Study Investigating Safety,Tolerability,Pharmacokinetics and Antitumor Activities of HBM4003 Combine With Toripalimab

Main inclusion/exclusion criteria: Main inclusion criteria 1. Males or females aged ≥ 18 years at the time of signing the informed consent form. For Part 1 of this study, the subjects should be ≤ 75 years of age. 2. For Part 1 of the study, patients histopathologically diagnosed with advanced or recurrent solid tumors 3. For Part 2 of the study, patients with locally advanced or metastatic melanoma who had been pathologically confirmed and could not be surgically removed were enrolled. 4. Subjects must be able to provide fresh or archived tumor tissues . 5. Patients whose estimated survival time is more than 3 months. 6. Patients with at least one measurable lesion at baseline according to RECIST (Version 1.1). 7. Patients with Eastern Cooperative Oncology Group (ECOG) performance status score ≤ 1. 8. Patients whose organ function must meet the study requirements: 9. Every woman or man with potential fertility needs to use an effective contraceptive method. Main exclusion criteria 1. Patients who are simultaneously participating in another clinical study, unless the study is an observational (non-interventional) clinical study or the patient is already in the survival follow-up period of the interventional study. 2. Patients with a history of severe allergic diseases, a history of severe drug allergies, and known or suspected allergy to macromolecular protein preparations or HBM4003 excipients or toripalimab excipients. 3. Previous and concomitant drugs or treatments to be excluded like CTLA4, PD-1,PD-L1. 4. Insufficient recovery from previous treatments: 5. Diseases that may affect the efficacy and safety of the investigational product. 6. A history of other malignant diseases within 5 years before the first dose. 7. Symptomatic, active, or urgent treatment-requiring central nervous system (CNS) metastasis with imaging evidence (based on CT or MRI assessment). 8. Subjects with pleural effusion, pericardial effusion, or ascites 9. Subjects who the investigator believes may have other factors that will affect the efficacy or safety evaluation of this study (e.g., mental disorders, alcoholism, drug use, etc.). 10. Women who are pregnant or breastfeeding, or who plan to become pregnant during the study period and within 3 months after the last administration of the investigational product.