Status:

NOT_YET_RECRUITING

Neoadjuvant Radiochemotherapy Combined With QL1706 for Low Rectal Cancer

Lead Sponsor:

Changhai Hospital

Conditions:

Rectal Cancer

Eligibility:

All Genders

18-75 years

Phase:

EARLY_PHASE1

Brief Summary

This study investigates the efficacy of neoadjuvant radiotherapy combined with QL1706 in MSS-type low-grade rectal cancer. This study is a prospective multicohort study, with cohort 1 intended to incl...

Eligibility Criteria

Inclusion

  • Patients willing to receive neoadjuvant therapy.
  • Aged 18-75 years, regardless of gender.
  • Diagnosed with low-lying rectal adenocarcinoma (tumor located ≤7 cm from the anal verge) via colonoscopy, endorectal ultrasound, and pelvic high-resolution MRI, without distant metastasis.
  • Histopathologically confirmed rectal adenocarcinoma.
  • Good patient compliance, able to attend follow-up visits as required.
  • ECOG performance status score of 0-1.
  • Laboratory tests meeting the following criteria:
  • i. WBC ≥3.5×10\^9/L, ANC ≥1.8×10\^9/L, platelets ≥100×10\^9/L, hemoglobin ≥100 g/L.
  • ii. INR ≤1.5, APTT ≤1.5×ULN, or PTT ≤1.5×ULN. iii. Total bilirubin ≤1.25×ULN; ALT/AST ≤5×ULN. iv. 24-hour creatinine clearance ≥50 mL/min or serum creatinine ≤1.5×ULN.
  • Voluntary signed informed consent.

Exclusion

  • History of malignant colorectal tumors.
  • Patients requiring emergency surgery (e.g., intestinal obstruction, perforation, or hemorrhage).
  • Known allergy to capecitabine, oxaliplatin, PD-L1 inhibitors, CTLA-4 inhibitors, or related drugs.
  • Histopathology indicating poorly differentiated adenocarcinoma or signet ring cell carcinoma.
  • Unstable systemic diseases, including but not limited to:
  • Severe infection, uncontrolled diabetes, refractory hypertension, unstable angina, cerebrovascular accident, myocardial infarction, congestive heart failure, life-threatening arrhythmias, or severe hepatic/renal/metabolic disorders.
  • Conditions (e.g., psychiatric disorders, substance abuse) that may increase treatment risk, compromise compliance, or confound study results.
  • Participation in another interventional clinical trial or use of investigational drugs within 30 days prior to screening.
  • Pregnancy, lactation, or refusal to use effective contraception during the study.
  • Other conditions deemed unsuitable by the investigator.

Key Trial Info

Start Date :

May 20 2025

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

March 1 2035

Estimated Enrollment :

60 Patients enrolled

Trial Details

Trial ID

NCT06931873

Start Date

May 20 2025

End Date

March 1 2035

Last Update

April 17 2025

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