and one related to artificial intelligence-driven T cell target identification and receptor engagement, as well as thirteen ex-U.S. patent applications, including applications in Australia, Canada, Europe, Japan, Qatar, United Arab Emirates, and the Patent Cooperation Treaty (PCT) directed at viral specific T cells, methods of treating and preventing viral infections, methods for developing CD3+CD+ cells against multiple viral epitopes for the treatment of viral infections, and systems for predicting immunologically active peptides with machine learning models, which have anticipated expiration dates through December 16, 2044.
While recent press releases from Invivyd confirm continued activity of Pemivibart against circulating strains of SARS-CoV-2, third-party research showed that inhibitory concentrations needed for neutralization of the JN.1 sublineages increased for Pemivibart, and that activity was substantially adversely impacted by the currently highest circulating variant at the time of the research.
While press releases from Invivyd confirmed continued activity of Pemivibart against circulating strains of SARS-CoV-2, third-party research showed that inhibitory concentrations needed for neutralization of the JN.1 sublineages increased for Pemivibart, and that activity was substantially adversely impacted by the currently highest circulating variant at the time of the research.
In addition, we own a registered trademark for “Tevogen Bio” (and design), and have applied for a registered trademark protection for “ExacTcell” and “Tevogen.AI” (and logo) with the USPTO. 24 Human Capital Resources Our success depends on our ability to attract and retain highly qualified management and personnel.
In addition, we own a registered trademark for “Tevogen Bio” (and design), and have applied for a registered trademark protection for “AdapTcell”, “ExacTcell”, “PredicTcell”, and “Tevogen.AI” (and logo) with the USPTO. Human Capital Resources Our success depends on our ability to attract and retain highly qualified management and personnel.
As of March 21, 2025, we had 18 full-time and no part-time employees. We value a work culture that encourages employees, contractors, and vendors to contribute their unique and diverse perspectives, to harness optimism and creativity, and to be ready to learn and develop solutions towards a common and greater purpose of developing accessible immunotherapies.
As of March 27, 2026, we had 18 full-time and no part-time employees. We value a work culture that encourages employees, contractors, and vendors to contribute their unique and diverse perspectives, to harness optimism and creativity, and to be ready to learn and develop solutions towards a common and greater purpose of developing accessible immunotherapies.
This is in significant contrast with the target loss of anti-spike monoclonal antibody therapies, which has led to the withdrawal of emergency use authorizations (“EUAs”) that had been granted during the now-expired COVID-19 National Public Health Emergency. COVID-19 variants have demonstrated how this virus is able to escape our immune system through mutation.
This is in significant contrast with the target loss of anti-spike monoclonal antibody therapies, which has led to the withdrawal of EUAs that had been granted during the now-expired COVID-19 National Public Health Emergency. 14 COVID-19 variants have demonstrated how this virus is able to escape our immune system through mutation.
Information About Our Executive Officers The table below sets forth certain information concerning our executive officers serving as of the filing of this Annual Report : Name Age Current Position Dr. Ryan Saadi 60 Chief Executive Officer, Chairperson and Director Kirti Desai 68 Chief Financial Officer Dr.
Information About Our Executive Officers The table below sets forth certain information concerning our executive officers serving as of the filing of this Annual Report: Name Age Current Position Dr. Ryan Saadi 61 Chief Executive Officer, Chairperson and Director Kirti Desai 69 Chief Financial Officer Dr.
We have observed TVGN 489’s targets to be generally retained, in nearly all cases at greater than a 95% level of retention, in the genome of all of the isolates of SARS-CoV-2 variants that we have studied to date.
TVGN 489’s targets have also persisted in studied COVID-19 variants. We have observed TVGN 489’s targets to be generally retained, in nearly all cases at greater than a 95% level of retention, in the genome of all of the isolates of SARS-CoV-2 variants that we have studied to date.
EBV is a common virus that infects over 90% of the world’s adult population, according to the World Health Organization (the “WHO”), and is mainly transmitted through saliva, but also through other body fluids such as blood and semen. EBV is the leading cause of infectious mononucleosis, and infects B-cells, a type of immune cell.
