Phase 3 study of Stimuvax for breast cancer

Oncothyreon announced that its licensing partner Merck KGaA of Germany, has initiated a global Phase 3 trial of Stimuvax (BLP25 liposome vaccine, L-BLP25) in patients with hormone receptor-positive, locally advanced, recurrent or metastatic breast cancer. This trial, named STRIDE (STimulating immune Response In aDvanced brEast cancer), is anticipated to enroll more than 900 patients in over 30 countries.  Patients with estrogen receptor-positive and/or progesterone receptor-positive, non-resectable locally advanced, recurrent or metastatic breast cancer receiving hormonal therapy will be randomized to receive either Stimuvax or a placebo in a 2:1 ratio. The primary endpoint of STRIDE is progression-free survival. Overall survival, quality of life, tumor response and safety will also be assessed in this study.

Stimuvax is an investigational therapeutic cancer vaccine designed to induce an immune response to cancer cells that express MUC1, a glycoprotein antigen widely expressed on common cancers such as lung, breast, prostate, and colorectal cancers. Stimuvax is thought to work by stimulating the body's immune system to identify and destroy cancer cells expressing MUC1.

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