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Safety and Efficacy of PD-1 ± mFOLFOX6 Neoadjuvant Therapy in Local Advanced sMPCC

NCT06002789 · Status: RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 17

Last updated 2026-04-27

No results posted yet for this study

Summary

At present, radical resection ± preoperative neoadjuvant chemotherapy for colorectal cancer is still the standard comprehensive treatment. In recent years, immunotherapy of PD-1 monoclonal antibody has a significant effect in the second-line/first-line treatment of dMMR/MSI-H advanced colorectal cancer and the neoadjuvant treatment of early colorectal cancer. Synchronous multiple primary colorectal cancer (sMPCC) is a relatively rare type of colorectal cancer (CRC) that refers to the simultaneous occurrence of 2 or more independent primary malignancies in the colon or rectum. The recent large-scale, single-center retrospective study of the investigator showed that compared with single primary colorectal cancer (SPCRC)patients, the incidence of dMMR/MSI-H was significantly higher in sMPCC patients. Besides, a certain proportion of sMPCC patients could both have MSI and MSS tumors at the same time. There is no standard regimen for this patients so far. This study intends to treat the MSI-H/MSS (dMMR/pMMR) mixed sMPCC patients with combination of mFOLFOX6+PD-1 monoclonal antibody neoadjuvant therapy, and treat the all-MSI-H (dMMR) sMPCC patients with single-drug PD-1 monoclonal antibody neoadjuvant therapy. Given the current gaps in the guideline, the investigator intends to take the lead in carrying out this open, multi-center, prospective clinical phase II study. This study might provide a clinical evidence for individual treatment of sMPCC patients, in preserving the functions and organs to the greatest extent.

Conditions

Interventions

DRUG

MSI-H/MSS (dMMR/pMMR) mixed sMPCC: combination of mFOLFOX6+PD-1 monoclonal antibody neoadjuvant therapy

For MSI-H/MSS (dMMR/pMMR) mixed sMPCC, a combination of neoadjuvant chemotherapy with mFOLFOX6 and immunotherapy with PD-1 monoclonal antibody are applied.

DRUG

All-MSI-H (dMMR) sMPCC: single-drug PD-1 monoclonal antibody neoadjuvant therapy

For all-MSI-H (dMMR) sMPCC, single-drug PD-1 monoclonal antibody immunotherapy is applied.

Sponsors & Collaborators

  • Sixth Affiliated Hospital, Sun Yat-sen University

    lead OTHER

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2022-05-01
Primary Completion
2027-09-01
Completion
2028-12-01

Countries

  • China

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06002789 on ClinicalTrials.gov