Biggest changeGiven the lack of effective therapies for EoE and barzolvolimab’s potential as a mast cell depleting agent, we believe EoE is an important indication for future study and plan to initiate a Phase 2 multi-center, randomized, double-blind, placebo-controlled subcutaneous study designed to assess the treatment effects and safety of barzolvolimab in patients with EoE in the first half of 2023. 56 Table of Contents Additional Barzolvolimab Development Activities Manufacturing activities to support the introduction of the barzolvolimab subcutaneous formulation into the clinical program have been completed and, in September 2021, we initiated dosing in a randomized, double-blind, placebo-controlled, Phase 1 study designed to evaluate the safety of single ascending doses of the subcutaneous formulation of barzolvolimab in healthy volunteers.
Biggest changeGiven the lack of effective therapies for EoE and barzolvolimab’s potential as a mast cell depleting agent, we believe EoE is an important indication for future study. The randomized, double-blind, placebo-controlled, parallel group Phase 2 study is evaluating the efficacy and safety profile of subcutaneous barzolvolimab in patients with active EoE.
Investing Activities Net cash provided by investing activities was $89.9 million for the year ended December 31, 2022 compared to net cash used in investing activities of $216.2 million for the year ended December 31, 2021.
Net cash provided by investing activities was $89.9 million for the year ended December 31, 2022 compared to net cash used in investing activities of $216.2 million for the year ended December 31, 2021.
Financing Activities Net cash provided by financing activities was $4.1 million for the year ended December 31, 2022 compared to $272.4 million for the year ended December 31, 2021. The decrease in net cash provided by financing activities was primarily due to a decrease in net proceeds from stock issuances.
Net cash provided by financing activities was $4.1 million for the year ended December 31, 2022 compared to $272.4 million for the year ended December 31, 2021. The decrease in net cash provided by financing activities was primarily due to a decrease in net proceeds from stock issuances.
Targets are being selected based on new science as well as their compatibility to be used in bispecific antibody formats with Celldex’s existing antibody programs. Development is focused on emerging, important pathways controlling inflammatory diseases or immunity to tumors. Our goal is to build a fully integrated, commercial-stage biopharmaceutical company that develops important therapies for patients with unmet medical needs.
Targets are being selected based on new science as well as their compatibility to be used in bispecific antibody formats with our existing antibody programs. Development is focused on emerging, important pathways controlling inflammatory diseases or immunity to tumors. Our goal is to build a fully integrated, commercial-stage biopharmaceutical company that develops important therapies for patients with unmet medical needs.
CSU is one of the most frequent dermatologic diseases with a prevalence of 0.5-1.0% of the total population or up to approximately 1 to 3 million patients in the United States (Weller et al. 2010. Hautarzt. 61(8), Bartlett et al. 2018. DermNet.Org). Approximately 50% of patients with CSU achieve symptomatic control with antihistamines.
It is one of the most frequent dermatologic diseases with a prevalence of 0.5-1.0% of the total population or up to approximately 1 to 3 million patients in the United States (Weller et al. 2010. Hautarzt. 61(8), Bartlett et al. 2018. DermNet.Org). Approximately 50% of patients with CSU achieve symptomatic control with antihistamines.
We estimate that clinical trials of the type we generally conduct are typically completed over the following timelines: Estimated Completion Clinical Phase Period Phase 1 1 – 2 Years Phase 2 1 – 5 Years Phase 3 1 – 5 Years The duration and the cost of clinical trials may vary significantly over the life of a project as a result of differences arising during the clinical trial protocol, including, among others, the following: ● the number of patients that ultimately participate in the trial; 50 Table of Contents ● the duration of patient follow-up that seems appropriate in view of results; ● the number of clinical sites included in the trials; ● the length of time required to enroll suitable patient subjects; and ● the efficacy and safety profile of the drug candidate.
We estimate that clinical trials of the type we generally conduct are typically completed over the following timelines: Estimated Completion Clinical Phase Period Phase 1 1 – 2 Years Phase 2 1 – 5 Years Phase 3 1 – 5 Years 53 Table of Contents The duration and the cost of clinical trials may vary significantly over the life of a project as a result of differences arising during the clinical trial protocol, including, among others, the following: ● the number of patients that ultimately participate in the trial; ● the duration of patient follow-up that seems appropriate in view of results; ● the number of clinical sites included in the trials; ● the length of time required to enroll suitable patient subjects; and ● the efficacy and safety profile of the drug candidate.
Research and Development Expense Research and development expenses consist primarily of (i) personnel expenses, (ii) laboratory supply expenses relating to the development of our technology, (iii) facility expenses and (iv) product development expenses associated with our drug candidates as follows: Year Ended Increase/ December 31, (Decrease) 2022 2021 $ % (In thousands) Personnel $ 32,674 $ 26,424 $ 6,250 24 % Laboratory supplies 6,310 5,981 329 6 % Facility 4,764 4,771 (7) 0 % Product development 32,156 12,230 19,926 163 % 61 Table of Contents Personnel expenses primarily include salary, benefits, stock-based compensation and payroll taxes.
Research and Development Expense Research and development expenses consist primarily of (i) personnel expenses, (ii) laboratory supply expenses relating to the development of our technology, (iii) facility expenses and (iv) product development expenses associated with our drug candidates as follows: Year Ended Increase/ December 31, (Decrease) 2022 2021 $ % (In thousands) Personnel $ 32,674 $ 26,424 $ 6,250 24 % Laboratory supplies 6,310 5,981 329 6 % Facility 4,764 4,771 (7) 0 % Product development 32,156 12,230 19,926 163 % Personnel expenses primarily include salary, benefits, stock-based compensation and payroll taxes.
Patients will then enter a follow-up phase for an additional 24 weeks. In addition, the study includes the option for patients who have symptoms following the treatment phase, including patients who were on placebo, to enroll in an open label extension where all patients receive 300 mg every 9 weeks of barzolvolimab.