EBV is a common virus that infects over 90% of the world’s adult population, according to the WHO, and is mainly transmitted through saliva, but also through other body fluids such as blood and semen. EBV is the leading cause of infectious mononucleosis, and infects B-cells, a type of immune cell.
Our efforts to develop manufacturing capability are currently focused on acquiring a manufacturing and research and development facility, including through collaboration with a potential facility development partner. ● Forming strategic alliances and collaborating with partners to augment our capabilities .
Our efforts to develop manufacturing capability are currently focused on acquiring a manufacturing and research and development facility, including through collaboration with a potential facility development partner. ● Forming strategic alliances, collaborating with partners, and entering into business combinations to augment our capabilities .
The convenience of “off-the-shelf” – manufactured and stored for immediate use – therapy has the potential to offer timely and cost-efficient therapeutics by potentially eliminating the need for specialized medical facilities, unlike existing platforms.
The convenience of “off-the-shelf” – pre-manufactured and ready-to-use - therapy has the potential to offer timely and cost-efficient therapeutics by potentially eliminating the need for specialized medical facilities, unlike existing platforms.
Although a vaccine for HPV exists, the National Cancer Institute estimates that as of 2022, only 58.6% of adolescents between the ages of 13 and 15 had received the recommended doses, estimated vaccination among older populations is lower, and the COVID pandemic has shown that significant portions of the population will avoid vaccination.
Although a vaccine for HPV exists, the National Cancer Institute estimates that as of 2023, only 57.3% of adolescents between the ages of 13 and 15 had received the recommended doses, estimated vaccination among older populations is lower, and the COVID pandemic has shown that significant portions of the population will avoid vaccination.
Cancer cells may not always express an ideal T cell target on their own. However, it is possible to coat a cancer cell with a well-recognized target peptide using monoclonal antibodies or liposomes. We believe this would allow our target specific CTLs to then attack the cancer cells.
Non-viral (sporadic) cancers may not always express an ideal T cell target on their own. However, it is possible to coat this sort of cancer cell with a well-recognized target peptide using monoclonal antibodies or liposomes. We believe this would allow our target specific CTLs to then attack the cancer cells.
CD8+ CTLs in ExacTcell-based products target multiple and distinct antigens, with the aim to circumvent the impact of mutations in viruses and cancer cells, which can render existing treatments focused on a single target ineffective.
CD8+ CTLs in ExacTcell-based products target multiple and distinct antigens, with the aim to circumvent the impact of mutations in viruses and virally driven as well as sporadic cancer cells, which can render existing treatments focused on a single target ineffective.
Neal Flomenberg 71 Chief Scientific Officer and Global R&D Lead Sadiq Khan 63 Chief Commercial Officer 37 Dr. Ryan Saadi has served as our Chief Executive Officer and Chairperson since February 2024, and served as Chief Executive Officer and Chairperson of Tevogen Bio beginning in June 2020. Dr.
Neal Flomenberg 72 Chief Scientific Officer and Global R&D Lead Sadiq Khan 64 Chief Commercial Officer Dr. Ryan Saadi has served as our Chief Executive Officer and Chairperson since February 2024, and served as Chief Executive Officer and Chairperson of Tevogen Bio beginning in June 2020. Dr.
As evidence of this, despite selection of T cell targets in 2020, more than 95% of the targets for the HLA-A*02:01 TVGN 489 product targets have remained intact through the first quarter of 2025.
As evidence of this, despite selection of T cell targets in 2020, more than 95% of the targets for the HLA-A*02:01 TVGN 489 product targets have remained intact through March 2026.
Both drugs also present challenges for subsets of patients. Paxlovid is associated with many drug-drug interactions, resulting in the need to temporarily stop ongoing medications or seek alternative therapy and thereby making it difficult for some patients to take. This is especially true for patients on multiple medications, which is often true of high-risk patients requiring anti-COVID-19 treatment.
Paxlovid is associated with many drug-drug interactions, resulting in the need to temporarily stop ongoing medications or seek alternative therapy and thereby making it difficult for some patients to take. This is especially true for patients taking multiple medications, which is often true of high-risk patients requiring anti-COVID-19 treatment.
