Lapatinib Terminated Phase 1 Trials for Stage IV Breast Cancer / Male Breast Cancer / Her2-Positive Breast Cancer / Stage IV Esophageal Cancer / Stage IIIC Esophageal Cancer / Recurrent Breast Cancer / Recurrent Gastric Cancer / Stage IV Gastric Cancer / Adenocarcinomas of the Gastroesophageal Junction / Stage IIIC Gastric Cancer / Stage IIIC Breast Cancer / Recurrent Esophageal Cancer Treatment