Patients will then enter a follow-up phase for an additional 24 weeks. In addition, the study includes the option for patients who have symptoms following the treatment phase, including patients who were on placebo, to enroll in an open label extension where all patients receive 300 mg of barzolvolimab every 8 weeks.
Discounted cash flow models are typically used in these tests, and the models require the use of significant estimates and assumptions including but not limited to: ● timing and costs to complete the in-process projects; 59 Table of Contents ● timing and probability of success of clinical events or regulatory approvals; ● estimated future cash flows from product sales resulting from completed products and in-process projects; and ● discount rates Each IPR&D asset is assessed for impairment at least annually or when impairment indicators are present.
Discounted cash flow models are typically used in these tests, and the models require the use of significant estimates and assumptions including but not limited to: ● timing and costs to complete the in-process projects; ● timing and probability of success of clinical events or regulatory approvals; ● estimated future cash flows from product sales resulting from completed products and in-process projects; and ● discount rates Each IPR&D asset is assessed for impairment at least annually or when impairment indicators are present.
CDX-585 CDX-585 combines our proprietary highly active PD-1 blockade and anti-ILT4 blockade to prevent immunosuppressive signals in T cells and myeloid cells, respectively. ILT4 is emerging as an important immune checkpoint on myeloid cells and is thought to contribute to resistance to PD-1 blockade.
CDX-585 CDX-585 combines our proprietary highly active PD-1 blockade and anti-ILT4 blockade to overcome immunosuppressive signals in T cells and myeloid cells, respectively. ILT4 is emerging as an important immune checkpoint on myeloid cells and is thought to contribute to resistance to PD-1 blockade.
The following table indicates the amount incurred for each of our significant research programs and for other identified research and development activities during the years ended December 31, 2022, 2021 and 2020.
The following table indicates the amount incurred for each of our significant research programs and for other identified research and development activities during the years ended December 31, 2023, 2022 and 2021.
The use of our cash flows for operations has primarily consisted of salaries and wages for our employees; facility and facility-related costs for our offices, laboratories and manufacturing facility; fees paid in connection with preclinical studies, clinical studies, contract manufacturing, laboratory supplies and services; and consulting, legal and other professional fees.
The use of our cash flows for operations has primarily consisted of salaries and wages for our employees; facility and facility-related costs for our offices, laboratories and manufacturing facility; fees paid in connection with preclinical studies, clinical studies, 68 Table of Contents contract manufacturing, laboratory supplies and services; and consulting, legal and other professional fees.
We expect personnel expenses to increase over the next twelve months as a result of additional headcount to support the expanded development of barzolvolimab. Laboratory supplies expenses include laboratory materials and supplies, services, and other related expenses incurred in the development of our technology.
We expect personnel expenses to increase over the next twelve months as a result of additional headcount to support the expanded development of barzolvolimab. 65 Table of Contents Laboratory supplies expenses include laboratory materials and supplies, services and other related expenses incurred in the development of our technology.
This confirmed that serum tryptase level is a robust pharmacodynamic biomarker for assessing mast cell burden and clinical activity in inducible urticaria and potentially in other diseases with mast cell driven involvement. ● Barzolvolimab was well tolerated.
This confirmed that serum tryptase level is a robust pharmacodynamic biomarker for assessing mast cell burden and clinical activity in inducible urticaria and potentially in other diseases with mast cell driven involvement. ● Barzolvolimab was well tolerated across all cohorts.
IPR&D assets acquired in a business combination initially are recorded at fair value and accounted for as indefinite-lived intangible assets. These assets are capitalized on our balance sheets until either the project underlying them is completed or the assets become impaired.
IPR&D assets acquired in a business combination initially are recorded at fair value and accounted for as indefinite-lived intangible assets. These assets are capitalized on our balance sheets until either the project underlying them is completed or the assets 63 Table of Contents become impaired.
Our ability to continue funding our planned operations into and beyond twelve months from the issuance date is also dependent on the timing and manner of payment of the future milestones under the Settlement Agreement with SRS, in the event that we achieve the milestones related to those payments.
Our ability to continue funding our planned operations into and beyond twelve months from the issuance date is also dependent on the timing and manner of payment of the future milestone under the Settlement Agreement with SRS, in the event that we achieve the milestone related to that payment.
Targets are being selected based on new science as well as their compatibility to be used in bispecific antibody formats with our existing antibody programs. Development is focused on emerging, important pathways controlling inflammatory diseases or immunity to tumors.
Targets are being selected based on new science as well as their compatibility to be used in 61 Table of Contents bispecific antibody formats with our existing antibody programs. Development is focused on emerging, important pathways controlling inflammatory diseases or immunity to tumors.
The timing of any new contract manufacturing and research and development agreements, collaboration agreements, government contracts or grants and any payments under these agreements, contracts or grants cannot be easily predicted and may vary significantly from quarter to quarter. At December 31, 2022, our principal sources of liquidity consisted of cash, cash equivalents and marketable securities of $305.0 million.
The timing of any new contract manufacturing and research and development agreements, collaboration agreements, government contracts or grants and any payments under these agreements, contracts or grants cannot be easily predicted and may vary significantly from quarter to quarter. At December 31, 2023, our principal sources of liquidity consisted of cash, cash equivalents and marketable securities of $423.6 million.
On a quarterly basis, we revalue these obligations and record increases or decreases in their fair value as an adjustment to operating earnings. As of December 31, 2022, the fair value of our contingent consideration was $0.0 million.
On a quarterly basis, we revalue these obligations and record increases or decreases in their fair value as an adjustment to operating earnings. As of December 31, 2023, the 62 Table of Contents fair value of our contingent consideration was $0.0 million.
In July 2022 we announced that the first patient has been dosed in a Phase 2 study in patients with CIndU who remain symptomatic despite antihistamine therapy. The study will be conducted at approximately 85 sites across approximately 12 countries.
