Low-Dose Intestinal Irradiation Enhances the Efficacy and Prognosis of PD-1 Blockade in Metastatic Non–Small Cell Lung Cancer

ILDR influences the efficacy of PD-1 blockade in patients with mNSCLC, particularly when SIMRD is maintained within the 1-3 Gy range, likely through modulation of the gut microbiota-metabolite-immune axis.