Neoadjuvant Triplet Chemotherapy Regimen in Patients With Locally Advanced Rectal Cancer

Inclusion Criteria:

1. Histologically confirmed locally advanced rectal cancer;
2. 18-70 years ；
3. Clinicalstage:T3,4a,N0,M0;T1-4a,N+,M0;
4. Tumor from anus \>5cm and ≤15cm;
5. ECOG=0-1;
6. Available organ function:ALT≤1.5xULN;AST≤1.5xULN;TBIL≤1.0xULN; NEUT≥2×109/L;PLT≥100×109/L;Hb≥90g/L;Creatinine≤1.0xULN;
7. Informed consent;
8. UGT1A1:UGT1A1\*1/UGT1A1\*1,UGT1A1\*1/UGT1A1\*28,UGT1A1\*1/UGT1A1\*6;

Exclusion Criteria:

1. Clinical stage T4b or unresectable disease;
2. History of pelvic radiotherapy;
3. History of chemotherapy within 5 years;
4. History of chronic diarrhea;
5. Tumor causes intestinal obstruction, intestinal perforation, and severe bleeding;
6. Hepatitis B surface antigen positive; Hepatitis C virus infection; Cirrhosis of the liver for any cause;
7. UGT1A1:UGT1A1\*28/UGT1A1\*28,UGT1A1\*6/UGT1A1\*6;
8. Other cancers in the past 5 years, except for cervical carcinoma in situ or non-melanoma skin cancer;
9. Myocardial infarction (in the last 6 months), severe instability angina, congestive heart failure; interstitial pneumonia,pulmonary fibrosis, uncontrolled diabetes, renal insufficiency;
10. Mental illness;Pregnant or lactating women;