This study is to characterize the safety, tolerability, pharmacokinetics (PK), immunogenicity, pharmacodynamics (PD) and anti-tumor activity of PM8002, a PD-L1/VEGF bispecific antibody, as a single agent in adult subjects with advanced solid tumors.

Inclusion Criteria:

1. Voluntary participation in clinical study; fully understand the study and sign informed consent voluntarily; willing to follow and able to complete all test procedures;
2. Male or female aged 18 to 75 years;
3. Patients with malignant tumor confirmed by histology or cytology;
4. The toxicity of previous anti-tumor therapy has not been alleviated；
5. Adequate organ function；
6. ECOG score was 0-1;
7. Expected survival >=12 weeks;
8. According to RECIST 1.1 criteria, at least 1 measurable lesion that has not been previously treated locally.

Exclusion Criteria:

1. History of severe allergic disease, severe allergy to drugs or known allergy to any component of the drug in this study;
2. Evidence of major coagulopathy or other obvious risk of bleeding;
3. Patients are experiencing a clear interstitial lung disease or non-infectious pneumonia, unless it is caused by local radiotherapy;
4. Patients with uncontrolled brain metastases should be excluded from this clinical trial;
5. Patients ever experienced other active malignant tumors within 5 years prior to the study treatment;
6. Prior allogeneic organ transplantation or allogeneic hematopoietic stem cell transplantation;
7. Known history of alcohol abuse, psychotropic drug abuse or drug abuse;
8. Syphilis antibody positive;
9. Patients with active tuberculosis (TB) are excluded;
10. Pregnant or lactating women;
11. Other conditions lead to inappropriate to participate in this study as judged by the investigator.

The data will be published or presented for publications (poster, abstract, articles or papers) or any presentations.

After the trial completed

NCI is committed to sharing data in accordance with NIH policy.