Phase I Clinical Study of GB222 to Evaluate the Safety, Tolerability and PK Profiles.

Injection, strength 100mg/bottle, intravenous infusion, 3mg/kg, dose escalation; After it is tolerated, 2 weeks/per time, combines use of chemotherapeutic agents is allowed after 3 months until disease progression, death, intolerable toxic reactions, withdrawal of informed consent form, loss to follow-up, death or study conclusion; low dose group.

Injection, strength 100mg/bottle, intravenous infusion,5mg/kg, dose escalation; After it is tolerated, 2 weeks/per time, combines use of chemotherapeutic agents is allowed after 3 months until disease progression, death, intolerable toxic reactions, withdrawal of informed consent form, loss to follow-up, death or study conclusion; intermediate dose group 1.

Injection, strength 100mg/bottle, intravenous infusion,7.5mg/kg, dose escalation; After it is tolerated, 2 weeks/per time, combines use of chemotherapeutic agents is allowed after 3 months until disease progression, death, intolerable toxic reactions, withdrawal of informed consent form, loss to follow-up, death or study conclusion; intermediate dose group 2.

Injection, strength 100mg/bottle, intravenous infusion,10mg/kg, dose escalation; After it is tolerated, 2 weeks/per time, combines use of chemotherapeutic agents is allowed after 3 months until disease progression, death, intolerable toxic reactions, withdrawal of informed consent form, loss to follow-up, death or study conclusion; high dose group.