更新于：2024-11-04
Coherus BioSciences, Inc.
更新于：2024-11-04
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A Phase 1B, Multicenter, Open-Label Study of the Safety and Efficacy of CHS-114 in Combination With Toripalimab With or Without Other Treatments in Participants With Advanced or Metastatic Solid Tumors
A Phase 1, Multicenter, Open-Label Study of CHS-1000 as a Single Agent and in Combination With Toripalimab-tpzi in Participants With Advanced or Metastatic Solid Tumors
A Combination Therapy Strategy to Prevent Anti-PD-1 Therapy Resistance in Metastatic Ovarian Cancer Patients
100 项与 Coherus BioSciences, Inc. 相关的临床结果
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2024-06-01DRUGS IN R&D
Demonstration of Physicochemical and Functional Similarity of Biosimilar Pegfilgrastim-cbqv to Pegfilgrastim
Article
作者: Davis, Janice M ; Valentine, Elizabeth ; Merewether, LeeAnne ; McQueen, Matthew ; Andrews, Benjamin T ; Miller, Karen J ; Young, Glen ; Diaz, Dimitri ; Kuehne, Henriette
BACKGROUND:
Pegfilgrastim-cbqv/CHS-1701 (UDENYCA®) (hereafter referred to as pegfilgrastim-cbqv) was approved in 2018 by the US Food and Drug Administration as a biosimilar for pegfilgrastim (Neulasta®) (hereafter referred to as pegfilgrastim). Both pegfilgrastim-cbqv and pegfilgrastim are conjugates of recombinant human granulocyte colony stimulating factor (r-metHuG-CSF) with a 20 kDa polyethylene glycol (PEG) indicated to decrease the incidence of infection, as manifested by febrile neutropenia, in patients receiving myelosuppressive anticancer drugs. The demonstration of analytical similarity for PEG-protein conjugates presents unique challenges since both the protein and PEG attributes must be characterized.
OBJECTIVE:
The current study demonstrates the analytical similarity of pegfilgrastim-cbqv and the reference product, pegfilgrastim. In addition to the physicochemical and functional characterization of the protein, the study assessed attributes specific to PEGylation including PEG size and polydispersity, site of attachment, linker composition, and PEGylation process-related variants.
METHODS:
The structural, functional, and stability attributes of pegfilgrastim-cbqv and pegfilgrastim were compared using state-of-the-art analytical methods. For the protein, the primary structure, disulfide structure, and secondary and tertiary structures were assessed using traditional protein characterization techniques such as mass spectrometry (MS), circular dichroism (CD), intrinsic fluorescence, and differential scanning calorimetry (DSC), as well as more advanced techniques such as two-dimensional (2D) nuclear magnetic resonance (NMR) and hydrogen deuterium exchange (HDX). For the PEG moiety, the site of attachment, occupancy, linker composition, size and polydispersity were compared using mass spectrometry (both intact and after endoprotease digestion), multiangle light scattering detection (MALS), and Edman degradation. Purity assessments included the assessment of both protein variants and PEGylation variants using chromatographic and electrophoretic analytical separation techniques. The functional similarity between pegfilgrastim-cbqv and pegfilgrastim was compared using both a cell-based bioassay and surface plasmon resonance (SPR). The degradation rates and stability profiles were compared under accelerated and stressed conditions.
RESULTS:
Biosimilarity was demonstrated by a thorough assessment of physiochemical and functional attributes, as well as comparative stability, of pegfilgrastim-cbqv relative to pegfilgrastim. These studies demonstrated identical primary structure and disulfide structure, highly similar secondary and tertiary structure, as well as functional similarity. The impurity profile of pegfilgrastim-cbqv was comparable to that of pegfilgrastim with only minor differences in PEGylation variants and a slight offset in the PEG molar mass. These differences were not clinically relevant. The degradation profiles were qualitatively and quantitatively similar under accelerated and stress conditions.
CONCLUSION:
The structural, functional, and stability data demonstrate that pegfilgrastim-cbqv is highly similar to the reference product, pegfilgrastim.
2024-04-01Journal of medical economics
Cost-efficiency and budget-neutral expanded access modeling of the novel PD-1 inhibitor toripalimab versus pembrolizumab in recurrent or metastatic nasopharyngeal carcinoma
Article
作者: MacDonald, Karen ; Pondel, Marc ; Abraham, Ivo
AIMS:
To estimate, in the setting of recurrent or metastatic nasopharyngeal carcinoma (R/M NPC) for an assumed 1,207 incident US cases in 2024, (1) the cost-efficiency of a toripalimab-gemcitabine-cisplatin regimen compared to a similar pembrolizumab regimen; and (2) the budget-neutral expanded access to additional toripalimab cycles and regimens afforded by the accrued savings.
