Clinical Study on the First-line Treatment of Advanced Colorectal Cancer With Simultaneous Infusion of Levozolinate for Injection and 5-FU

Inclusion criteria

• The subjects voluntarily joined this study and signed the informed consent form.
• Age: 18 to 75 years old, gender not limited;
• ECOG PS score: 0-2 points
• Patients with unresectable or metastatic colorectal cancer confirmed by histology or cytology, where the primary tumor location and the status of RAS and BRAF are known;
• No previous treatment for unresectable or metastatic lesions has been received;
• There is at least one measurable lesion in accordance with the RECIST 1.1 standard;
• In the pre-treatment examination indicators, there was no serious hematopoietic function abnormality, and the functions of the heart, lungs, liver and kidneys were basically normal.
• Hemoglobin (Hb) ≥70 g/L;
• White blood cell count (WBC) ≥3.0×109/L; Neutrophil count (NEUT) ≥1.5×109/L;
• Platelet count (PLT) ≥100×109/L;
• Liver function (aspartate aminotransferase AST or alanine aminotransferase ALT) level ≤2.5 times the upper limit of normal value (ULN); Renal function (serum creatinine sCr) level ≤1.5 times the upper limit of the normal value (ULN). Total bilirubin (TBIL) ≤1.5 times the upper limit of the normal value (ULN).
• The expected survival period is more than three months.

Exclusion criteria

• Those who have been confirmed to be allergic to the test drug and/or its excipients;
• Those with contraindications to chemotherapy;
• Colorectal cancer patients with MSI-H or dMMR;
• Pregnant or lactating women;
• There is a history of other malignant tumors in the past;
• Those with systemic internal diseases and mental disorders who are not suitable for chemotherapy;
• Patients who were determined by the researchers to be unsuitable for inclusion in this study.