In July 2022, we announced that the first patient had been dosed in a Phase 2 study in patients with CIndU who remain symptomatic despite antihistamine therapy. The study is being conducted at approximately 85 sites across approximately 12 countries.
The $1.6 million increase in laboratory supply expenses for the year ended December 31, 2021, as compared to the year ended December 31, 2020, was primarily due to higher laboratory materials and supplies purchases. Facility expenses include depreciation, amortization, utilities, rent, maintenance and other related expenses incurred at our facilities.
The $0.3 million increase in laboratory supply expenses for the year ended December 31, 2022, as compared to the year ended December 31, 2021, was primarily due to higher laboratory services, materials and supplies purchases. Facility expenses include depreciation, amortization, utilities, rent, maintenance and other related expenses incurred at our facilities.
The $0.3 million increase in laboratory supply expenses for the year ended December 31, 2022, as compared to the year ended December 31, 2021, was primarily due to higher laboratory services, materials and supplies purchases. We expect laboratory supplies expenses to remain relatively consistent over the next twelve months, although there may be fluctuations on a quarterly basis.
The $1.0 million decrease in laboratory supply expenses for the year ended December 31, 2023, as compared to the year ended December 31, 2022, was primarily due to lower laboratory services, materials and supplies purchases. We expect laboratory supplies expenses to remain relatively consistent over the next twelve months, although there may be fluctuations on a quarterly basis.
Most adverse events were mild, and the most common (≥3 patients) were hair color changes (76%; n = 16/21), infusion reactions (43%; n = 9/21), taste changes (38%; n = 8/21), nasopharyngitis (24%; n = 5/21), malaise (24%; n = 5/21), and headache (19%; n = 4/21).
In the 3 mg/kg ColdU and SD cohorts, most adverse events were mild, and the most common (≥3 patients) were hair color changes (76%; n=16/21), infusion reactions (43%; n=9/21), taste changes (38%; n=8/21), nasopharyngitis (24%; n=5/21), malaise (24%; n=5/21), and headache (19%; n=4/21).
We concluded that the TAM program IPR&D asset was partially impaired, and a non-cash impairment charge of $14.5 million was recorded in the fourth quarter of 2020. During the third quarter of 2021, we evaluated the TAM program IPR&D asset for potential impairment as a result of a lack of interest in the program from third parties.
Intangible Asset Impairment During the third quarter of 2021, we evaluated the TAM program IPR&D asset for potential impairment as a result of a lack of interest in the program from third parties. We concluded that the TAM program IPR&D asset was fully impaired, and a non-cash impairment charge of $3.5 million was recorded in the third quarter of 2021.
The $6.3 million increase in personnel expenses for the year ended December 31, 2022, as compared to the year ended December 31, 2021, was primarily due to higher stock-based compensation expense and an increase in employee headcount.
The $7.4 million increase in personnel expenses for the year ended December 31, 2023, as compared to the year ended December 31, 2022, was primarily due to higher stock-based compensation expense and an increase in employee headcount.
The $4.5 million increase in personnel expenses for the year ended December 31, 2021, as compared to the year ended December 31, 2020, was primarily due to higher stock-based compensation expense and an increase in employee headcount. Laboratory supplies expenses include laboratory materials and supplies, services, and other related expenses incurred in the development of our technology.
The $6.3 million increase in personnel expenses for the year ended December 31, 2022, as compared to the year ended December 31, 2021, was primarily due to higher stock-based compensation expense and an increase in employee headcount. 67 Table of Contents Laboratory supplies expenses include laboratory materials and supplies, services and other related expenses incurred in the development of our technology.
We may decide to pay those milestone payments in cash, shares of our common stock or a combination thereof.
We may decide to pay that milestone payment in cash, shares of our common stock or a combination thereof.
Equity Offerings In November 2020, we filed an automatic shelf registration statement with the SEC to register for sale any combination of the types of securities described in the shelf registration statement. In May 2016, we entered into a controlled equity offering sales agreement with Cantor Fitzgerald & Co.
Equity Offerings In November 2023, we filed an automatic shelf registration statement with the SEC to register for sale any combination of the types of securities described in the shelf registration statement. On February 26, 2024, we entered into a controlled equity offering sales agreement with Cantor Fitzgerald & Co.
Our inability to raise additional capital, or to do so on terms reasonably acceptable to us, would jeopardize the future success of our business. During the past five years through December 31, 2022, we incurred an aggregate of $287.2 million in research and development expenses.
Our inability to raise additional capital, or to do so on terms reasonably acceptable to us, would jeopardize the future success of our business. 54 Table of Contents During the past five years through December 31, 2023, we incurred an aggregate of $338.8 million in research and development expenses.
There are currently no approved therapies for chronic inducible urticarias other than antihistamines and patients attempt to manage symptoms associated with their disease through avoidance of triggers. We are exploring cold-induced, dermographism (scratch-induced) and cholinergic (exercise-induced) urticarias.
There are currently no approved therapies for chronic inducible urticarias other than antihistamines and patients attempt to manage symptoms associated with their disease through avoidance of triggers. We are currently exploring cold-induced and dermographism (scratch-induced) urticarias in an ongoing Phase 2 study.
Litigation Settlement Related Loss We recorded a loss of $15.0 million in the second quarter of 2022 related to the Initial Payment due under the binding settlement term sheet (the “Term Sheet”) entered with SRS.
Litigation Settlement Related Loss We recorded a loss of $15.0 million in the second quarter of 2022 related to the Initial Payment due under the binding settlement term sheet entered with SRS, which was subsequently memorialized in a Settlement Agreement with SRS.
