BeiGene, Ltd. BGNE, +2.65% (hkex:06160), a commercial-stage biopharmaceutical company focused on developing and commercializing innovative molecularly-targeted and immuno-oncology drugs for the treatment of cancer, today announced the acceptance by the China Drug Administration (CDA) of a new drug application (NDA) for zanubrutinib, an investigational Bruton’s tyrosine kinase (BTK) inhibitor, for the treatment of patients with relapsed/refractory mantle cell lymphoma (MCL). Zanubrutinib was discovered in BeiGene’s research facilities in Beijing, China, and is being developed globally by BeiGene as a monotherapy and in combination with other therapies to treat various hematologic malignancies.
“We are proud of our team, and are appreciative of the clinical investigators and patients in China who made this first regulatory filing for zanubrutinib possible. This is BeiGene’s first NDA and is a significant milestone for our company. We look forward to additional regulatory submissions with zanubrutinib and with tislelizumab, our investigational anti-PD-1 antibody,” commented John Oyler, co-founder, CEO and Chairman of BeiGene.
“We believe zanubrutinib is a potentially differentiated BTK inhibitor based on the depth and durability of responses observed in clinical trials of zanubrutinib to date. We are hopeful that zanubrutinib, if approved, may represent a valuable and important treatment option for patients in China with MCL,” said Dr. Xiaobin Wu, General Manager of China and President of BeiGene, Ltd.
“We are excited that the CDA has accepted our new drug application of zanubrutinib for patients with MCL and that it is being reviewed as a Category 1 new drug submission, which is reserved for medicines that are going through their first worldwide regulatory review in China. We look forward to working with the CDA as it completes its thorough assessment of zanubrutinib,” added Wendy Yan, Global Head of Regulatory Affairs at BeiGene.
The NDA is supported by an extensive clinical and non-clinical data package, including the results from an 86-patient single-arm pivotal Phase 2 study in Chinese patients with relapsed or refractory MCL treated with zanubrutinib, dosed at 160 mg orally twice daily. An independent review of response data from this study showed overall response rate (ORR) of 84 percent, including 59 percent of patients who achieved a complete response. With 8.3 months median follow-up, the median duration of response has not been reached, as a majority of the responders remain in a response. The safety profile was consistent with previously reported clinical data for zanubrutinib. Full results of the study are planned to be presented at an upcoming medical conference.
Zanubrutinib is being studied in several clinical trials as part of a broad development program and was recently granted Fast Track Designation by the U.S. Food and Drug Administration (FDA) for the treatment of patients with Waldenstr�m macroglobulinemia (WM). BeiGene plans to submit an NDA to the FDA for zanubrutinib as a potential treatment for patients with WM in the first half of 2019 based on results from a global Phase 1 study.
In addition to the global Phase 1 trial of zanubrutinib, it is also being evaluated in a fully-enrolled, global Phase 3 clinical trial in patients with WM comparing zanubrutinib to ibrutinib, the currently approved BTK inhibitor for WM. Zanubrutinib is also being studied in a global Phase 3 clinical trial in patients with previously untreated chronic lymphocytic leukemia (CLL) and a pivotal Phase 2 trial in patients with relapsed/refractory follicular lymphoma in combination with GAZYVA [(R)] (obinutuzumab). In China, BeiGene has completed enrollment in two other pivotal Phase 2 clinical trials of zanubrutinib in patients with CLL and WM, respectively. BeiGene also plans to initiate a Phase 3 trial comparing zanubrutinib to ibrutinib in patients with relapsed/refractory CLL/small lymphocytic lymphoma (SLL). As of August 2018, more than 1,500 patients have been enrolled in the zanubrutinib clinical development program.
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