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BeiGene to Present Data on Anti-PD-1 Antibody Tislelizumab at the IASLC 19th World Conference on Lung Cancer (WCLC) in Toronto

September 5, 2018

CAMBRIDGE, Mass. and BEIJING, China, Sept. 05, 2018 (GLOBE NEWSWIRE) -- 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, today announced that it will present data on its investigational anti-PD-1 antibody tislelizumab at the International Association for the Study of Lung Cancer (IASLC) 19th World Conference on Lung Cancer (WCLC), which takes place September 23-26 in Toronto, Canada. Discovered by BeiGene, tislelizumab is being studied as a monotherapy and in combination with other therapies for the treatment of a broad array of both solid tumors and hematologic cancers.

Poster Presentations:

Tislelizumab Combined with Chemotherapy as First-Line Treatment in Chinese Patients with Advanced Title: Lung Cancer Session 1: JCSE01 – Perspectives for Lung Cancer Early Detection Location: Room 202 BD Date: Sunday, September 23 Time: 07:30-11:15 EDT Presenter: J. Wang Poster: P1.04-36 Session 2: P1.04 Immuno-oncology Date: Monday, September 24 Time: 16:45-18:00 EDT Presenter: J. Wang Title: Preliminary Results with Tislelizumab in Chinese Patients with Non-Small Cell Lung Cancer (NSCLC) Poster: P2.04-29 Session: P2.04 Immuno-oncology Date: Tuesday, September 25 Time: 16:45-18:00 EDT Presenter: Y-L. Wu

About TislelizumabTislelizumab (BGB-A317) is an investigational humanized monoclonal antibody that belongs to a class of immuno-oncology agents known as immune checkpoint inhibitors. Discovered by BeiGene scientists in Beijing, tislelizumab is designed to bind to PD-1, a cell surface receptor that plays an important role in downregulating the immune system by preventing the activation of T-cells. Tislelizumab has demonstrated high affinity and specificity for PD-1. It is potentially differentiated from the currently approved PD-1 antibodies in an engineered Fc region, which is believed to minimize potentially negative interactions with other immune cells, based on preclinical data. Tislelizumab is being developed as a monotherapy and in combination with other therapies for the treatment of a broad array of both solid tumor and hematologic cancers. BeiGene and Celgene Corporation have a global strategic collaboration for the development of tislelizumab in solid tumor cancers outside of Asia (except Japan).

About BeiGeneBeiGene 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.1

Forward-Looking StatementsThis press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and other federal securities laws, including statements regarding BeiGene’s advancement of, and anticipated clinical development, regulatory milestones and commercialization of tislelizumab. Actual results may differ materially from those indicated in the forward-looking statements as a result of various important factors, including BeiGene’s ability to demonstrate the efficacy and safety of its drug candidates; the clinical results for its drug candidates, which may not support further development or marketing approval; actions of regulatory agencies, which may affect the initiation, timing and progress of clinical trials and marketing approval; BeiGene’s ability to achieve commercial success for its marketed products and drug candidates, if approved; BeiGene’s ability to obtain and maintain protection of intellectual property for its technology and drugs; BeiGene’s reliance on third parties to conduct drug development, manufacturing and other services; BeiGene’s limited operating history and BeiGene’s ability to obtain additional funding for operations and to complete the development and commercialization of its drug candidates, as well as those risks more fully discussed in the section entitled “Risk Factors” in BeiGene’s most recent quarterly report on Form 10-Q, as well as discussions of potential risks, uncertainties, and other important factors in BeiGene’s subsequent filings with the U.S. Securities and Exchange Commission. All information in this press release is as of the date of this press release, and BeiGene undertakes no duty to update such information unless required by law.

Investor Contact Craig West+1 857-302-5189 ir@beigene.com

Media ContactLiza Heapes+ 1 857-302-5663media@beigene.com

________________________1 ABRAXANE®, REVLIMID®, and VIDAZA® are registered trademarks of Celgene Corporation.

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