A Prospective, Randomized, Phase II Trial of MR-guided Adaptive Radiotherapy Combined With PD-1 Antibody and CAPOX for Locally Advanced Rectal Cancer
NeoPulsar is a prospective, randomized phase II trial. 46 LARC (T3-4/N+M0, distance from anal verge ≤12cm) patients will be treated with MR-guided adaptive radiotherapy (30Gy/6Fx) combined with 6 cycles of Toripalimab and CAPOX. TME surgery is scheduled after TNT. The primary endpoint is pathological complete response (pCR) rate. The secondary endpoints include the grade 3-4 acute adverse effects (AE) rate, anal function, surgical complication, 3-year LRFS rate, 3-year DFS rate, 3-year OS rate, etc.
• Age 18-70 years old, male or female
• Pathologically confirmed rectal adenocarcinoma
• The distance from anal verge ≤ 10 cm
• Clinical stage T3-4 and/or N+
• No evidence of distance metastases
• MSI/MMR status: MSS/pMMR
• Karnofsky score \>=70
• Adequate organ function and have no contraindications to surgery, radiochemotherapy, or immunotherapy
• No chemotherapy or any other anti-tumor therapy prior to enrollment
⁃ No immunotherapy prior to enrollment
⁃ With good compliance during the study
⁃ Signed written informed consent