Integrated data analysis reveals uterine leiomyoma subtypes with distinct driver pathways and biomarkers

• The clinical and scientific community widely regards uterine leiomyomas as a single entity, although evidence of genetic heterogeneity exists. The aim of this study was to explore transcriptional differences between leiomyomas harboring different genetic alterations, including high mobility group AT-hook 2 rearrangements, mediator complex subunit 12 mutations, biallelic inactivation of fumarate hydratase, and collagen, type IV, alpha 5-collagen, type IV, alpha 6 deletions. The evidence presented herein strongly suggests that specific driver mutations are the major determinants of expression changes in leiomyomas. Here we highlight subtype-specific expression differences in key driver pathways and emphasize the utility of stratification in leiomyoma research. Finally, we offer a set of candidate biomarkers that will facilitate the molecular classification of leiomyomas.

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