Pfizer Inc. (Pfizer) and Debiopharm Group™ (Debiopharm) announced today that they have entered into a co-development agreement to conduct a Phase 3 trial of tremelimumab (CP675,206), a fully human anti-CTLA4 monoclonal antibody for the treatment of patients with unresectable, Stage IV melanoma. A biomarker will be used to select patients considered likely to respond to tremelimumab... 
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