A Study of T-DXd in Patients with Selected HER2-overexpressing Tumors

Exclusion Criteria

• -Primary diagnosis of adenocarcinoma of the breast, adenocarcinoma of the gastric body or gastroesophageal junction.
• -Has substance abuse or any other medical conditions that may interfere with the patient’s participation in the clinical study or evaluation of the clinical study results.
• -A pleural effusion, ascites or pericardial effusion that requires drainage, peritoneal shunt, or Cell-free and concentrated ascites reinfusion therapy.
• -History of another primary malignancy except for malignancy treated with curative intent with no known active disease within 3 years before the first dose of study intervention and of low potential risk for recurrence. Exceptions include adequately resected non melanoma skin cancer, curatively treated in situ disease, or other solid tumors curatively treated.
• -Has unresolved toxicities from previous anti cancer therapy.
• -Has any spinal cord compression, leptomeningeal disease, or clinically active CNS metastases.
• -Uncontrolled infection requiring IV injection of antibiotics, antivirals, or antifungals, or active infection including tuberculosis.
• -Active primary immunodeficiency, known uncontrolled active HIV infection, or active Hepatitis B or C infection.
• -Protocol-defined inadequate cardiac function.
• -History of (non-infectious) ILD/pneumonitis that required steroids, has current ILD/pneumonitis or where suspected ILD/pneumonitis cannot be ruled out by imaging at screening.
• -Has a concomitant medical condition that would increase the risk of toxicity in the opinion of the investigator.
• -Anti cancer chemotherapy without an adequate treatment washout period prior to randomization.
• -Major surgical procedure (excluding placement of vascular access) or significant traumatic injury within 4 weeks of the first dose of study intervention or an anticipated need for major surgery during the study.
• -Known hypersensitivity to T-DXd or any excipients of the product or other mAbs.
• -Involvement in the planning and/or conduct of the study.
• -Judgment by the investigator that the patient should not participate in the study if the patient is unlikely to comply with study procedures, restrictions, and requirements.
• -Previous enrollment in the present study.
• -For females only: Currently pregnant or breast feeding, or who are planning to become pregnant.