A Study of ATG-031 in Advanced Solid Tumors or B-cell Non-Hodgkin Lymphomas

Key Inclusion Criteria:

1. Histological or cytologically confirmed advanced solid tumor or B-NHL which haverelapsed from or been refractory to all locally available standard therapies.

2. Adequate hepatic function:

3. AST and ALT ≤ 2.5×times ULN (≤ 5 × ULN if liver metastases).

4. Total bilirubin ≤ 1.5×ULN (except Gilbert syndrome).

5. Lipase and amylase ≤ 2×ULN.

6. Adequate renal function: calculated creatinine clearance of ≥ 40 mL/min using theCockroft- Gault formula.

7. Adequate bone marrow function without growth factors or blood transfusion within 7days of the first dose of study treatment.

8. Absolute neutrophil count (ANC) ≥ 1.5×109/L.

9. Platelet count ≥ 100×109/L.

10. Hemoglobin ≥ 90 g/L.

Key Exclusion Criteria:

1. Patients with CNS malignancies, except those who are clinically stable for ≥ 4 weeksand off corticosteroids following prior surgery, whole-brain radiation, orstereotactic radiosurgery.

2. Received any other investigational product or prior systemic anticancer therapyincluding chemotherapy, immunotherapy, radiotherapy, or other anticancer within 21days prior to first dose of study

3. Grade ≥3 irAEs or irAEs that lead to discontinuation of prior immunotherapy.8. Otherprimary malignancies developed within 5 years prior to the first dose of the studytreatment

4. Other primary malignancies developed within 5 years prior to the first dose of thestudy treatment

5. Have active or previous autoimmune diseases that are likely to recur or are at riskof such diseases judged by the investigator.

6. Major cardiovascular disease

7. Active hepatitis B and/or hepatitis C (HBV-DNA or HCV-RNA detectable by locallaboratory, respectively).

8. Patients with history of human immunodeficiency virus (HIV) infection or acquiredimmunodeficiency syndrome (AIDS).

9. A history of allograft organ transplantation for solid tumor or allogeneichematopoietic stem cell transplantation for B-NHL patients).

10. Patients who are pregnant or lactating.