Phase II Exploratory Study of Irinotecan Liposomes Combined with Cetuximab + Vermofenib in First-line Failure of Advanced RAS Wild /BRAF Mutated Colorectal Cancer
Efficacy and safety of irinotecan liposomes combined with cetuximab + vermofenib in first-line failure of advanced RAS wild /BRAF mutated colorectal cancer, Exploratory analysis of biomarkers (including but not limited to ctDNA, immune microenvironment indicators, tumor mutation load, lymphocyte subsets, cytokines, gut microbes, and others) in relation to efficacy.
• at least 18 years of age;
• Colorectal adenocarcinoma was confirmed by histological or cytopathological examination, and RAS wild /BRAF V600E mutation was detected by PCR or NGS;
• Failure or intolerance of standard first-line treatment. First-line regimens including oxaliplatin and/or irinotecan in combination with fluorouracil in patients with MSS; For BRAF V600E mutated patients with MSI-H, first-line immunotherapy with PD-1 or PD-L1 is required;
• At least one measurable lesion according to RECIST v1.1;
• ECOG score is 0\
⁃ 2;
• Good bone marrow and organ function: ① Neutrophils (ANC) ≥1.5×109/L, platelets (PLT) ≥100×109/L, hemoglobin (Hb) ≥90g/L, white blood cells (WBC) ≥3.0×109/L, albumin (ALB) ≥32 g/L, and no bleeding tendency; ② AST, ALT and alkaline phosphatase (ALP) were all ≤2.5× upper limit of normal range (ULN), and ≤5×ULN when liver metastases occurred; Total bilirubin ≤1.5×ULN; Serum creatinine (Cr) ≤1.5×ULN or creatinine clearance ≥60 ml/min (calculated according to Cockroft-Gault);
• Expected survival ≥3 months;
• Can understand the situation of this study, patients and (or) legal representatives voluntarily agree to participate in this study and sign informed consent.