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Oncolytics Biotech® Announces Positive Randomized Phase 2 Data from BRACELET-1 Metastatic Breast Cancer Trial Demonstrating Pelareorep Drives ≥50% Improvements in ORR and mPFS in an ASCO Annual Meeting Abstract
31% week-16 overall response rate and 9.6-month median progression-free survival with pelareorep plus paclitaxel vs. 20% and 6.4 months with paclitaxel alone
About this update from Oncolytics Biotech Inc.
[{"type":"text","content":"31% week-16 overall response rate and 9.6-month median progression-free survival with pelareorep plus paclitaxel vs. 20% and 6.4 months with paclitaxel alone as of Oct. 2022 ASCO abstract cut-off date\nUpdated data from May 2023 cut-off date will be presented in an oral presentation on June 3, 2023\nOncolytics to advance to registrational study of pelareorep-paclitaxel combination in HR+/HER2- breast cancer\nSAN DIEGO, and CALGARY, AB , May 25, 2023 /PRNewswire/ -- Oncolytics Biotech® Inc. (NASDAQ: ONCY) (TSX: ONC) today announced positive results from BRACELET-1, a randomized phase 2 trial in HR+/HER2- metastatic breast cancer. The results are published in an abstract accepted for an oral presentation at the upcoming American Society of Clinical Oncology (ASCO) Annual Meeting, taking place from June 2 – 6, 2023 in Chicago, Illinois and online. The abstract is available on the ASCO Annual Meeting website.\n \nBRACELET-1 enrolled 48 patients randomized and well-balanced across three cohorts evaluating: (1) paclitaxel monotherapy; (2) paclitaxel in combination with pelareorep; and (3) paclitaxel plus pelareorep in combination with the anti-PD-L1 checkpoint inhibitor, avelumab (Bavencio®). All participants enrolled in the trial previously progressed on at least one hormone-based therapy with a CDK 4/6 inhibitor.\nCompared to the paclitaxel monotherapy cohort, the cohort evaluating the combination of paclitaxel plus pelareorep showed ≥50% improvements on the trial's primary endpoint of overall response rate (ORR) at week 16 (31.3% vs. 20%) as of the ASCO abstract cut-off date (October 2022). This cohort also reported median progression-free survival (mPFS) of 9.6 months vs. 6.4 months as of the cut-off date. Overall survival data from the trial continue to mature. Data from this study validate the results of IND-213, a prior phase 2 trial that showed a statistically significant near doubling of median overall survival in HR+/HER2- metastatic breast cancer patients treated with pelareorep combined with paclitaxel (21.0 months, n = 28) vs. those treated with paclitaxel alone (10.8 months, n = 29).\n\"BRACELET-1 substantially de-risks our HR+/HER2- breast cancer program by providing a second randomized dataset showing pelareorep plus paclitaxel outperforming paclitaxel alone,\" said Dr. Matt Coffey, President and Chief Executive Office...