Celator Pharmaceuticals, Inc. announced positive results from the Phase 3 trial of VYXEOS™ (cytarabine: daunorubicin) Liposome for Injection (also known as CPX-351) in patients with high-risk (secondary) acute myeloid leukemia (AML) compared to the standard of care regimen of cytarabine and daunorubicin known as 7+3. The trial met its primary endpoint demonstrating a statistically significant improvement in overall survival. Data will be submitted for presentation at the American Society of Clinical Oncology 2016 Annual Meeting.
The median overall survival for patients treated with VYXEOS in the study was 9.56 months compared to 5.95 months for patients receiving 7+3, representing a 3.61 month improvement in favor of VYXEOS. The hazard ratio (HR) was 0.69 (p=0.005) which represents a 31 percent reduction in the risk of death versus 7+3. The percentage of patients alive 12 months after randomization was 41.5% on the VYXEOS arm compared to 27.6% on the 7+3 arm. The percentage of patients alive 24 months after randomization was 31.1% on the VYXEOS arm compared to 12.3% on the 7+3 arm.
VYXEOS also demonstrated a statistically significant improvement in induction response rate (CR+CRi of 47.7% versus 33.3%; p=0.016) and this significance was maintained for the analysis of CR alone (CR of 37.3% versus 25.6%, p=0.040).
Based on these results the company expects to submit a New Drug Application (NDA) for VYXEOS with the U.S. Food and Drug Administration (FDA) later this year and submit a Marketing Authorization Application (MAA) with the European Medicines Agency (EMA) in the first quarter of 2017.