Compensation expense for all stock-based awards is recognized using the straight-line method over the term of vesting or performance. 60 Table of Contents RESULTS OF OPERATIONS Year Ended December 31, 2022 compared with Year Ended December 31, 2021 Year Ended Increase/ Increase/ December 31, (Decrease) (Decrease) 2022 2021 $ % (In thousands) Revenues: Product development and licensing agreements $ 56 $ 31 $ 25 81 % Contracts and grants 2,301 4,620 (2,319) (50) % Total revenues $ 2,357 $ 4,651 $ (2,294) (49) % Operating expenses: Research and development 82,258 53,311 28,947 54 % General and administrative 27,195 20,488 6,707 33 % Intangible asset impairment — 3,500 (3,500) (100) % Gain on fair value remeasurement of contingent consideration (6,862) (1,405) 5,457 388 % Litigation settlement related loss 15,000 — 15,000 n/a Total operating expenses 117,591 75,894 41,697 55 % Operating loss (115,234) (71,243) 43,991 62 % Investment and other income, net 2,909 505 2,404 476 % Net loss before income tax benefit (112,325) (70,738) 41,587 59 % Income tax benefit — 227 (227) (100) % Net loss $ (112,325) $ (70,511) $ 41,814 59 % Net Loss The $41.8 million increase in net loss for the year ended December 31, 2022, as compared to the year ended December 31, 2021, was primarily due to the $15.0 million litigation settlement related loss recorded in the second quarter of 2022 and increases in research and development and general and administrative expenses, partially offset by an increase in the gain on fair value remeasurement of contingent consideration.
We expect investment and other income to increase over the next twelve months due to higher interest rates and higher levels of cash as a result of our November 2023 underwritten public offering, although there may be fluctuations on a quarterly basis. 66 Table of Contents Year Ended December 31, 2022 compared with Year Ended December 31, 2021 Year Ended Increase/ Increase/ December 31, (Decrease) (Decrease) 2022 2021 $ % (In thousands) Revenues: Product development and licensing agreements $ 56 $ 31 $ 25 81 % Contracts and grants 2,301 4,620 (2,319) (50) % Total revenues $ 2,357 $ 4,651 $ (2,294) (49) % Operating expenses: Research and development 82,258 53,311 28,947 54 % General and administrative 27,195 20,488 6,707 33 % Intangible asset impairment — 3,500 (3,500) (100) % Gain on fair value remeasurement of contingent consideration (6,862) (1,405) 5,457 388 % Litigation settlement related loss 15,000 — 15,000 n/a Total operating expenses 117,591 75,894 41,697 55 % Operating loss (115,234) (71,243) 43,991 62 % Investment and other income, net 2,909 505 2,404 476 % Net loss before income tax benefit (112,325) (70,738) 41,587 59 % Income tax benefit — 227 (227) (100) % Net loss $ (112,325) $ (70,511) $ 41,814 59 % Net Loss The $41.8 million increase in net loss for the year ended December 31, 2022, as compared to the year ended December 31, 2021, was primarily due to the $15.0 million litigation settlement related loss recorded in the second quarter of 2022 and increases in research and development and general and administrative expenses, partially offset by an increase in the gain on fair value remeasurement of contingent consideration.
We have had recurring losses and incurred a loss of $112.3 million for the year ended December 31, 2022. Net cash used in operations for the year ended December 31, 2022 was $103.7 million.
We have had recurring losses and incurred a loss of $141.4 million for the year ended December 31, 2023. Net cash used in operations for the year ended December 31, 2023 was $107.3 million.
Net cash provided by financing activities was $272.4 million for the year ended December 31, 2021 compared to $171.2 million for the year ended December 31, 2020. The increase in net cash provided by financing activities was primarily due to an increase in net proceeds from stock issuances.
Financing Activities Net cash provided by financing activities was $218.5 million for the year ended December 31, 2023 compared to $4.1 million for the year ended December 31, 2022. The increase in net cash provided by financing activities was primarily due to an increase in net proceeds from stock issuances.
If we are unable to raise the funds necessary to meet our long-term liquidity needs, we may have to delay or discontinue the development of one or more programs, discontinue or delay ongoing or anticipated clinical trials, discontinue or delay our commercial manufacturing efforts, discontinue or delay our efforts to expand into additional indications for our drug product candidates, license out programs earlier than expected, raise funds at a significant discount or on other unfavorable terms, if at all, or sell all or a part of our business. 65 Table of Contents Operating Activities Net cash used in operating activities was $103.7 million for the year ended December 31, 2022 compared to $60.9 million for the year ended December 31, 2021.
If we are unable to raise the funds necessary to meet our long-term liquidity needs, we may have to delay or discontinue the development of one or more programs, discontinue or delay ongoing or anticipated clinical trials, discontinue or delay our commercial manufacturing efforts, discontinue or delay our efforts to expand into additional indications for our drug product candidates, license out programs earlier than expected, raise funds at a significant discount or on other unfavorable terms, if at all, or sell all or a part of our business.
Prurigo Nodularis (PN) We have expanded clinical development of barzolvolimab into prurigo nodularis (PN). PN is a chronic skin disease characterized by the development of hard, intensely itchy (pruritic) nodules on the skin.
Data from this study are expected in the second half of 2024. Prurigo Nodularis (PN) We have expanded clinical development of barzolvolimab into prurigo nodularis (PN). PN is a chronic skin disease characterized by the development of hard, intensely itchy (pruritic) nodules on the skin.
A complete response was achieved in 95% (n = 19/20) of patients (n = 10/10 ColdU; n = 9/10 SD). The median duration (range) of complete response through the 12-week observation period was 77+ days (29–86; n = 10) for patients with ColdU and 57+ days (16–70; n = 9) for patients with SD.
The median duration (range) of complete response through the 12-week observation period was 77+ days (29–86; n=10) for patients with ColdU and 57+ days (16–70; n=9) for patients with SD. A UCT score of ≥12 (well controlled) was achieved by 80% (n=16/20) of the patients within week 4 post-treatment.
The $6.0 million increase in product development expenses for the year ended December 31, 2021, as compared to the year ended December 31, 2020, was primarily due to an increase in barzolvolimab clinical trial and contract research expenses.
The $27.2 million increase in product development expenses for the year ended December 31, 2023, as compared to the year ended December 31, 2022, was primarily due to an increase in barzolvolimab clinical trial and contract manufacturing expenses.
