Benzinga | Sep 13, 2021 05:10AM EDT

BeiGene Announced FDA Acceptance of Biologics License Application for Tislelizumab, Filed in Collaboration with Novartis, in Esophageal Squamous Cell Carcinoma

BeiGene, Ltd. (NASDAQ:BGNE) today announced that the U.S. Food and Drug Administration (FDA) accepted for review a Biologics License Application (BLA) for its anti-PD-1 antibody tislelizumab as a treatment for patients with unresectable recurrent locally advanced or metastatic esophageal squamous cell carcinoma (ESCC) after prior systemic therapy. The Prescription Drug User Fee Act (PDUFA) target action date is July 12, 2022.

"Our uniquely designed anti-PD-1 antibody tislelizumab has been shown to significantly improve survival compared to chemotherapy for people with a variety of solid tumors and hematologic malignancies. We previously shared the compelling results at ASCO 2021 with tislelizumab significantly prolonging survival and demonstrating a favorable safety profile over chemotherapy in patients with locally advanced or metastatic ESCC, a devastating disease with an average five-year survival rate of just five percent. This BLA acceptance brings us closer to potentially providing tislelizumab as a treatment for these patients in the United States," said Yong (Ben) Ben, M.D., Chief Medical Officer, Immuno-Oncology at BeiGene. "Tislelizumab is already approved in five indications in China and has the potential to become a preferred immunotherapy option there. We look forward to continued collaboration with Novartis to work to bring access to tislelizumab to patients around the world."

The BLA submission is based on results from RATIONALE 302, a randomized, open-label, multicenter global Phase 3 trial (NCT03430843) designed to evaluate the efficacy and safety of tislelizumab when compared to investigator's choice chemotherapy as a second-line treatment for patients with advanced or metastatic ESCC. Results of this trial were presented at the 2021 American Society of Clinical Oncology Annual Meeting (ASCO 2021). The submission also included safety data on 1,972 patients who received tislelizumab as a monotherapy from seven clinical trials.

In addition to the United States, tislelizumab is also under regulatory review in China as a treatment for patients with locally advanced or metastatic ESCC who have disease progression following or are intolerant to first-line standard chemotherapy.