Reduced-dose Radiation Therapy for Stage IE Gastric Mucosa-Associated Lymphoid Tissue Lymphoma: A Multi-Institutional Prospective Study (KROG 16-18)

Definitive radiotherapy (RT) of 30 Gy or higher is commonly recommended to treat Helicobacter pylori-independent gastric mucosa-associated lymphoid tissue (MALT) lymphoma with an excellent disease control rate. However, the efficacy of reduced-dose RT has not yet been evaluated in a prospective cohort study. This multi-institutional study aimed to determine the role of reduced-dose RT in the treatment of stage IE gastric MALT lymphoma.