Ensayos clínicos

Inclusion Criteria:

• Eastern Cooperative Oncology Group performance status( PS) of 0 or 1.
• Left Ventricular Ejection Fraction (LVEF) ≥ 50%

Part 1:

• Advanced/unresectable or metastatic breast cancer or gastric or gastroesophageal junction adenocarcinoma that is refractory to or intolerable with standard treatment, or for which no standard treatment is available.

Part 2a:

• Advanced breast cancer with HER2 overexpression that is refractory to or intolerable with standard treatment, or for which no standard treatment is available.
• Treated with ado-trastuzumab emtansine (T-DM1)

Part 2b:

• Advanced gastric or gastroesophageal junction adenocarcinoma with HER2 overexpression that is refractory to or intolerable with standard treatment, or for which no standard treatment is available.
• Treated with trastuzumab

Part 2c:

• Advanced breast cancer with HER2 low expression that is refractory to or intolerable with standard treatment, or for which no standard treatment is available.

Part 2d:

• Advanced solid malignant tumor with HER2 expression other than breast cancer and gastric or gastroesophageal junction adenocarcinoma that is refractory to or intolerable with standard treatment, or for which no standard treatment is available.

Exclusion Criteria:

• Has a medical history of symptomatic Congestive Heart Failure (CHF) (NYHA classes II-IV) or serious cardiac arrhythmia.
• Has a medical history of myocardial infarction or unstable angina.
• Has a QTc prolongation to > 450 millisecond (ms) in males and > 470 ms in females.
• Has a medical history of clinically significant lung diseases