NCT07284992

SCRT VS LCRT Followed by PD-L1 Inhibitor Plus CAPEOX as TNT in Patients With LARC

Total Neoadjuvant Treatment With Short-course Radiotherapy Versus Long-course Radiotherapy Followed by PD-L1 Inhibitor Plus Capecitabine-Oxaliplatin in Patients With Locally Advanced Rectal Cancer: a Multi-centres, Open-label, Phase 2, Randomized Controlled Trial

• Status: Recruiting
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 208 (estimated)
• Sponsor: Shandong Provincial Hospital · Other Government
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

This is a multicenter, cohort, prospective study to evaluate the efficacy and safety of Adebrelimab combined with radiotherapy and chemotherapy as preoperative neoadjuvant therapy for patients with locally advanced rectal cancer. In the study, all subjects who meet the inclusion criteria will enter the short-term radiotherapy queue and the long-term radiotherapy queue at the ratio of 1:1. The short-term radiotherapy queue plans to receive Adebrelimab combined with short-term radiotherapy (5\*5Gy) and Capox chemotherapy as neoadjuvant therapy. The long-term radiotherapy queue plans to receive Adebrelimab combined with long-term radiotherapy (1.8gy × 25-28 times) and capox chemotherapy as neoadjuvant therapy. The TME surgery will be performed 2-3 weeks after the last neoadjuvant therapy is completed. If the surgery cannot be performed within the time window specified in the plan (such as delayed adverse reactions, etc.), the researcher will conduct the surgery according to the patients' requirements.The actual clinical conditions of the subjects were comprehensively considered.

Conditions

• Rectal Cancer
• Advanced Stage Colorectal Cancer
• Radiotherapy

Interventions

Type	Name	Description
COMBINATION_PRODUCT	short-term radiotherapy combined with Adebrelimab and capox	Radiotherapy protocol: 5 × 5Gy short-term radiotherapy (D1-5 in the first week) Immunotherapy regimen: Adebrelimab 1200 mg or 20 mg/kg, IV., administered on the first day of each chemotherapy cycle. Chemotherapy regimen: capox regimen: Oxaliplatin 130 mg/m2 IV D1 Capecitabine 1000 mg/m2 Po bid D1 ～ 14 Repeat every 3 weeks for 6 cycles The curative effect was evaluated 2-3 weeks after the completion of 6 cycles of chemotherapy. According to whether the CCR (clinical complete remission) was achieved, TME surgery was required if the CCR was not achieved; If CCR is achieved, TME operation can be performed according to the wishes of the patients. Local resection or observation through anal surgery requires close follow-up to explore the effectiveness and safety of the scheme.
COMBINATION_PRODUCT	long-term radiotherapy combined with Adebrelimab and capox	Radiotherapy regimen: long-term radiotherapy 1.8 × 25-28Gy, oral capecitabine in the same period: the standard dose is 825mg/m2, twice a day \[total dose 1650mg/(M2 · d)\], oral radiotherapy day, 5 days a week. Immunotherapy regimen: Adebrelimab 1200 mg or 20 mg/kg, IV., administered on the first day of each chemotherapy cycle. Chemotherapy regimen: capox regimen: Oxaliplatin 130 mg/m2 IV D1 Capecitabine 1000 mg/m2 Po bid D1 ～ 14 Repeat every 3 weeks for 6 cycles The curative effect was evaluated 2-3 weeks after the completion of 6 cycles of chemotherapy. According to whether the CCR (clinical complete remission) was achieved, TME surgery was required if the CCR was not achieved; If CCR is achieved, TME operation can be performed according to the wishes of the patients. Local resection or observation through anal surgery requires close follow-up to explore the effectiveness and safety of the scheme.

Timeline

• Start date: 2025-09-12
• Primary completion: 2028-11-30
• Completion: 2033-06-30
• First posted: 2025-12-16
• Last updated: 2025-12-16

Locations

1 site across 1 country: China