This study is assessing the effectiveness of a new targeted therapy (called ATG-037) when it is given alone, or in combination with immunotherapy, in people with locally advanced or metastatic solid cancersA Phase I/Ib, Multi-center, Open-label, and Dose-finding Study to Assess the Safety, Pharmacokinetics, Pharmacodynamics, and Preliminary Efficacy of ATG-037 Monotherapy and Combination Therapy With Pembrolizumab in Patients With Locally Advanced or Metastatic Solid Tumors

Exclusion

1. Primary central nervous system disease, central nervous system metastatic disease, leptomeningeal disease, metastatic cord compression or carcinomatous meningitis.
2. Prior exposure to a CD73 inhibitor/antibody or adenosine receptor inhibitor.
3. Patients considered to have rapidly progressive disease (from the starting of prior line therapy to disease progression lasting no more than 90 days).
4. Prior therapy with any chemotherapy, immunotherapy, anticancer agents or investigational products from a previous clinical study within 28 days of the first dose of study treatment or within a period during which the investigational product or systemic anticancer treatment has not been cleared from the body.
5. Radiotherapy with a wide field of radiation within 28 days, or radiotherapy with a limited field of radiation for palliation within 14 days of the first dose of study treatment. Subject must have recovered from all radiation related toxicity, not requiring corticosteroids.
6. Prior major surgery (excluding placement of vascular access) within 28 days of the first dose of study treatment or minor surgical procedures ≤7 days.
7. Except for alopecia, platinum-induced peripheral neurotoxicity (≤Grade 2). Any unresolved toxicities from prior therapy greater than Common Terminology Criteria for Adverse Events (CTCAE 5.0) Grade 1 at the time of ICF signature.
8. Subjects receiving unstable or increasing doses of corticosteroids.
9. As judged by the investigator, any evidence of severe or uncontrolled systemic diseases, including uncontrolled hypertension defined as a blood pressure (BP) ≥160/100 mmHg despite medical therapy, unstable or uncompensated respiratory and renal disease, active bleeding diseases, allogeneic stem cell transplantation, or any solid organ transplant, etc.