Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of GS-9716 as Monotherapy and in Combination With Anticancer Therapies in Adults With Solid Malignancies

Inclusion Criteria

• Histologically or cytologically confirmed unresectable metastatic or locally advanced disease following treatment for metastatic disease including an immune checkpoint inhibitor and a platinum-containing chemotherapy
• Patients with actionable genomic alterations must have also received treatment with at least 1 approved therapy appropriate to the genomic alteration unless unavailable or contraindicated Cohorts B4 and C4 Specific Inclusion Criteria:
• Histologically or cytologically confirmed disease based on the most recent analyzed biopsy metastatic disease that is refractory to or relapsed after at least 2 prior standard-of-care chemotherapy regimens, one of which was a taxane (unless contraindicated). Key

Exclusion Criteria

• Prior systemic anti-cancer therapy must meet wash-out criteria outlined in protocol
• Treatment with any high dose systemic corticosteroids or nonsystemic radiotherapy within 2 weeks of the first dose of zamzetoclax (low dose corticosteroids permitted).
• Women who are pregnant or lactating
• Patients with active ≥ Grade 2 nausea or vomiting, and/or signs of intestinal obstruction
• Known active or chronic hepatitis B or C infection or HIV infection/ HIV positive
• Known history of clinically significant cardiovascular disease or heart failure.
• Known history of clinically significant active chronic obstructive pulmonary disease or other moderate to severe chronic respiratory illness present within 6 months prior to C1D1
• Known history of other clinically significant pulmonary disease or evidence of active pneumonitis
• Uncontrolled pleural effusion, pericardial effusion, or ascites
• History of clinically significant bleeding, intestinal obstruction, or gastrointestinal (GI) perforation within 6 months prior to C1D1
• Infection requiring intravenous anti-infective use within 2 weeks prior to C1D1
• Active or history of autoimmune disease or immune deficiency
• History of uncured coexisting cancer, not including uncured basal cell carcinoma, cervical cancer in situ, or superficial bladder cancer. Cohort A Specific Exclusion Criteria: zamzetoclax as monotherapy:
• Known heart failure or elevated cardiac biomarkers Cohorts B1 and C1 Specific Exclusion Criteria:
• Known hypersensitivity to excipients in study treatments. Cohorts B4 and C4 Specific Exclusion Criteria:
• Prior treatment with sacituzumab govitecan-hziy or a topoisomerase 1 inhibitor or agents targeting Trop-2. Note: Other protocol defined Inclusion/Exclusion criteria may apply.