Redefining radiotherapy: the gut as an active target in Immuno-Oncology.

Deutsch, Eric; Levy, Antonin; Zitvogel, Laurence · Clin Cancer Res · 2026

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Abstract

Low-dose intestinal irradiation challenges the long-standing view of the gut as a radiation-sensitive organ to avoid. Clinical and mechanistic data suggest that targeted exposure of the small intestine within a 1 to 3 Gy window can remodel the microbiome and enhance systemic antitumor immunity.