KangDuo surgical robot KD-SR-01 versus da Vinci Xi in robot-assisted colorectal cancer resection: oncologic outcomes at three years in a multicenter randomized trial.

Authors

Zhanpeng Cen, Zhen Sun, Tianyi Ma, Donglin Du, Lai Xu, Junyang Lu, Zhengqiang Wei, Guiyu Wang, Yi Xiao

Published in

Journal of robotic surgery. Volume 20. Issue 1. Sep 01, 2026. Epub Sep 01, 2026.

Abstract

Earlier results from a multicenter randomized trial showed that colorectal cancer resection with KangDuo surgical robot KD-SR-01 (KD) and da Vinci Xi (DV) had similar perioperative and pathological outcomes, whereas long-term oncologic outcomes remained uncertain.
Three-year follow-up data were analyzed for the full 100-patient cohort of the multicenter randomized trial (KD, n = 50; DV, n = 50). The long-term endpoints were disease-free survival (DFS) and overall survival (OS).
Median follow-up in both groups was 37 months (interquartile range [IQR], 34-40). Kaplan-Meier-estimated 3-year DFS rates were 85.3% for KD (95% confidence interval [CI], 71.5%-92.7%) and 85.5% for DV (95% CI, 71.9%-92.8%, log-rank P = 0.995). Kaplan-Meier-estimated 3-year OS rates were 100.0% for KD (95% CI, 100.0%-100.0%) and 94.0% for DV (95% CI, 82.4%-98.0%, log-rank P = 0.606). After covariate adjustment, the DFS hazard ratio (HR) comparing KD with DV was 0.918 (95% CI, 0.301-2.798; P = 0.881).
At 3 years, no significant between-group differences in DFS or OS were detected between patients assigned to KD-SR-01 and da Vinci Xi for colorectal cancer resection.

PMID:
42678457
Bibliographic data and abstract were imported from PubMed on 02 Sep 2026.

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