This phase I trial is evaluating how safe and tolerable a new biological therapy (AK127) in combination with another biological therapy (AK104 or cadonilimab) in patients with advanced or metastatic solid cancers (excluding some blood cancers)A Phase 1a/1b, Multicenter, Open-Label, Dose-Escalation and Dose-Expansion Study to Evaluate the Safety, Pharmacokinetics, and Anti-tumour Activity of AK127 in Combination With AK104 in Subjects With Advanced or Metastatic Solid Tumours

Exclusion

1. History of severe hypersensitivity reactions to other mAbs.
2. Subjects with a condition requiring systemic treatment with either corticosteroid (> 10 mg daily ) or other immunosuppressive medications within 2 weeks of study drug administration.
3. Prior use of approved or investigational anti-TIGIT, anti-PVRIG, or anti-CD96 therapy
4. Receiving any Other anticancer therapy (e.g., chemotherapy, radiotherapy, biologic or hormonal therapy for cancer treatment. etc.) within 4 weeks prior to the first dose of treatment
5. Any major surgery within 4 weeks prior to the first dose of treatment
6. Receiving agents with immunomodulatory effect within 2 weeks prior to the first dose of treatment.
7. Active or prior documented inflammatory bowel disease
8. History of organ transplant.
9. History of interstitial lung disease, noninfectious pneumonitis except for those induced by radiation therapies.
10. Known active hepatitis B or C infections or history of HIV.
11. Receipt of live attenuated vaccines within 4 weeks prior to the first dose of investigational product.
12. Patients with severe heart and lung dysfunction.