METHODS:
Simulation modeling utilized two cost inputs (wholesale acquisition cost (WAC) at market entry and an ex ante toripalimab price point of 80% of pembrolizumab average sales price (ASP)) and drug administration costs over 1 and 2 years of treatment with treatment rates ranging from 45% to 90%. In the absence of trial data for pembrolizumab-gemcitabine-cisplatin in R/M NPC, it is assumed that such a regimen would be comparable to toripalimab-gemcitabine-cisplatin in efficacy and safety.
RESULTS:
In the models utilizing the WAC, toripalimab saves $2,223 per patient per cycle and $40,014 over 1 year of treatment ($77,805 over 2 years). Extrapolated to the 1,207-patient panel, estimated 1-year savings range from $21,733,702 (45% treatment rate) to $43,467,404 (90% rate). Reallocating these savings permits budget-neutral expanded access to an additional 2,359 (45% rate) to 4,717 (90% rate) toripalimab maintenance cycles or to an additional 126 (45% rate) to 252 (90%) full 1-year toripalimab regimens with all agents. Two-year savings range from $42,259,976 (45% rate) to $84,519,952 (90% rate). Reallocating these efficiencies provides expanded access, ranging from an additional 4,586 (45% rate) to 9,172 (90% rate) toripalimab cycles or to an additional 128-257 full 2-year toripalimab regimens. The ex ante ASP model showed similar results.
CONCLUSION:
This simulation demonstrates that treatment with toripalimab generates savings that enable budget-neutral funding for up to an additional 252 regimens with toripalimab-gemcitabine-cisplatin for one full year, the equivalent of approximately 21% of the 2024 incident cases of R/M NPC in the US.
2024-04-01JOURNAL OF MEDICAL ECONOMICS
Cost-efficiency and budget-neutral expanded access modeling of pembrolizumab versus the novel PD-1 inhibitor toripalimab in locally advanced or metastatic nonsquamous non-small cell lung cancer
Article
作者: MacDonald, Karen ; Pondel, Marc ; Abraham, Ivo
AIMS:
To estimate in a panel of patients with locally advanced/metastatic nonsquamous non-small cell lung cancer (NSCLC) treated with a programmed death receptor-1 inhibitor in the US in 2024 (1) the cost-efficiency of toripalimab regimens compared to pembrolizumab regimens; and (2) the budget-neutral expanded access to additional toripalimab cycles and regimens from accrued savings.
METHODS:
Simulation modeling of toripalimab + pemetrexed + carboplatin in nonsquamous NSCLC to a similar pembrolizumab regimen in a panel of 49,647 patients; utilizing two cost inputs (wholesale acquisition cost (WAC) at market entry and an estimated ex ante toripalimab price point of 80% of pembrolizumab average sales price (ASP)) plus administration costs over one and two years of treatment with treatment rates from 1%-10%. Scenario analyses with treatment durations equivalent to toripalimab and pembrolizumab trials' median PFS were also conducted.
RESULTS:
In the WAC-based models, toripalimab saves $2,223 per patient per cycle and $40,014 over 1 year of treatment ($77,805 over 2 years). Extrapolated to the 49,647-patient panel, estimated 1-year savings range from $19,865,840 (1% treatment rate) to $198,658,399 (10% rate). Reallocating these savings permits budget-neutral expanded access to an additional 1,753 (1% rate) to 17,533 (10% rate) toripalimab maintenance cycles or to an additional 97 (1% rate) to 972 (10%) full 1-year toripalimab regimens with all agents. Two-year savings range from $38,628,022 (1% rate) to $386,280,221 (10%). Reallocating these efficiencies provides expanded access ranging from 3,409 (1% rate) to 34,093 (10%) additional toripalimab cycles or to 97 to 973 full 2-year regimens. The ex ante ASP model showed similar results as did the scenario analyses but at a lower magnitude than the base case.
CONCLUSION:
Toripalimab generates significant savings that enable budget-neutral funding for up to 17,533 [34,093] additional maintenance cycles over one year [two years] with toripalimab + pemetrexed in nonsquamous NSCLC, or 972 [973] full one-year [two-year] regimens.
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