This is Phase 1 study FIH to check "Dose Escalation, Dose expansion and Indication expansion". This study is AUSTRALIA only study.

Subjects must meet all the following criteria to be eligible for enrollment into the study:

1. Ability to understand and voluntarily agrees to participate by giving written informed consent for the study;
2. Male or female aged ≥18 years at the time of signing the ICF;
3. Histopathologically or cytologically documented advanced or metastatic malignancies and failed or intolerable to previous standard therapy, has no available standard of care therapy or refused standard therapy;
4. An Eastern Cooperative Oncology Group (ECOG) performance status (PS) score of 0 or 1 (Appendix 2);
5. Female and male patients of reproductive potential must agree to use highly effective contraception during the study treatment period and within 6 months after the last investigational drug administration.

Subjects who meet any of the following criteria will be excluded from the study:

1. Patients with known active central nervous system (CNS) metastases and/or carcinomatous meningitis.
2. Patients with tumor-related pain that cannot be controlled as determined by the investigator.
3. Systemic anti-tumor therapy within 28 days prior to the first dose of the study treatment
4. History of autoimmune diseases, except for Type 1 diabetes (blood glucose can be controlled by insulin therapy)
5. History of clinically significant cardiovascular or cerebrovascular diseases within 6 months prior to the first dose of study treatment.
6. Known history of serious allergic reactions to the investigational product or its main ingredients;
7. History of immunodeficiency, including positive HIV serum test result and other acquired or congenital immunodeficiency diseases, or history of organ transplantation;