Our senior leadership team is composed of accomplished scientists and biopharmaceutical leaders. The team brings together diverse experience across the entire life sciences spectrum, including biotechnology, pharmaceuticals, hospitals, public and private insurance, education, and health policy. Additionally, our team holds substantial expertise in drug development, global product launches, and commercialization and ensuring patient access across a range of therapeutic areas.
The team brings together diverse experience across the entire life sciences spectrum, including biotechnology, pharmaceuticals, hospitals, public and private insurance, education, and health policy. Additionally, our team holds substantial expertise in drug development, global product launches, and commercialization and ensuring patient access across a range of therapeutic areas.
Increased mortality, hospitalization, and incidence of Long COVID are higher in patients with B cell malignancies due to inadequate vaccination response and the immunosuppressive consequences of treatment received for B cell cancers.
Increased mortality, hospitalization, and persistence of COVID-19 infection are higher in patients with B cell malignancies due to inadequate vaccination response and the immunosuppressive consequences of treatment received for B cell cancers.
Many states have analogous laws and regulations, such as: state anti-kickback and false claims laws that may apply to sales or marketing arrangements and claims involving healthcare items or services reimbursed by non-governmental third-party payors, including private insurers; laws that require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government or otherwise restrict payments that may be made to certain healthcare providers; laws that require drug manufacturers to report information related to clinical trials or information related to payments and other transfers of value to physicians and other healthcare providers or marketing expenditures; laws that restrict the ability of manufacturers to offer co-pay support to patients for certain prescription drugs; and laws and local ordinances that require identification or licensing of sales representatives.
Like the federal Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the statute or specific intent to violate it in order to have committed a violation. 35 Many states have analogous laws and regulations, such as: state anti-kickback and false claims laws that may apply to sales or marketing arrangements and claims involving healthcare items or services reimbursed by non-governmental third-party payors, including private insurers; laws that require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government or otherwise restrict payments that may be made to certain healthcare providers; laws that require drug manufacturers to report information related to clinical trials or information related to payments and other transfers of value to physicians and other healthcare providers or marketing expenditures; laws that restrict the ability of manufacturers to offer co-pay support to patients for certain prescription drugs; and laws and local ordinances that require identification or licensing of sales representatives.
In addition, although the federal False Claims Act is a civil statute, False Claims Act violations may also implicate various federal criminal statutes. 34 The healthcare fraud provisions of The Health Insurance Portability and Accountability Act (“HIPAA”) prohibit knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program, including private third-party payors, knowingly and willfully embezzling or stealing from a healthcare benefit program, willfully obstructing a criminal investigation of a healthcare offense, and knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items or services.
The healthcare fraud provisions of The Health Insurance Portability and Accountability Act (“HIPAA”) prohibit knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program, including private third-party payors, knowingly and willfully embezzling or stealing from a healthcare benefit program, willfully obstructing a criminal investigation of a healthcare offense, and knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items or services.
We believe that the U.S. opportunity for our key pipeline products includes: ● TVGN 489: Approximately 750,000 patients with B cell hematologic cancer, 2,175,000 addressable patients with other cancers, including lung, breast, colon, pancreatic and liver, and 18 million addressable patients with Long COVID. ● TVGN 920: Approximately 5.5 million patients with high-risk HPV infections, of which 200,000 are diagnosed with high grade dysplasia per year. ● TVGN 930: Approximately 92,000 patients with the main EBV-associated lymphomas. ● TVGN 960: Approximately 110,000 patients with HPV-related mouth and throat cancer. ● TVGN 601: Approximately 1 million patients with EBV-related multiple sclerosis. ● TVGN 116: Approximately 500,000 to 1 million patients with high-risk chronic Hepatitis B for prevention of liver cancer.
Essential commercial capabilities, such as market analytics, pricing, and commercial operations functions, are continuously being developed as we progress toward the later-stage development of TVGN 489. 21 We believe that the U.S. opportunity for our key pipeline products includes: ● TVGN 489: Approximately 750,000 patients with B cell hematologic cancer, 2,175,000 addressable patients with other cancers, including lung, breast, colon, pancreatic and liver, and 18 million addressable patients with Long COVID. ● TVGN 920: Approximately 5.5 million patients with high-risk HPV infections, of which 200,000 are diagnosed with high grade dysplasia per year. ● TVGN 930: Approximately 92,000 patients with the main EBV-associated lymphomas. ● TVGN 960: Approximately 110,000 patients with HPV-related mouth and throat cancer. ● TVGN 601: Approximately 1 million patients with EBV-related multiple sclerosis. ● TVGN 116: Approximately 500,000 to 1 million patients with high-risk chronic Hepatitis B for prevention of liver cancer.
