NCT01931150 2017-01-13Study of Prophylactic Topical Dapsone 5% Gel Versus Moisturizer for Cetuximab-induced Papulopustular (Acneiform) Rash in Patients With mCRC or HNSCC Without Previous or Concurrent RTMemorial Sloan Kettering Cancer CenterPhase 3 Completed11 enrolled 7 charts