Merck, Eisai Form Oncology Pact

Eisai Co., Ltd. and Merck & Co. Inc., through a subsidiary, have formed a clinical trial collaboration to evaluate the safety, tolerability and efficacy of Merck's anti-PD-1 therapy, pembrolizumab (marketed in the U.S. under the brand name Keytruda) in combination with Eisai oncology compounds lenvatinib mesylate (a multi-targeting RTK inhibitor marketed in the US under the brand name Lenvima) and eribulin mesylate (a microtubule dynamics inhibitor marketed in nearly 60 countries including Japan, the U.S., and Europe under the brand name Halaven) in multiple clinical trials.

The planned studies include a multicenter, open-label Phase Ib/II study of lenvatinib plus pembrolizumab in select solid tumors and an open-label, single-arm, multicenter Phase Ib/II study to evaluate the efficacy and safety of eribulin in combination with pembrolizumab in metastatic triple-negative breast cancer. Eisai and Merck will establish a Joint Development Committee to oversee clinical development activities. The studies are expected to begin in the second half of 2015. Financial terms of the agreement were not disclosed.

Source: Merck & Co.

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