As a result, our competitors may discover, develop, license, or commercialize products before or more successfully than we do. TVGN 489 is being developed to fill the critical gaps that exist in COVID-19 therapeutics for the immunocompromised, the high-risk elderly, and Long COVID. Only one product has been FDA approved to date for treatment of COVID-19 in the immunocompromised population.
As a result, our competitors may discover, develop, license, or commercialize products before or more successfully than we do. TVGN 489 is being developed to fill the critical gaps that exist in COVID-19 therapeutics for the immunocompromised, the high-risk elderly, and Long COVID.
A large number of Americans remain highly vulnerable to COVID-19 infection, including immunocompromised and elderly patients. For example, the rate of hospitalization in cancer patients with COVID-19 infection remains high, specifically for those under active chemotherapy or immunosuppression. There is therefore a high unmet need to have an effective treatment available for these populations.
For example, the rate of hospitalization in cancer patients with COVID-19 infection remains high, specifically for those under active chemotherapy or immunosuppression. There is therefore a high unmet need to have an effective treatment available for these populations.
All patients in the interventional arm of our Phase 1 clinical trial noted improved symptoms within two to three days, which is shorter than the average noted by patients in the observational arm, and 83% of patients in the interventional arm had negative nasal swab polymerase chain reaction tests and there was a 99% viral load reduction in all patients within 14 days.
All patients in the interventional arm of our Phase 1 clinical trial noted improved symptoms within two to three days, which is shorter than the average noted by patients in the observational arm, and there was a ≥ 99% viral load reduction in all patients by PCR within 14 days.
We believe that sustainability and commercial success in the forthcoming era of medicine will rely on ensuring patient accessibility through advanced science, innovative business models and engagement across the development lifecycle and healthcare system.
We believe that sustainability and commercial success in the forthcoming era of medicine will rely on ensuring patient accessibility through advanced science, innovative business models and engagement throughout various stages of the drug development and commercialization lifecycle.
We also intend to explore options to work with partners to augment the study and treatment of patients and the impact of our product candidates, including medical professionals, healthcare professional networks, pharmacy benefit managers, insurance companies, and artificial intelligence companies.
We also intend to explore options to work with partners to augment the study and treatment of patients and the impact of our product candidates, including medical professionals, healthcare professional networks, pharmacy benefit managers, insurance companies, and artificial intelligence companies. In addition, from time to time we enter into letters of intent to explore potential acquisitions.
According to the WHO, HPV is responsible for 99% of cervical cancers. Mouth and throat cancers are more diverse, but the WHO estimates that about 70% of oropharyngeal cancers are due to HPV.
According to the World Health Organization (the “WHO”), HPV is responsible for 99% of cervical cancers. Mouth and throat cancers are more diverse, but the WHO estimates that in the U.S., about 60% to 70% of oropharyngeal cancers are due to HPV.
There are nonetheless ongoing efforts to develop additional anti-COVID monoclonal antibodies for treatment and prevention of COVID-19 infection. For example, in March 2024, Invivyd received an EUA of its product, Pemgarda (pemivibart), a broadly neutralizing monoclonal antibody used for COVID-19 prevention in immunocompromised individuals who have not either been exposed to or developed active COVID infection.
For example, in March 2024, Invivyd, Inc. received an EUA of its product, Pemgarda (pemivibart), a broadly neutralizing monoclonal antibody used for COVID-19 prevention in immunocompromised individuals who have not either been exposed to or developed active COVID infection.
TVGN 489 COVID-19 Reactive CD8+ T Cells Detected Throughout the Six-Month Follow Up Period Expansion and persistence of allogeneic T cells has been associated with disease control in many settings.
