Merck, Pfizer and Verastem announce combination trial of avelumab and VS-6063 in ovarian cancer

PfizerMerck, Pfizer and Verastem have entered into an agreement to evaluate avelumab*, an investigational fully human anti-PD-L1 IgG1 monoclonal antibody, in combination with Verastem's VS-6063**, an investigational focal adhesion kinase (FAK) inhibitor, in patients with advanced ovarian cancer. Avelumab is currently under clinical investigation across a broad range of tumor types. The Phase I/Ib clinical trial is expected to begin in the second half of 2016. Financial terms of the agreement have not been disclosed.

"Combination strategies in immuno-oncology offer significant promise for patients in need. Through our collaboration with Verastem, we hope to accelerate our understanding of avelumab and its potential as a combination therapy with FAK inhibition for patients fighting ovarian cancer," said Dr. Alise Reicin, Head of Global Clinical Development at Merck's biopharma business.

"Through this collaboration, we hope to advance our understanding of how FAK inhibition may complement our development program for avelumab, with the ultimate goal of potentially achieving better outcomes for women with ovarian cancer," said Chris Boshoff, Vice President and Head of Early Development, Translational and Immuno-Oncology at Pfizer Oncology.

"Recent research shows that FAK inhibitors could be beneficial in combination with immuno-oncology agents.(1) We are excited to be working with Merck and Pfizer to build upon the early clinical signals observed in patients with ovarian cancer receiving combination therapy with VS-6063," said Robert Forrester, Verastem President and Chief Executive Officer.

FAK is a protein which is often overproduced in tumors, enabling cancer cells to evade attack by the immune system. As reported in the September 24, 2015, edition of Cell, pre-clinical research shows that FAK inhibition can modulate the balance of immune cells in the tumor, increasing the presence of cytotoxic T cells in the tumor and decreasing the presence of immunosuppressive T regulatory cells.(1)

* Avelumab is the proposed International Non-proprietary Name for the anti-PD-L1 IgG1 monoclonal antibody (MSB0010718C). Avelumab is under clinical investigation and has not been proven to be safe and effective. There is no guarantee any product will be approved in the sought-after indication by any health authority worldwide.

** VS-6063 (defactinib) is under clinical investigation and has not be proven to be safe and effective. There is no guarantee any product will be approved in the sought-after indication by any health authority worldwide.

About Ovarian Cancer
Globally, ovarian cancer is the seventh most common cancer in women.(2) Annually, nearly 239,000 cases are diagnosed worldwide.(3) Ovarian cancer may be difficult to diagnose, as symptoms may appear only in the later stages, when the disease has spread beyond the ovaries.(3) Outcomes for women with ovarian cancer are generally poor due to most patients presenting with advanced disease.(4) The 5-year prevalence of women globally living with ovarian cancer is 22.6 per 100,000.(3) Current treatment options for epithelial ovarian cancer may include surgery, radiotherapy, chemotherapy and targeted therapies.(5) Women who are unable to undergo treatment with platinum-based chemotherapy, due to resistance or refractory disease, currently have very limited treatment options. Platinum-resistant ovarian cancer is defined as ovarian cancer that recurs within six months of completing primary chemotherapy with a platinum-based medication.(6) Platinum-refractory ovarian cancer is defined as ovarian cancer that progresses during treatment with a platinum-based chemotherapy regimen.(6) There is still a clear unmet need in ovarian cancer in relation to general disease awareness,3 improving initial investigations in primary and secondary care and novel therapies with demonstrable efficacy.(7)

About Avelumab
Avelumab (also known as MSB0010718C) is an investigational fully human anti-PD-L1 IgG1 monoclonal antibody. By inhibiting PD-L1 interactions, avelumab is thought to enable the activation of T-cells and the adaptive immune system. By retaining a native Fc-region, avelumab is thought to potentially engage the innate immune system and induce antibody-dependent cell-mediated cytotoxicity (ADCC). In November 2014, Merck and Pfizer announced a strategic alliance to co-develop and co-commercialize avelumab.

