BeiGene Initiates Global Phase 3 Trial of Anti-PD-1 Antibody

BeiGene, Ltd. recently announced that in December 2017, the first patient was dosed in a global Phase 3 clinical trial of tislelizumab, an investigational anti-PD-1 antibody, in patients with previously untreated advanced hepatocellular carcinoma (HCC or liver cancer). Along with two pivotal Phase 2 trials in China in relapsed/refractory classical Hodgkin lymphoma and urothelial cancer, and a global Phase 3 trial in patients with non-small cell lung cancer, tislelizumab is now being evaluated in pivotal trials in four distinct indications.

“We are pleased to announce the initiation of this global Phase 3 trial of tislelizumab as part of our collaboration with our partner Celgene. We look forward to continuing to leverage our strong presence in Asia and global clinical development organization to broadly develop tislelizumab,” said John V. Oyler, Founder, Chief Executive Officer, and Chairman of BeiGene.

“Advanced liver cancer is a serious and prevalent disease, with few treatment options. We are hopeful that this Phase 3 trial will establish safety and efficacy of tislelizumab in a head-to-head comparison to sorafenib, the current global standard of care for advanced liver cancer,” commented Amy Peterson, M.D., Chief Medical Officer for Immuno-Oncology of BeiGene.

The Phase 3, open-label, multi-center, randomized trial is designed to compare the efficacy and safety of tislelizumab versus sorafenib as a potential first-line treatment in patients with unresectable HCC. Approximately 640 patients will be enrolled at approximately 110 cancer centers in China, the United States, Japan, the United Kingdom, Germany, Spain, Czech Republic, France, and Italy. Patients will be randomized to receive either tislelizumab at 200 mg every three weeks or sorafenib at 400 mg twice daily.

The trial’s primary endpoint is overall survival, and secondary endpoints include overall response rate, progression free survival, duration of response, time to progression, health-related quality of life, disease control rate, clinical benefit rate, and safety profile.

“The expected median survival in patients with advanced liver cancer is typically less than one year, and patients can face difficulties tolerating sorafenib,” said Qin Shukui, M.D., Hospital Deputy Director and Director of the Cancer Center at the People’s Liberation Army 81 Hospital, Nanjing, China, and co-lead investigator of the trial. “I look forward to testing tislelizumab in the hopes that we can further advance treatment options for patients with advanced liver cancer.”
“I am excited for the opportunity to evaluate the safety and efficacy of tislelizumab, which has been dosed in more than 850 patients in either monotherapy or combination clinical trials. Based on preliminary data from a dose expansion cohort of HCC patients in a Phase 1 trial, we are hopeful that tislelizumab will be well-tolerated and exhibit meaningful anti-tumor activity in this Phase 3 trial,” said Andrew Zhu, MD, PhD, Director of Liver Cancer Research at Massachusetts General Hospital, Professor of Medicine at Harvard Medical School and co-lead investigator of the trial. For more information about the trial, patients and physicians should email BeiGene at BGBA317clinicaltrials@beigene.com.

HCC is a major global health problem, accounting for 85-90 percent of all reported cases of liver cancer.i Liver cancer is the sixth most common type of cancer, with an estimated 782,000 new cases per year worldwide; it was also the second most common cause of cancer-related mortality, responsible for an estimated 746,000 deaths.ii China accounts for approximately 50 percent of both new HCC cases and HCC-related deaths worldwide.ii

Tislelizumab is an investigational humanized monoclonal antibody that belongs to a class of immuno-oncology agents known as immune checkpoint inhibitors. It 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 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. 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 tislelizumab for solid tumors outside of Asia (except Japan).

BeiGene is a global, commercial-stage, research-based biotechnology company focused on molecularly targeted and immuno-oncology cancer therapeutics. With a team of over 700 employees in China, the United States, and Australia, 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.