Taken together, we believe this data shows the persistence of TVGN 489 cells six months after administration. 18 TVGN 489 COVID-19 Reactive CD8+ T Cells Detected Throughout the Six-Month Follow Up Period Expansion and persistence of allogeneic T cells has been associated with disease control in many settings.
(“AlloVir”) is another company developing allogeneic T cell therapies for viral diseases. Neither Atara Bio nor AlloVir has an active development program for the treatment of COVID-19. AlloVir conducted a Phase 1b trial of an allogeneic, partially HLA-matched product candidate in COVID-19 and reported results of the trial in 2021 but has not continued clinical development.
Neither Atara Bio nor Kalaris has an active development program for the treatment of COVID-19. AlloVir conducted a Phase 1b trial of an allogeneic, partially HLA-matched product candidate in COVID-19 and reported results of the trial in 2021 but did not continue clinical development.
We believe our allogeneic, precision T cell technology, ExacTcell TM , represents a significant scientific breakthrough with the potential to mainstream cell therapy with a new class of off-the-shelf – manufactured and stored for immediate use – T cell therapies with diverse applications across virology, oncology, and other areas.
We believe our precision T cell technology, ExacTcell TM , represents a significant scientific breakthrough with the potential to mainstream cell therapy with a new class of off-the-shelf – pre-manufactured and ready-to-use – allogeneic T cell therapies with diverse applications across virology, oncology, and other areas. Allogeneic therapeutics are intended to be infused into individuals other than the original donor.
Identification of appropriate COVID-19 peptide targets for additional HLA molecules remains ongoing, and we plan to continue this testing until we are confident that between 90% and 95% of the COVID-19 infected population could be treated based on our research. We believe generating these CTLs can provide treatment for SARS-CoV-2 or, with the appropriate targets, for other viral infections.
Identification of appropriate COVID-19 peptide targets for additional HLA molecules remains ongoing, and we plan to continue this testing until we are confident that between 90% and 95% of the COVID-19 infected population could be treated based on our research.
Although the number of daily reported cases and deaths has declined, the emergence of more transmissible variants has led to spikes in cases and mortality, and variants are expected to continue to evolve over time. 12 The current COVID-19 landscape is also characterized by continued vaccine hesitancy among a significant portion of the population, unequal access to vaccines and treatment, lack of response in some immunocompromised and other high-risk groups, and breakthrough cases among the vaccinated due in part to increased immune evasion by current and emerging variants and the relatively short duration of protection by booster shots.
The current COVID-19 landscape is also characterized by continued vaccine hesitancy among a significant portion of the population, unequal access to vaccines and treatment, lack of response in some immunocompromised and other high-risk groups, and breakthrough cases among the vaccinated due in part to increased immune evasion by current and emerging variants and the relatively short duration of protection by booster shots.
ExacTcell CTLs are not genetically altered in the manufacturing process and although they expand during manufacture, this is the expected response of a T-lymphocyte when encountering its target antigen.
In contrast, CTLs generated using the ExacTcell technology come from a healthy donor with a normal immune system. ExacTcell CTLs are not genetically altered in the manufacturing process and although they expand during manufacture, this is the expected response of a T-lymphocyte when encountering its target antigen.
The only significant finding was a reduced rate of hospitalization in the CCP treatment group versus the non-treated group, with zero hospitalizations out of 59 patients versus five out of 58. In both of these studies, CCP was dosed multiple times. This therapy is an FDA licensed treatment through a blood donation center and is not marketed.
The only significant finding was a reduced rate of hospitalization in the CCP treatment group versus the non-treated group, with zero hospitalizations out of 59 patients versus five out of 58. In both of these studies, CCP was dosed multiple times.
Our First Product Candidate Our first product candidate, TVGN 489, is an off-the-shelf, allogeneic cytotoxic CD8+ T cell therapy designed to fill a critical remaining gap in COVID-19 therapeutic solutions for the immunocompromised and the high-risk elderly, who remain at substantial risk for poor outcomes, with potential applications in both treatment and prevention of Long COVID.
We expect efforts to produce second generation products based on this process may begin shortly after and if initial regulatory approval of the first-generation product is obtained. 11 Our First Product Candidate Our first product candidate, TVGN 489, is an off-the-shelf, allogeneic cytotoxic CD8+ T cell therapy designed to fill a critical remaining gap in COVID-19 therapeutic solutions for the immunocompromised and the high-risk elderly, who remain at substantial risk for poor outcomes, with potential applications in both treatment and prevention of Long COVID.
