ArticleThe Journal of clinical investigation2026
TMPRSS2:ERG-directed radiosensitization: exploiting DNA repair rewiring in gene fusion-positive prostate cancer.
Article in The Journal of clinical investigation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
The TMPRSS2:ERG gene fusion is a truncal oncogenic event in a large subset of prostate cancers, yet its clinical relevance has remained unclear. In this issue of the JCI, Köcher et al. have demonstrated that ERG overexpression in human prostate cancer cells rewired DNA double-strand break repair toward a poly(ADP-ribose) polymerase 1-dependent (PARP1-dependent) alternative end-joining pathway without disrupting canonical repair. This repair bias created a conditional dependency on PARP1 that was exposed by radiotherapy, rendering ERG-positive tumors selectively sensitive to PARP inhibition-mediated radiosensitization. The tumor-selective cytotoxic effect of combined PARP1 inhibition and irradiation was corroborated in human-derived prostate cancer organoids. These findings establish ERG as a predictive biomarker for precision radiotherapy and highlight a tumor-selective strategy to enhance radiotherapeutic efficacy in prostate cancer.
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