Vaidyanathan A, Vana P, Joshi N, Sourav B, Bhargava P, John G, Ramaswamy A, Ostwal V. Real-World Evidence for Comparative Outcomes between Innovator and Biosimilar Bevacizumab in Advanced Colorectal Cancers.
South Asian J Cancer 2024;
13:296-299. [PMID:
40060339 PMCID:
PMC11888807 DOI:
10.1055/s-0045-1804535]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2024] [Accepted: 01/28/2025] [Indexed: 04/03/2025] [Imported: 04/03/2025] Open
Abstract
PURPOSE
Generic versions of bevacizumab are commonly used in India in patients with advanced/metastatic colorectal cancers (mCRCs), but there is limited real-world evidence (RWE) about their efficacy in comparison to the innovator bevacizumab.
METHODS
Patients diagnosed with mCRC between January 2017 and January 2022 and receiving a combination of chemotherapy and bevacizumab were retrospectively analyzed for demographic variables and survivals. The primary endpoint of the study was the estimation and comparison of median progression-free survival (mPFS) between patients receiving innovator versus generic bevacizumab as first-line therapy (CT1) by the Kaplan-Meier method.
RESULTS
A total of 944 patients were included in the analysis, of whom 652 patients (69%) received bevacizumab as CT1, 449 patients (48%) during second-line chemotherapy (CT2), and 74 patients (8%) during third-line therapy (CT3). The innovator was administered to 132 patients (14%), while the remaining 812 patients (86%) received a generic molecule. With a median follow-up of 18 months, there was no difference in mPFS between patients receiving the innovator or biosimilar (10 vs. 9.3 months, p = 0.62). Similarly, there was no difference in median overall survival (mOS) between patients receiving the innovator or biosimilar during CT1 (17.8 vs. 18 months, p = 0.85). Among the patients who received bevacizumab during CT2, there was no statistically significant difference in mPFS between the innovator and the biosimilar (5.5 vs. 5.8 months, p = 0.97), nor was there a difference in mOS between patients receiving the innovator or biosimilar during CT2 (8.15 vs. 8.58 months, p = 0.16).
CONCLUSION
The current study offers RWE to suggest similar outcomes with innovator and generic bevacizumab when combined with chemotherapy in mCRCs. This has significant implications in India and other low- and middle-income countries besides providing oncologists with greater confidence to use these molecules in their clinical practice.
Collapse