These both produce pores in the target cell’s membrane and also trigger a process known as apoptosis, or programmed cell death, which is built into all our cells.
These both produce pores in the target cell’s membrane and also trigger a process known as apoptosis, or programmed cell death, which is built into all our cells. Then, once the infected cells die, new, healthy cells are able to grow in their place.
However, the evidence of their prolonged persistence provides us with encouragement for future applications of the ExacTcell technology, particularly in oncology. 18 We believe based on precedential industry examples, including in areas with high unmet needs or strong early phase clinical trial results, that we may be able to commence pivotal trials of TVGN 489 on the basis of the results of our completed Phase 1 trial.
We believe based on precedential industry examples, including in areas with high unmet needs or strong early phase clinical trial results, that we may be able to commence pivotal trials of TVGN 489 on the basis of the results of our completed Phase 1 trial.
Clinical Development for COVID-19 Patients FDA permitted our IND for TVGN 489 to proceed in May 2021, and we began enrolling patients in the Phase 1 proof-of-concept trial of TVGN 489 for the treatment of high-risk ambulatory adult COVID-19 patients in October 2021.
Modifications to the ExacTcell platform have increased the content of active CTLs to over 80% on a consistent basis. 16 Clinical Development for COVID-19 Patients FDA permitted our IND for TVGN 489 to proceed in May 2021, and we began enrolling patients in the Phase 1 proof-of-concept trial of TVGN 489 for the treatment of high-risk ambulatory adult COVID-19 patients in October 2021.
Having multiple targets within a product also blunts the impact of any one mutation. 9 Due to the targeted nature of the cells ExacTcell can produce, we also believe we may be able to avoid some of the unwanted corollary effects observed in other T cell immunotherapies.
Due to the targeted nature of the cells ExacTcell can produce, we also believe we may be able to avoid some of the unwanted corollary effects observed in other T cell immunotherapies.
Whether the prolonged persistence of the CTLs used in this study is of benefit in the treatment of COVID-19, Long COVID, or alternate future viral or oncologic targets for these CTLs merits further examination.
Whether the prolonged persistence of the CTLs used in this study is of benefit in the treatment of COVID-19, Long COVID, or alternate future viral or oncologic targets for these CTLs merits further examination. However, the evidence of their prolonged persistence provides us with encouragement for future applications of the ExacTcell technology, particularly in oncology.
We use a technique known as tetramer staining to assess whether T cells recognized these target peptides, assessed cytotoxicity against individual peptide-pulsed and non-pulsed targets, and selected final peptides for use in TVGN 489 on that basis.
Discovery and Preclinical Data Our approach to identifying CTL targets starts with computer-based prediction and then tests candidate peptides functionally with T cells. We use a technique known as tetramer staining to assess whether T cells recognized these target peptides, assessed cytotoxicity against individual peptide-pulsed and non-pulsed targets, and selected final peptides for use in TVGN 489 on that basis.
Requirements with respect to data integrity include, among other things, controls ensuring complete and secure data; activities documented at the time of performance; audit trail functionality; authorized access and limitations; validated computer systems; and review of records for accuracy, completeness, and compliance with established standards. 30 Post-approval changes to the manufacturing process are strictly regulated, and, depending on the significance of the change, may require FDA approval before being implemented.
Requirements with respect to data integrity include, among other things, controls ensuring complete and secure data; activities documented at the time of performance; audit trail functionality; authorized access and limitations; validated computer systems; and review of records for accuracy, completeness, and compliance with established standards.
In January 2024, FDA required a class-wide black box warning be added to the label of these CAR T products regarding this risk. Currently approved autologous CAR-T platforms utilize the patient’s own T cells to manufacture their products.
In January 2024, FDA required a class-wide black box warning be added to the label of these CAR T products regarding this risk, and continues to recommend long-term monitoring. Currently approved autologous CAR-T platforms utilize the patient’s own T cells to manufacture their products. These cells have previously been exposed to cancer therapy and are genetically altered and subsequently expanded.