This is a phase Ia/Ib, open-label, multicenter, dose-escalation and expansion study to evaluate the safety, tolerability, pharmacokinetics and anti-tumor activity of KN046 in subjects with advanced solid tumors and lymphoma .

Inclusion Criteria:

1. Signed informed consent; willing and able to complete all required procedures of study.
2. With advanced-stage or metastatic tumor (unresectable) and experienced progression since last anti-tumor treatment; standard therapy is not available or rejected.
3. Subjects must have at least one measurable lesion in advanced solid tumors, at least one measurable or assessable lesion in NK/T cell lymphoma.
4. ECOG performance status of 0 or 1.
5. Subject must have adequate organ function.
6. Female patients and males with partners of childbearing potential should be using highly effective contraceptive measures (failure rate of less than 1% per year). Contraception should be continued for a period of 24 weeks after dosing has been completed.
7. Ability to comply with treatment, procedures and PK sample collection and the required study follow-up procedures.

Exclusion Criteria:

1. Known brain metastasis or other CNS metastasis that is either symptomatic or untreated.
2. Is currently participating or has participated in a study of an investigational drug within 4 weeks prior to the first dose of trial treatment.
3. Patients who have received immune checkpoint proteins/antibody/medicine (including PD-1, PD-L1, etc) for treatment.
4. Has interstitial lung disease, or a history of pneumonitis that required oral or intravenous glucocorticoids to assist with management.
5. Subjects with active autoimmune diseases or history of autoimmune diseases should be excluded.
6. Active HBV or HCV infection.
7. Known HIV infection or known history of acquired immune deficient syndrome (AIDS).
8. Any unresolved CTCAE Grade ≥ 2 toxicities from prior anti-cancer therapy with the exception of vitiligo, alopecia.
9. Patients who have serious hypersensitive reaction to monoclonal antibodies, and have history of uncontrolled allergic asthma.