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BeiGene Announces Acceptance of its First New Drug Application for Zanubrutinib in Relapsed/Refractory Mantle Cell Lymphoma by China Drug Administration

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Monday, August 27, 2018

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BEIJING, China and CAMBRIDGE, MA - BeiGene, Ltd. (NASDAQ: BGNE; HKEX: 06160), a commercial-stage biopharmaceutical company focused on developing and commercializing innovative molecularly-targeted and immuno-oncology drugs for the treatment of cancer, 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 Waldenström 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® (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.

About Mantle Cell Lymphoma
Lymphoma is a diverse group of malignancies that originates from B, T or NK cells. Mantle cell lymphoma (MCL) is typically an aggressive form of non-Hodgkin lymphoma (NHL) that arises from B cells originating in the “mantle zone.” In 2013, the incidence of lymphoma was 4.2 per 100,000 and the mortality was 2.2 per 100,000 in mainland Chinai, making it the eleventh most common cancer and the tenth leading cause of cancer death.ii Mantle cell lymphoma usually has a poor prognosis, with a median survival of three to four years, although occasional patients may have an indolent course.iii Frequently, mantle cell lymphoma is diagnosed at a later stage of disease.

About Zanubrutinib
Zanubrutinib (BGB-3111) is an investigational small molecule inhibitor of Bruton’s tyrosine kinase (BTK) that is currently being evaluated in a broad pivotal clinical program globally and in China as a monotherapy and in combination with other therapies to treat various B cell malignancies.

About BeiGene
BeiGene is a global, commercial-stage, research-based biotechnology company focused on molecularly-targeted and immuno-oncology cancer therapeutics. With a team of over 1,300 employees in China, the United States, Australia and Switzerland, BeiGene is advancing a pipeline consisting of novel oral small molecules and monoclonal antibodies for cancer. BeiGene is also working to create combination solutions aimed to have both a meaningful and lasting impact on cancer patients. BeiGene markets ABRAXANE® (nanoparticle albumin–bound paclitaxel), REVLIMID® (lenalidomide), and VIDAZA® (azacitidine) in China under a license from Celgene Corporation.iv

i Chen W, Zheng R, Zhang S, Zeng H, Xia C, Zuo T, et al. Cancer incidence and mortality in China, 2013. Cancer Lett. 2017; 401:63–71

ii Chen W, Zheng R, Baade PD, Zhang S, Zeng H, Bray F, et al. Cancer Statistics in China, 2015. CA Cancer J Clin. 2016;66(2):115–32

iii Philip J. Bierman, James O. Armitage, in Goldman's Cecil Medicine (Twenty Fourth Edition), 2012

iv ABRAXANE®, REVLIMID®, and VIDAZA® are registered trademarks of Celgene Corporation.

Craig West
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Liza Heapes
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Source: BeiGene
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