Long-Term Outcomes of dMMR/MSI-H Rectal Cancer Treated With Anti–PD-1–Based Immunotherapy as Curative-Intent Treatment

Patients with dMMR/MSI-H locally advanced or low-lying rectal cancer who achieved cCR following anti-PD-1-based therapy had promising long-term outcomes. A prospective clinical trial with a larger sample size is required to further validate these findings.