ProTrials Research Selected by Calithera Biosciences


Agreement to Provide Clinical Development Services for Calithera's Lead Tumor Metabolism Product Candidate

  SAN JOSE, CA. -  ProTrials Research, Inc., a leader in the clinical research organization (CRO) industry, announced today the awarding and initiation of an agreement with Calithera Biosciences Inc., a clinical stage biotechnology company focused on the discovery and development of novel small molecule drugs directed against tumor metabolism and tumor immunology targets for the treatment of cancer. Under the agreement, ProTrials will provide clinical trial development support for the company's first-in-class inhibitor CB-839 program, which targets glutaminase, a critical enzyme in tumor metabolism.   "We are extremely pleased that Calithera has selected ProTrials to support research into CB-839," said Jodi Andrews, Co-Founder and Co-CEO of ProTrials. "We recognize the potential of CB-839 to become an important therapeutic agent for the treatment of cancer, and look forward to applying our expertise to support Calithera's development of this first-in-class investigational compound."   Calithera's CB-839 program is currently in Phase 1b clinical studies. Phase 1 data presented in June at the 2016 American Society of Clinical Oncology (ASCO) meeting in Chicago demonstrated the clinical activity, tolerability, and unique mechanism of action of CB-839 in patients with renal cell carcinoma (RCC) and triple negative breast cancer (TNBC).   "ProTrials and Calithera share a commitment to high quality research and clinical innovation," said Susan Molineaux, PhD, President and Chief Executive Officer of Calithera. "Given their reputation for clinical research excellence, we are pleased to engage ProTrials to support the advancement of CB-839."   To learn more about the suite of clinical research services offered by ProTrials, please visit


About ProTrials Research, Inc.

Founded in 1996, ProTrials Research, Inc. is a clinical research organization (CRO) headquartered in San Jose, CA, with clinical operations personnel located throughout North America and worldwide. The company works with clients in the pharmaceutical, biotechnology and medical device industries, providing high quality study management, site monitoring, project management and associated clinical operations services. ProTrials Global Limited, the company's UK-based subsidiary, supports European-based clinical activities. ProTrials also has international partners that offer local support in countries throughout Asia, Latin America and Australia. For more information or to discuss your clinical research needs, please visit

or call 650.864.9195.

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