We believe that by targeting KIT, barzolvolimab may be able to inhibit mast cell activity and decrease mast cell numbers to provide potential clinical benefit in mast cell related diseases.
By targeting KIT, barzolvolimab has been shown to inhibit mast cell activity and decrease mast cell numbers, which we believe could provide potential clinical benefit in mast cell related diseases.
This study is an open label clinical trial designed to evaluate the safety of a single dose (3 mg/kg) of barzolvolimab in patients with cold urticaria (ColdU) or symptomatic dermographism (SD).
We completed a Phase 1b open label clinical trial in CIndU in patients refractory to antihistamines, conducted in Germany. This study was designed to evaluate the safety of a single intravenous dose (3 mg/kg) of barzolvolimab in patients with cold urticaria (ColdU) or symptomatic dermographism (SD).
The amounts disclosed in the following table reflect direct research and development costs, license fees associated with the underlying technology and an allocation of indirect research and development costs to each program. Year Ended Year Ended Year Ended December 31, 2022 December 31, 2021 December 31, 2020 (In thousands) Barzolvolimab/Anti-KIT Program $ 51,220 $ 24,395 $ 8,444 CDX-585 9,793 7,133 — CDX-527 2,012 3,619 8,840 CDX-1140 and CDX-301 3,992 5,439 10,948 Other Programs 15,241 12,725 14,302 Total R&D Expense $ 82,258 $ 53,311 $ 42,534 51 Table of Contents Clinical Development Programs Barzolvolimab (also referred to as CDX-0159) Barzolvolimab is a humanized monoclonal antibody that specifically binds the receptor tyrosine kinase KIT and potently inhibits its activity.
The amounts disclosed in the following table reflect direct research and development costs, license fees associated with the underlying technology and an allocation of indirect research and development costs to each program. Year Ended Year Ended Year Ended December 31, 2023 December 31, 2022 December 31, 2021 (In thousands) Barzolvolimab/Anti-KIT Program $ 79,913 $ 51,220 $ 24,395 CDX-585 6,357 9,793 7,133 Other Programs 31,741 21,245 21,783 Total R&D Expense $ 118,011 $ 82,258 $ 53,311 Clinical Development Programs Barzolvolimab (also referred to as CDX-0159) Barzolvolimab is a humanized monoclonal antibody that specifically binds the receptor tyrosine kinase KIT and potently inhibits its activity.
Data were collected at one or more timepoints beyond week 12 through week 36. ● Most patients had return of symptoms and/or loss of urticaria control between 12 and 36 weeks.
Data were collected at one or more timepoints beyond week 12 through week 36. Most patients had return of symptoms and/or loss of urticaria control between 12 and 36 weeks. Remarkably, two patients remained provocation negative at 36 weeks, and four had well controlled disease (UCT ≥12) 36 weeks post dosing.
Approximately 168 patients will be randomly assigned on a 1:1:1:1 ratio to receive subcutaneous injections of barzolvolimab at 75 mg every 4 weeks, 150 mg every 4 weeks, 300 mg every 8 weeks or placebo during a 16-week placebo-controlled treatment phase.
In the revised protocol, patients will be randomly assigned on a 1:1 ratio to receive subcutaneous injections of barzolvolimab at 300 mg every 4 weeks or placebo during a 16-week placebo-controlled treatment phase. Patients then enter a 12-week active treatment phase, in which all patients will receive barzolvolimab 300 mg every 4 weeks.
Patients will then enter a 36-week active treatment phase, in which patients not already randomized to barzolvolimab at 150 mg every 4 weeks or 300 mg every 8 weeks will be randomized 1:1 to receive one of these two dose regimens; patients already randomized to these treatment arms will remain on the same regimen as during the placebo-controlled treatment phase.
After 16 weeks, patients then enter a 36-week active treatment period, in which patients receiving placebo or the 75 mg dose are randomized to receive barzolvolimab 150 mg every 4 weeks or 300 mg every 8 weeks; patients already randomized to the 150 mg and 300 mg treatment arms remain on the same regimen as during the placebo-controlled treatment period.
In December 2022, we presented long term follow up data from the 3.0 mg/kg cohorts in cold urticaria and symptomatic dermographism at the GA²LEN Global Urticaria Forum (GUF) 2022. 14 patients consented to the optional long term follow up evaluation (6 cold, 8 symptomatic dermographism); 10 of the 14 still had complete control of their disease as assessed by provocation testing at week 12.
Mild, transient, and asymptomatic decreases in hemoglobin and white blood cell parameters occurred for some patients. ● Long term follow up data was collected from the 3.0 mg/kg cohorts in cold urticaria and symptomatic dermographism. 14 patients consented to the optional evaluation (6 cold, 8 symptomatic dermographism); 10 of the 14 still had complete control of their disease as assessed by provocation testing at week 12.
Industry sources estimate there are approximately 154,000 patients in the United States with PN who have undergone treatment within the last 12 months and, of these, approximately 75,000 would be biologic-eligible.
Industry 59 Table of Contents sources estimate there are approximately 154,000 patients in the United States with PN who have undergone treatment within the last 12 months and, of these, approximately 75,000 would be biologic-eligible. We have completed a Phase 1b multi-center, randomized, double-blind, placebo-controlled intravenous study in PN.
In March and June 2021, respectively, we added a third cohort (single dose, 3 mg/kg) in patients with cholinergic urticaria and a fourth cohort at a lower dose (single dose, 1.5 mg/kg) in ColdU. Patient’s symptoms are induced via provocation testing that resembles real life triggering situations.
The study was expanded to include a cohort (single dose, 3 mg/kg) in patients with cholinergic urticaria (“CholU”) and a cohort at a lower dose (single dose, 1.5 mg/kg) in ColdU. Patient’s symptoms were induced via provocation testing that resembles real life triggering situations.
