A Phase I Study, Evaluating the Safety, Pharmacokinetics and Efficacy of PRJ1-3024 in Subjects with Advanced Solid Tumors

Key Inclusion Criteria:

• Histologically or cytologically confirmed locally advanced (unresectable) ormetastatic r/r solid tumors for which no standard therapy is available or for whomstandard therapy is considered unsuitable or intolerable.

• Male or non-pregnant, non-lactating female subjects age ≥18 years.

• ECOG Performance Status 0~2.

• Has at least 1 measurable lesion as defined by RECIST 1.1 criteria .

• Life expectancy of >3 months, in the opinion of the Investigator.

• Able to take oral medications and willing to record daily adherence toinvestigational product.

• Adequate hematologic parameters unless clearly due to the disease under study.

• Adequate renal and hepatic function

• Able to understand and willing to sign a written informed consent form.

Key Exclusion Criteria:

• History of another malignancy

• Known symptomatic brain metastases requiring >10 mg/day of prednisolone.

• Significant cardiovascular disease

• Known active HBV, HCV, AIDS-related illness.

• Has received a live vaccine within 30 days

• History of active autoimmune disorders or ongoing immunosuppressive therapy.

• Receiving concurrent anti-cancer therapy, investigational product, strong inhibitorsor inducers of cytochrome P450 3A (CYP3A) .

• Prior treatment with hematopoietic progenitor kinase 1 (HPK1) inhibitors.