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Combinatorial delivery of low-dose irradiation and immunotherapy to patients with immune-excluded tumors effectively enhances CD8+ T cell functionality

2025-05-12 oncology Title + abstract only
View on medRxiv
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Immune-checkpoint blockade (ICB) has shown significant efficacy across various tumor types. However, tumors with low intraepithelial T-cell infiltration, often referred to as "cold" tumors, are expected to yield poor responsiveness to ICB. We investigated the potential of low-dose radiotherapy (LDRT) to enhance ICB responses in 25 patients with multimetastatic immune-excluded solid tumors through a multi-cohort phase I clinical trial (RACIN). Primary endpoint was to determine the safety and tole...

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