Prevalence and impact of molecular variation in the three-prime repair exonuclease 1 TREX1 and its implications for oncology

Our findings provide novel insight into the role of TREX1 molecular variation in cancer, where genetic or epigenetic loss of TREX1 activity may improve susceptibility to treatment. However, TREX1 gene deletion in tumors was associated with unfavorable patient outcomes, most likely due its frequent co-occurrence with the loss of the entire 3p chromosomal arm, which contains known cancer-related genes.