Multicenter, open-label, dose-escalation Phase I/Ib clinical study to evaluate the safety and tolerability, the MTD/RP2D, pharmacokinetics (PK), pharmacodynamics (PD), and antitumor activity of EOS100850 (Inupadenant) as a Single Agent and in Combination with Pembrolizumab and/or Chemotherapy in Participants with Advanced Cancers.

For more information regarding participation in the Trial, please refer to your physician

Inclusion Criteria:

• Women and men ≥18 years of age with Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
• Subject with histologically or cytologically confirmed advanced solid tumor for whom no standard treatment is further available.
• At least 4 weeks since any previous treatment for cancer
• Subject must consent to pretreatment and on treatment tumor biopsies
• Adequate organ and marrow function

Exclusion Criteria:

• Patients with primary brain tumors or primary tumors with central nervous system metastases as only location of disease. Controlled brain metastases are permitted
• Participants with second/other active cancers requiring current treatment
• Uncontrolled/significant heart disease
• Known History of chronic hepatitis, Positive test for Hepatitis B virus surface antigen or Hepatitis C antibody (except participants with liver cancer) or Human Immunodeficiency Virus/Acquired Immunodeficiency Syndrome(HIV/AIDS)
• Active/uncontrolled autoimmune disease
• Active infection

Other protocol defined inclusion/exclusion criteria could apply