Safety Study of GC1118 (Recombinant Human Anti-EGFR Antibody) in Patients With Advanced Solid Cancer

An open-label, single-arm, multi-center, phase 1, dose-escalation study will be conducted to define the MTD/RP2D, safety, PK, immunogenicity and antitumor activity of GC1118 in patients with refractory disease for whom no standard therapy is available. This study is in three parts: a dose escalation segment (Part A), a cohort expansion (Part B) and biweekly administration(Part C). In part A, a dose escalation schema will be applied in dose level cohorts. GC1118 will be administered weekly on Study Day 1, 8, 15, and 22 of each 28-day cycle by IV infusion. Dose escalation may occur as described in the study protocol. Once the MTD has been established during Part A, the MTD cohort will be expanded in part B. And GC1118 will be administered biweekly on Study Day 1, 15 each 28-day cycle by IV infusion in part C. Study assessments will include AE monitoring including physical examination, vital signs and clinical laboratory tests, ECG monitoring, PK analysis of serum GC1118, an assessment of potential anti-GC1118 antibody response and an exploration of potential prognostic and pharmacodynamic biomarkers. Tumor response assessments using Study Day 36 CT/MRI scans will be performed approximately five weeks after the first GC1118 dose for each patient (Part A only). Patients with evidence of disease regression (partial or complete response or stable disease by RECIST criteria) will be allowed to continue therapy at the same dose. Subsequent cycles will consist of administration of GC1118 on Day 1, 8, 15, and 22 of each 28-day cycle with tumor evaluation every other cycle (approximately every 8 weeks) in part A,B and Day 1, 15 of each 28-day cycle with tumor evaluation every other cycle (approximately every 8 weeks) in part C.