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