Core Insights - OS Therapies announced statistically significant positive final 2-year overall survival data from the Phase 2b trial of OST-HER2, showing 75% of treated patients achieved 2-year overall survival compared to 40% in historical controls [1][4] - The company is on track to file for conditional marketing authorization in the UK, the US, and the EU, with key regulatory meetings planned for December 2025 [3][6] Group 1: Clinical Trial Results - 75% of OST-HER2 treated patients achieved 2-year overall survival, significantly higher than the 40% in historical controls (p < 0.0001) [1][4] - Subgroup analysis indicated that 100% of patients who achieved 12-month Event Free Survival (EFS) also achieved 2-year overall survival [1][4] Group 2: Regulatory Path and Future Plans - The company plans to submit a conditional Marketing Authorization Application (MAA) to the MHRA in December 2025 and a Biologics Licensing Application (BLA) to the FDA in January 2026 [3][6] - OS Therapies is analyzing patient samples to confirm correlations between clinical outcomes and immune system biomarker activation, with results expected in November 2025 [3] Group 3: Company Overview and Product Pipeline - OS Therapies focuses on developing treatments for Osteosarcoma and other solid tumors, with OST-HER2 as its lead asset, which has received multiple designations from regulatory agencies [6][7] - The company is also advancing its next-generation Antibody Drug Conjugate (ADC) platform, known as tunable ADC (tADC), which utilizes proprietary technology for enhanced treatment delivery [7]
OS Therapies Announces Statistically Significant Positive Final 2-Year Overall Survival Data from Phase 2b Trial of OST-HER2 in the Prevention or Delay of Recurrent, Fully-Resected, Pulmonary Metastatic Osteosarcoma