A Clinical Study to Evaluate Injection TQB2102 for the Treatment of Patients With HER2 IHC3+ Advanced Colorectal Cancer Who Progressed After Treatment With Oxaliplatin, Irinotecan and Fluoropyrimidine-Based Drugs

This is a Phase III, randomized, open-label, active-controlled, multicenter study designed to evaluate the efficacy and safety of Injection TQB2102 compared with investigator's choice of treatment in subjects with Human Epidermal Growth Factor Receptor 2 (HER2) ImmunoHistoChemistry score 3 (IHC3+) advanced colorectal cancer who have failed prior treatment with oxaliplatin, irinotecan, and fluoropyrimidine-based regimens. The primary endpoint of this study is progression-free survival (PFS) as assessed by an Independent Review Committee (IRC). The key secondary endpoint is overall survival (OS). Other secondary endpoints include investigator-assessed PFS, objective response rate (ORR), duration of response (DOR), disease control rate (DCR), time to response (TTR), safety, and quality of life scores. Approximately 142 subjects are planned to be enrolled. Eligible subjects will be randomly assigned in a 1:1 ratio to the experimental group or the control group.