About Focal Adhesion Kinase
Focal Adhesion Kinase (FAK) is a non-receptor tyrosine kinase encoded by the PTK-2 gene that is involved in cellular adhesion and, in cancer, metastatic capability. VS-6063 (defactinib) and VS-4718 are orally available compounds that are potent inhibitors of FAK. VS-6063 and VS-4718 utilize a multi-faceted approach to treat cancer by reducing cancer stem cells, enhancing anti-tumor immunity, and modulating the local tumor microenvironment. VS-6063 and VS-4718 are currently being studied in multiple clinical trials for their ability to improve patient survival.

About Merck-Pfizer Alliance
Immuno-oncology is a top priority for Merck and Pfizer. The global strategic alliance between Merck and Pfizer enables the companies to benefit from each other's strengths and capabilities and further explore the therapeutic potential of avelumab, an investigational anti-PD-L1 antibody initially discovered and developed by Merck. The immuno-oncology alliance will jointly develop and commercialize avelumab and advance Pfizer's PD-1 antibody. The alliance is focused on developing high-priority international clinical programs to investigate avelumab, as a monotherapy, as well as combination regimens, and is striving to find new ways to treat cancer.

About Verastem, Inc.
Verastem, Inc. (NASDAQ:VSTM) is a biopharmaceutical company focused on discovering and developing drugs to improve outcomes for patients with cancer. Our product candidates utilize a multi-faceted approach to treat cancer by reducing cancer stem cells, enhancing anti-tumor immunity, and modulating the local tumor microenvironment. Our most advanced clinical product candidates are the Focal Adhesion Kinase inhibitors, VS-6063 and VS-4718, and the dual PI3K/mTOR inhibitor, VS-5584.

Pfizer Inc.: Working together for a healthier world®
At Pfizer, we apply science and our global resources to bring therapies to people that extend and significantly improve their lives. We strive to set the standard for quality, safety and value in the discovery, development and manufacture of healthcare products. Our global portfolio includes medicines and vaccines, as well as many of the world's best-known consumer healthcare products. Every day, Pfizer colleagues work across developed and emerging markets to advance wellness, prevention, treatments and cures that challenge the most feared diseases of our time. Consistent with our responsibility as one of the world's premier innovative biopharmaceutical companies, we collaborate with health care providers, governments and local communities to support and expand access to reliable, affordable health care around the world. For more than 150 years, Pfizer has worked to make a difference for all who rely on us.

About Merck
Merck is a leading science and technology company in healthcare, life science and performance materials. Around 50,000 employees work to further develop technologies that improve and enhance life - from biopharmaceutical therapies to treat cancer or multiple sclerosis, cutting-edge systems for scientific research and production, to liquid crystals for smartphones and LCD televisions. In 2014, Merck generated sales of €11.3 billion in 66 countries.

Founded in 1668, Merck is the world's oldest pharmaceutical and chemical company. The founding family remains the majority owner of the publicly listed corporate group. Merck, Darmstadt, Germany holds the global rights to the Merck name and brand. The only exceptions are the United States and Canada, where the company operates as EMD Serono, MilliporeSigma and EMD Performance Materials.

1. Serrels A et al. FAK Controls Chemokine Transcription, Tregs, and Evasion of Anti-tumor Immunity. Cell 2015; 163 (1): 160–73
2. Ferlay J et al. GLOBOCAN 2012 v1.0, Cancer Incidence and Mortality Worldwide: IARC CancerBase No. 11 [Internet]. Lyon, France: International Agency for Research on Cancer; 2013. Available from: http://globocan.iarc.fr. Accessed December 2015.
3. World Cancer Research Fund International. Ovarian Cancer Statistics. Available from: http://www.wcrf.org/int/cancer-facts-figures/data-specific-cancers/ovarian-cancer-statistics. Accessed November 2015.
4. NICE. Ovarian Cancer: Recognition and Initial Management. Available from: https://www.nice.org.uk/guidance/cg122. Accessed November 2015.
5. National Cancer Institute. Ovarian Epithelial, Fallopian Tube, and Primary Peritoneal Cancer Treatment (PDQ®). Available from:http://www.cancer.gov/types/ovarian/patient/ovarian-epithelial-treatment-pdq Accessed November 2015.
6. Ledermann JA et al. Newly diagnosed and relapsed epithelial ovarian carcinoma: ESMO clinical practice guidelines for diagnosis, treatment and follow-up. Ann Oncol 2013; 24(Suppl 6): vi24–32.
7. Ojalvo LS et al. Emerging immunotherapies in ovarian cancer. Discov Med 2015; 20(109): 97–109.

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