This phase I study is evaluating how safe and effective a combination of two new cancer drugs (YH002 and YH001) are in people with advanced solid cancersA Multicenter, Open-label, Phase I Dose Escalation Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Preliminary Anti-tumor Activity of YH002 in Combination With YH001 in Subjects With Advanced Solid Tumors

Exclusion

Subjects who meet any of the following criteria cannot be enrolled:

1. Subjects have another active invasive malignancy within 5 years.
2. Previous exposure to TNFR such as anti-OX40 antibodies.
3. Subjects must not have received any anticancer therapy or another investigational agent within the shorter of 4 weeks or 5 half-lives before the first dose of the study treatment(subject to the longer one).
4. Continuance of toxicities due to prior radiotherapy or chemotherapy agents that have not recovered to ≤ Grade 1 per CTCAE 5.0, except alopecia ≤ Grade 2.
5. Primary central nervous system (CNS) malignancies or symptomatic CNS metastases.
6. Subjects must not have a known or suspected history of an autoimmune disorder, including but not limited to inflammatory bowel disease, celiac disease, Wegner syndrome, Hashimoto syndrome, systemic lupus erythematosus, scleroderma, sarcoidosis, or autoimmune hepatitis, within 3 years of the first dose of study treatment.
7. Clinically uncontrolled intercurrent illness, including but not limit to an ongoing active infection, active coagulopathy, uncontrolled diabetes (blood glucose > 250 mg/dl), uncontrolled pleural and peritoneal effusion, psychiatric illness that would limit compliance with the study requirements and other serious medical illnesses requiring systemic therapies
8. Subjects must not have active infection of human immunodeficiency virus, hepatitis B, hepatitis C or Covid-19.