We expect the final histologic analysis and study report in early 2023. We are encouraged with these findings and believe these data strongly support our Phase 2 studies in urticaria and in future indications. Bispecific Platform Our next generation bispecific antibody platform is supporting the expansion of our pipeline with additional candidates for inflammatory diseases and oncology.
We are encouraged with these findings and believe these data strongly support continued development of barzolvolimab. Bispecific Platform Our next generation bispecific antibody platform is supporting the expansion of our pipeline with additional candidates for inflammatory diseases and oncology.
Following the treatment period, patients will enter a 24-week follow up phase. The primary endpoint of the study is mean change in baseline to week 12 in UAS7 (Urticaria Activity Score over 7 days).
After 52 weeks, patients then enter a follow-up period for an additional 24 weeks. The primary endpoint of the study is mean change in baseline to week 12 in UAS7 (weekly urticaria activity score).
Tissue KIT signaling, as approximated by SCF levels, was rapidly inhibited after dose administration and fully reactivated approximately 18 weeks after dosing. ● Tryptase levels return to pretreatment levels during follow up, while mast cells continue to recover. Drug related adverse events noted during the study all resolved.
Serum tryptase exhibits a similar rate of recovery as clinical symptoms, while skin mast cells return at a slower rate. Tissue KIT signaling, as approximated by SCF levels, was rapidly inhibited after dose administration and fully reactivated approximately 18 weeks after dosing. Tryptase levels return to pretreatment levels during follow up, while mast cells continue to recover.
Due to the very high concentrations of barzolvolimab at the end of dosing, the recovery period was approximately one year. As we expected, and consistent with previous findings with KIT blocking antibodies, we were pleased to report in December 2022, that during this recovery period spermatogenesis fully recovered in all male animals as measured by both sperm count and motility.
As we expected, and consistent with previous findings with KIT blocking antibodies, we were pleased to report in December 2022, that during this recovery period spermatogenesis fully recovered in all male animals as measured by both sperm count and motility. The final histologic analysis and study report were completed in early 2023 and were consistent with previously reported results.
The increase in net cash used in investing activities was primarily due to net purchases of marketable securities for the year ended December 31, 2021 of $214.9 million as compared to $96.7 million for the year ended December 31, 2020.
The increase in net cash used in investing activities was primarily due to net purchases of marketable securities of $104.0 million for the year ended December 31, 2023 as compared to net 69 Table of Contents sales and maturities of marketable securities of $91.7 million for the year ended December 31, 2022.
Product development expenses include clinical investigator site fees, external trial monitoring costs, data accumulation costs, contracted research and outside clinical drug product manufacturing.
Facility expenses for the year ended December 31, 2022 were relatively consistent with the year ended December 31, 2021. Product development expenses include clinical investigator site fees, external trial monitoring costs, data accumulation costs, contracted research and outside clinical drug product manufacturing.
Hair color changes (generally small areas of hair color lightening) and taste disorders (generally partial changes of ability to taste salt or umami) are consistent with inhibiting KIT signaling in other cell types and completely resolved over time during follow-up. Infusion reactions, which manifested as localized hives and itching as well as erythema and feeling hot, resolved spontaneously.
Hair color changes (generally small areas of hair color lightening) and taste disorders (generally partial changes of ability to taste salt or umami) are consistent with inhibiting KIT signaling in other cell types and completely resolved over time during follow-up. One patient with a history of fainting experienced loss of consciousness during infusion. The patient rapidly recovered.
We are focusing our efforts and resources on the continued research and development of ● Barzolvolimab (also referred to as CDX-0159), a monoclonal antibody that specifically binds the KIT receptor and potently inhibits its activity, which is currently being studied across multiple mast cell driven diseases including - Chronic Urticarias: In June and July 2022 respectively, we announced that enrollment had opened and the first patients had been dosed in Phase 2 studies in chronic spontaneous urticaria (CSU) and chronic inducible urticaria (CIndU).
We are focusing our efforts and resources on the continued research and development of ● Barzolvolimab (also referred to as CDX-0159), a monoclonal antibody that specifically binds the KIT receptor and potently inhibits its activity, which is currently being studied across multiple mast cell driven diseases including - Chronic Urticarias: In November 2023, we announced that our Phase 2 study in chronic spontaneous urticaria (CSU) achieved the primary efficacy endpoint (statistically significant mean change from baseline to week 12 of urticaria activity score compared to placebo) and was well tolerated.
General and Administrative Expense The $6.0 million increase in general and administrative expenses for the year ended December 31, 2021, as compared to the year ended December 31, 2020, was primarily due to higher stock-based compensation and legal expenses.
General and Administrative Expense The $3.7 million increase in general and administrative expenses for the year ended December 31, 2023, as compared to the year ended December 31, 2022, was primarily due to higher stock-based compensation, recruiting and barzolvolimab commercial planning expenses, partially offset by a decrease in legal expenses.
These data supported expansion of the barzolvolimab program into mast cell driven diseases, including initially in CSU and CIndU, diseases where mast cell degranulation plays a central role in the onset and progression of the disease. Phase 1 studies in CSU and CIndU are completing and Phase 2 studies are ongoing.
Barzolvolimab was initially studied in chronic spontaneous urticaria (CSU) and chronic inducible urticaria (CIndU), diseases where mast cell degranulation plays a central role in the onset and progression of the disease. Phase 1 studies in CSU and CIndU were successfully completed and Phase 2 studies are ongoing.
Omalizumab, an IgE inhibitor, provides relief for roughly half of the remaining antihistamine refractory patients. Consequently, there is a need for additional therapies. In October 2020, we announced that enrollment had opened and the first patient had been dosed in a Phase 1b multi-center study of barzolvolimab in CSU.
Omalizumab, an IgE inhibitor, provides relief for roughly half of the remaining antihistamine refractory patients. Consequently, there is a need for additional therapies. 55 Table of Contents We have completed a Phase 1b randomized, double-blind, placebo-controlled multi-center study of barzolvolimab in CSU.
