[Correspondence] Genomic biomarkers for precision radiation medicine

Radiotherapy provides local control and cure for many tumour types. Precision radiation medicine seeks to improve the therapeutic ratio of radiotherapy through greater local control and reduced toxicity. Modern radiotherapy techniques already use considerable physical precision, bolstered by technological advances and computational power; however, biological precision has lagged. Radiotherapy dose is currently guided primarily by tumour histology and local anatomy, and genomic features are not commonly considered.

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