Research Studies CancersEvaluating the ability of a drug to improve early breast cancer outcomes Melanoma, MelanomaA Phase 3 Study of Pembrolizumab + Epacadostat or Placebo in Subjects With Unresectable or Metastatic Melanoma (Keynote-252 / ECHO-301) Melanoma, MelanomaExpanded Access Program With Nivolumab to Treat Melanoma (Checkmate 168) Breast Cancer, Breast CancerA Study of Trastuzumab Emtansine (Kadcyla) Plus Pertuzumab (Perjeta) Following Anthracyclines in Comparison With Trastuzumab (Herceptin) Plus Pertuzumab and a Taxane Following Anthracyclines as Adjuvant Therapy in Participants With Primary Breast Cancer