Most AEs were mild or moderate in severity and resolved while on study. The most common treatment emergent adverse events were hair color changes, COVID-19, headache, neutropenia and urinary tract infections (UTIs). UTIs and COVID-19 were reported as unrelated to treatment. There was one serious adverse event of salmonella gastroenteritis which was also not related to study therapy.
Most AEs were mild or moderate in severity and resolved while on study. The most common treatment emergent adverse events were hair color changes, COVID-19, headache, neutropenia and urinary tract infections (UTIs). UTIs and COVID-19 were reported as unrelated to treatment. Generally transient, asymptomatic and mild changes in hematologic parameters were observed, consistent with observations from prior studies.
Eosinophilic Esophagitis (EoE) In February 2022, we announced that we will be expanding clinical development of barzolvolimab into eosinophilic esophagitis (EoE), the most common type of eosinophilic gastrointestinal disease. EoE is a chronic inflammatory disease of the esophagus characterized by the infiltration of eosinophils.
Eosinophilic Esophagitis (EoE) In July of 2023, we announced that the first patient had been dosed in a Phase 2 study of eosinophilic esophagitis (EoE). EoE, the most common type of eosinophilic gastrointestinal disease, is a chronic inflammatory disease of the esophagus characterized by the infiltration of eosinophils.
As of the data cut-off date on November 29, 2022, enrollment was complete with 45 patients with moderate to severe CSU refractory to antihistamines enrolled and treated [35 barzolvolimab (n=9 in 0.5 mg/kg; n=8 in 1.5 mg/kg; n=9 in 3.0 mg/kg; n=9 in 4.5 mg/kg) and 10 placebo].
Barzolvolimab was administered intravenously as add on treatment to H1-antihistamines, either alone or in combination with H2-antihistamines and/or leukotriene receptor agonists. 45 patients with moderate to severe CSU refractory to antihistamines were enrolled and treated [35 barzolvolimab (n=9 in 0.5 mg/kg; n=8 in 1.5 mg/kg; n=9 in 3.0 mg/kg; n=9 in 4.5 mg/kg) and 10 placebo].
In November 2022, data from the ColdU and SD cohorts treated with a single intravenous infusion of barzolvolimab at 3 mg/kg were published in Allergy (Terhorst-Molawi et al Allergy. 2022 Nov 16. doi: 10.1111/all.15585). Safety results were reported for 21 patients; activity results were reported for the 20 patients who received a full dose of barzolvolimab.
At 3 mg/kg in the ColdU and SD cohorts, safety results were reported for 21 patients and activity results were reported for the 20 patients who received a full dose of barzolvolimab.
Net cash used in investing activities was $216.2 million for the year ended December 31, 2021 compared to $98.2 million for the year ended December 31, 2020.
Operating Activities Net cash used in operating activities was $107.3 million for the year ended December 31, 2023 compared to $103.7 million for the year ended December 31, 2022.
The only clinically adverse finding at the completion of dosing was a profound impact on spermatogenesis, an expected and well understood effect of KIT inhibition. As a standard part of toxicology studies, some animals from each group continued to be observed through a recovery period to understand the reversibility of any adverse findings.
As a standard part of toxicology studies, some animals from each group continued to be observed through a recovery period to understand the reversibility of any adverse findings. Due to the very high concentrations of barzolvolimab at the end of dosing, the recovery period was approximately one year.
We expect that cash used in operating activities (not including the $15.0 million Initial Payment made to SRS) will increase over the next twelve months as a result of the expanded development of barzolvolimab.
We expect that cash used in operating activities will increase over the next twelve months as a result of the expanded development of barzolvolimab. Net cash used in operating activities was $103.7 million for the year ended December 31, 2022 compared to $60.9 million for the year ended December 31, 2021.
The assumptions related to determining the value of contingent consideration include a significant amount of judgment, and any changes in the underlying estimates could have a material impact on the amount of contingent consideration adjustment recorded in any given period. 58 Table of Contents Revenue Recognition Revenues are recognized when performance obligations under agreements or contracts are satisfied, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those services.
The assumptions related to determining the value of contingent consideration include a significant amount of judgment, and any changes in the underlying estimates could have a material impact on the amount of contingent consideration adjustment recorded in any given period.
Positive interim data from the Phase 1b study in CIndU were reported in July and September 2021 and in December 2022 in patients with cold urticaria and symptomatic dermographism; - Prurigo Nodularis (PN): In December 2021 we announced that the first patient had been dosed in a Phase 1b study in PN; enrollment was closed in February 2023 and we plan to present data from the study in the second half of 2023; - Eosinophilic Esophagitis (EoE): We plan to initiate a Phase 2 study in EoE in the first half of 2023. ● Our next generation bispecific antibody platform to support pipeline expansion with additional candidates for inflammatory diseases and oncology.
A Phase 2 study in chronic inducible urticaria (CIndU) is currently enrolling patients and we expect to report data from this study in the second half of 2024; - Prurigo Nodularis (PN): In November 2023, we reported positive data from a Phase 1b study in PN that supports further development of barzolvolimab in this indication and we are currently planning for the initiation of a Phase 2 study in PN in early 2024; - Eosinophilic Esophagitis (EoE): A Phase 2 study in EoE was initiated in June 2023 and enrollment is ongoing. ● Our next generation bispecific antibody platform to support pipeline expansion with additional candidates for inflammatory diseases and oncology.
CDX-585 will initially be developed for the treatment of solid tumors either as monotherapy or in combination with other oncologic treatments and is expected to enter the clinic in 2023 in patients with advanced malignancies.
CDX-585 will initially be developed for the treatment of solid tumors either as monotherapy or in combination with other oncologic treatments. In late May 2023, we announced that the first patient had been dosed in the Phase 1 study of CDX-585.
