Clinical Research Directory

SCRT Based iTNT vs. LCRT Based TNT for MSS Locally Advanced Rectal Cancer

In this prospective, multicentre, randomized phase III trial, 612 locally advanced rectal cancer (LARC, T3-4/N+M0) patients with at least one high-risk features (lower location (≤5cm), cT4, cN2, MRF+, EMVI+, TD+) will be included, and randomly assigned to TNT group and iTNT group (1:1). TNT group receives long-course chemoradiotherapy (50Gy/25Fx concurrent with oral capecitabine) followed by 6 cycles of CAPOX. iTNT group receives short-course radiotherapy (25Gy/5Fx) followed by 6 cycles of Serplulimab combined with CAPOX. After the efficacy evaluation, the patients who achieves clinical complete response (cCR) will be managed by a watch and wait (W\&W) protocol and non-cCR patients will be recommended surgery. The primary endpoint is 3-year event-free survival rate (3yEFS%). The secondary endpoints include the complete response (CR, pathological complete response \[pCR\] plus cCR) rate, 3-year organ preservation rate, 3-year disease-free survival rate (3yDFS%), 3-year local recurrence free survival rate (3yLRFS%), 3-year distant metastasis free survival rate (3yDMFS%), 3-year overall survival rate (3yOS%), grade 3-4 acute adverse effects (AE) rate, rate of surgical complications, anal functions and quality of life, etc.

A Phase II Study of Sintilimab Combined With Ipilimumab N01, Cetuximab and Dabrafenib in Patients With Microsatellite-Stable, BRAF V600E-Mutated Metastatic Colorectal Cancer

Colorectal cancer (CRC) is the second leading cause of cancer-related death globally. BRAF V600E mutations occur in approximately 12% of metastatic CRC (mCRC) patients, conferring an extremely poor prognosis with a median overall survival (OS) of only 11 months for standard chemotherapy. Most BRAF V600E-mutant mCRC are microsatellite stable (MSS) and do not benefit from single-agent PD-1/PD-L1 inhibition. Preclinical and clinical evidence indicates that BRAF inhibition in combination with EGFR blockade can induce DNA damage, trigger a deficient mismatch repair (dMMR) phenotype, and increase tumor mutational burden (TMB), thereby sensitizing MSS tumors to immune checkpoint inhibition. This provides a strong rationale for combining BRAF/EGFR inhibitors with anti-PD-1 and anti-CTLA-4 immunotherapy. This is a single-arm, open-label, Phase II clinical trial. The primary objective is to evaluate the efficacy and safety of the triplet combination of sintilimab (anti-PD-1), ipilimumab N01 (anti-CTLA-4), cetuximab (anti-EGFR), and dabrafenib (BRAF inhibitor) in patients with MSS, BRAF V600E-mutant mCRC.