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OncoMatch/Clinical Trials/NCT06266832

The Efficacy and Safety of Short-course Radiation Combined With Adebrelimab and CAPEOX Neo-adjuvant Therapy for Organ-retention in Patients With MSS/pMMR Ultra Low Rectal Adenocarcinoma

Is NCT06266832 recruiting? Yes, currently enrolling (May 2026). This Phase 2 trial studies multiple treatments including Adebrelimab and Oxaliplatin for rectal adenocarcinoma.

Phase 2RecruitingSir Run Run Shaw HospitalNCT06266832Data as of May 2026

Treatment: Adebrelimab · Oxaliplatin · CapecitabineTo evaluate the efficacy, safety and organ retention rate of short-course radiation combined with Adebrelimab and CAPEOX neoadjuvant therapy in patients with MSS/pMMR ultra low rectal adenocarcinoma.

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Extracted eligibility criteria

Cancer type

Colorectal Cancer

Biomarker criteria

Required: MSH2 proficient MMR

MMR protein detection or MSI gene detection of rectal cancer specimens confirmed pMMR or MSS before treatment

Required: MSH6 proficient MMR

MMR protein detection or MSI gene detection of rectal cancer specimens confirmed pMMR or MSS before treatment

Required: MLH1 proficient MMR

MMR protein detection or MSI gene detection of rectal cancer specimens confirmed pMMR or MSS before treatment

Required: PMS2 proficient MMR

MMR protein detection or MSI gene detection of rectal cancer specimens confirmed pMMR or MSS before treatment

Required: MSH2 microsatellite stable

MMR protein detection or MSI gene detection of rectal cancer specimens confirmed pMMR or MSS before treatment

Required: MSH6 microsatellite stable

MMR protein detection or MSI gene detection of rectal cancer specimens confirmed pMMR or MSS before treatment

Required: MLH1 microsatellite stable

MMR protein detection or MSI gene detection of rectal cancer specimens confirmed pMMR or MSS before treatment

Required: PMS2 microsatellite stable

MMR protein detection or MSI gene detection of rectal cancer specimens confirmed pMMR or MSS before treatment

Disease stage

Required: Stage I, II, III

Excluded: Stage IV

Performance status

ECOG 0–1(Restricted strenuous activity)

Prior therapy

No prior treatment (treatment-naive required)
Max 0 prior lines

Lab requirements

Blood counts

White blood cell count >3.5×10^9/L, absolute value of neutrophils >1.8×10^9/L, platelet count ≥75×10^9/L, hemoglobin ≥100g/L

Kidney function

24h creatinine clearance >50mL/min or serum creatinine <1.5 times the upper limit of normal

Liver function

Total bilirubin ≤ 1.25 times the upper limit of normal; ALT and AST < 5 times the upper limit of normal

Laboratory inspections must meet the following standards: White blood cell count >3.5×10^9/L, absolute value of neutrophils >1.8×10^9/L, platelet count ≥75×10^9/L, hemoglobin ≥100g/L; INR≤1.5, and APTT≤1.5 times the upper limit of normal or partial prothrombin time (PT) ≤1.5 times the upper limit of normal; Total bilirubin ≤ 1.25 times the upper limit of normal; ALT and AST < 5 times the upper limit of normal; 24h creatinine clearance >50mL/min or serum creatinine <1.5 times the upper limit of normal.

Structured fields extracted by AI. May contain errors — verify against the official protocol.

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