Secondary and exploratory objectives include pharmacokinetic and pharmacodynamic assessments, including changes from baseline provocation thresholds, measurement of tryptase and stem cell factor levels, clinical activity outcomes (impact on urticaria symptoms, disease control, clinical response), quality of life assessments and measurement of tissue mast cells through skin biopsies. Barzolvolimab is administered intravenously on Day 1 as add on treatment to H1-antihistamines.
Secondary and exploratory objectives included pharmacokinetic and pharmacodynamic assessments, including changes from baseline provocation thresholds, measurement of tryptase and stem cell factor levels, clinical activity outcomes, quality of life assessments and measurement of tissue mast cells through skin biopsies. Generally patients on study had high disease activity at baseline that was poorly controlled and marked impairment in quality of life.
We expect product development expenses to increase over the next twelve months as a result of further increases in barzolvolimab clinical trial and contract manufacturing expenses.
We expect product development expenses to increase over the next twelve months as a result of the expanded development of barzolvolimab, although there may be fluctuations on a quarterly basis.
The study is being conducted at approximately 75 sites across 9 countries. The study is a randomized, double-blind, placebo-controlled, parallel group Phase 2 study evaluating the efficacy and safety profile of multiple dose regimens of barzolvolimab to determine the optimal dosing strategy.
The study is a randomized, double-blind, placebo-controlled, parallel group Phase 2 study evaluating the efficacy and safety profile of multiple dose regimens of barzolvolimab to determine the optimal dosing strategy. 208 patients have been randomly assigned on a 1:1:1:1 ratio to receive subcutaneous injections of barzolvolimab at 75 mg every 4 weeks, 150 mg every 4 weeks, 300 mg every 8 weeks or placebo during a 16-week placebo-controlled treatment phase.
Product development expenses include clinical investigator site fees, external trial monitoring costs, data accumulation costs, contracted research and outside clinical drug product manufacturing.
We expect facility expenses to remain relatively consistent over the next twelve months, although there may be fluctuations on a quarterly basis. Product development expenses include clinical investigator site fees, external trial monitoring costs, data accumulation costs, contracted research and outside clinical drug product manufacturing.
This study is a randomized, double-blind, placebo- controlled clinical trial designed to assess the safety of multiple ascending doses of barzolvolimab in up to 40 patients with CSU who remain symptomatic despite treatment with antihistamines.
The study was designed to assess the safety of multiple ascending doses of barzolvolimab in patients with CSU who remain symptomatic despite treatment with antihistamines. Secondary and exploratory objectives included pharmacokinetic and pharmacodynamic assessments, clinical activity outcomes and quality of life assessments.
Net cash used in operating activities was $60.9 million for the year ended December 31, 2021 compared to $40.4 million for the year ended December 31, 2020. The increase in net cash used in operating activities was primarily due to increases in research and development and general and administrative expenses and a decrease in revenue.
The increase in net cash used in operating activities was primarily due to increases in research and development and general and administrative expenses, partially offset by an increase in revenue and a decrease in payments made under the Settlement Agreement with SRS.
Complete urticaria control (UCT = 16) was achieved by 35% (n = 7/20), 65% (n = 13/20), and 40% (n = 8/20) at weeks 4, 8, and 12, respectively. 54 Table of Contents ● At baseline, patients in both treatment groups reported disease impact on their QoL.
Complete urticaria control (UCT=16) was achieved by 35% (n=7/20), 65% (n=13/20), and 40% (n=8/20) at weeks 4, 8, and 12, respectively. ● A complete response was achieved in 100% (n=9 of 9) patients with ColdU treated with a single dose at 1.5 mg/kg, including 4 patients with disease refractory to omalizumab.
We expect investment and other income to increase over the next twelve months primarily due to higher interest rates and higher other income related to our sale of New Jersey tax benefits. 62 Table of Contents Income Tax Benefit A $0.2 million non-cash income tax benefit was recorded for the year ended December 31, 2021 related to the impairment of the TAM program IPR&D asset in the third quarter of 2021.
Investment and Other Income, Net The $10.2 million increase in investment and other income, net for the year ended December 31, 2023, as compared to the year ended December 31, 2022, was primarily due to higher interest rates on fixed income investments and higher other income related to our sale of New Jersey tax benefits.
Phase 1 studies of barzolvolimab have been conducted with an intravenous formulation; a subcutaneous formulation has been successfully developed and is being used in Phase 2 studies. Chronic Spontaneous Urticaria (CSU) CSU presents as itchy hives, angioedema or both for at least six weeks without a specific trigger; multiple episodes can play out over years or even decades.
We continue to assess potential opportunities for barzolvolimab in other diseases where mast cells play an important role, such as dermatologic, respiratory, allergic, gastrointestinal and ophthalmic conditions. Chronic Spontaneous Urticaria (CSU) CSU presents as itchy hives, angioedema or both for at least six weeks without a specific trigger; multiple episodes can play out over years or even decades.
We expect general and administrative expenses to remain relatively consistent over the next twelve months, although there may be fluctuations on a quarterly basis. Intangible Asset Impairment During the third quarter of 2021, we evaluated the TAM program IPR&D asset for potential impairment as a result of a lack of interest in the program from third parties.
We expect general and administrative expenses to increase over the next twelve months as a result of the expanded development of barzolvolimab and an increase in commercial planning efforts, although there may be fluctuations on a quarterly basis.
Facility expenses include depreciation, amortization, utilities, rent, maintenance and other related expenses incurred at our facilities. Facility expenses for the year ended December 31, 2022 were relatively consistent with the year ended December 31, 2021. We expect facility expenses to remain relatively consistent over the next twelve months, although there may be fluctuations on a quarterly basis.
We expect revenue to remain relatively consistent over the next twelve months, although there may be fluctuations on a quarterly basis.
This could be impacted if we elect to pay the future milestones under the Settlement Agreement with SRS, if any, in cash.
We believe that the cash, cash equivalents and marketable securities at December 31, 2023 are sufficient to meet estimated working capital requirements and fund current planned operations into 2026. This could be impacted if we elect to pay the future milestone under the Settlement Agreement with SRS, if any, in cash.