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NCT06958419

Node-Sparing Short-Course Radiotherapy Plus Chemotherapy, Bevacizumab and PD-1 Inhibitor in Metastatic pMMR/MSS Colorectal Cancer (MODIFI-CRC)

Recruiting now Phase 2, PHASE3 Last updated 7 August 2025
What this trial tests

Phase 2, PHASE3 trial testing Node-Sparing Radiotherapy plus first-line therapy in Immune Checkpoint Therapy in 286 participants. Currently enrolling.

Timeline
1 May 2025
Primary endpoint
31 December 2030
31 December 2031

Quick facts

Lead sponsorSixth Affiliated Hospital, Sun Yat-sen University
PhasePhase 2, PHASE3
StatusRecruiting now
Study typeINTERVENTIONAL
Allocationrandomized
Designparallel
Maskingnone
Primary purposetreatment
Enrollment286
Start date1 May 2025
Primary completion31 December 2030
Estimated completion31 December 2031
Sites1 location across China

Drugs / interventions tested

Conditions studied

Sponsor

Sixth Affiliated Hospital, Sun Yat-sen University

Who can join

Adults 18 to 75, any sex, with Immune Checkpoint Therapy or Radiotherapy. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The current standard first-line treatment for metastatic colorectal cancer is chemotherapy combined with targeted therapy, yet the prognosis remains poor. Although combining immunotherapy, anti-angiogenic agents, and chemotherapy has shown some efficacy in MSS/pMMR metastatic patients, progression-free survival (PFS) remains suboptimal. Radiotherapy-particularly high-dose radiotherapy-can enhance tumor antigen release and potentially improve the response of MSS/pMMR colorectal cancer to PD-1 inhibitors. Tumor-draining lymph nodes (TDLNs) are key sites for PD-1-mediated anti-tumor activity, but radiation-induced damage and fibrosis may impair their immune function. Prior studies have reported a remarkable pathologic complete response (pCR) rate of 77.8% using node-sparing radiotherapy in locally advanced rectal cancer. This phase II/III study aims to evaluate whether node-sparing modified short-course radiotherapy combined with chemotherapy, bevacizumab, and PD-1 blockade can improve objective response rate (ORR) in phase II and progression-free survival (PFS) in phase III, together with treatment tolerance, and overall prognosis in patients with pMMR/MSS metastatic colorectal cancer.

Publications & conference data

No peer-reviewed publications indexed yet for this trial.

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Other trials of Node-Sparing Radiotherapy plus first-line therapy

Trials testing the same drug.

Other recruiting trials for Immune Checkpoint Therapy

Currently open trials in the same condition.

Other Sixth Affiliated Hospital, Sun Yat-sen University trials

Trials by the same sponsor.

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Data sources for this page

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