A Study of QL1706 in Subjects With Advanced Malignant Tumor

This is an open-label, multicenter, Phase 1, ascending dose escalation study of QL1706 in subjects with advanced malignant tumor. The study will be conducted in 2 parts. Part 1 of the study will be a dose escalation evaluation to determine the maximum tolerated dose (MTD) and to establish a recommended Phase 2 dose (RP2D) of QL1706. This study purpose is to describe the safety and tolerability, to assess Pharmacokinetics (PK) and immunogenicity, and to preliminarily assess the anti-tumor activity of QL1706 in subjects with advanced malignant tumor. Part 2 of the study will further characterize the PK parameters for QL1706 in subjects with advanced malignant tumor.