The Phase 1b/IIa, Open-label, Dose Escalation and Dose Expansion to Evaluate Safety, Tolerability, and Preliminary Efficacy of the Combination of HCB101, Cetuximab/Bevacizumab, and FOLFOX/FOLFIRI in Advanced or Metastatic Colorectal Cancer

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5 mg/kg IV infusion, Day 1, Every 2 weeks

"* Initial dose: 400 mg/m² IV infusion, over \>2 hours, Day 1~* Maintenance dose: 250 mg/m² IV infusion, over 60 minutes, Day 1, weekly OR 500 mg/m² IV infusion, over \>2 hours, Day 1, every 2 weeks"

Irinotecan: 180 mg/m² IV infusion over 30-90 minutes, Day 1, Every 2 weeks Folinic acid (Leucovorin): 400 mg/m² IV infusion over 2 hours, Day 1, Every 2 weeks 5-Fluorouracil (5-FU): 400 mg/m² IV bolus, Day 1; then 1200 mg/(m²·day) × 2 days continuous IV infusion (total 2400 mg/m² over 46-48 hours, Every 2 weeks

Folinic acid (Leucovorin): 400 mg/m² IV infusion over 2 hours, Day 1, Every 2 weeks 5-Fluorouracil (5-FU): 400 mg/m² IV bolus, Day 1; then 1200 mg/(m²·day) × 2 days continuous IV infusion (total 2400 mg/m² over 46-48 hours), Every 2 weeks Oxaliplatin: 85 mg/m² IV infusion over 2 hours, Day 1, Every 2 weeks