The impact of sex on alternative splicing

  • Karlebach G
  • Veiga D
  • Mays A
  • et al.
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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license. Over 95% of human genes undergo alternative splicing (AS) in a developmental, tissue-specific, or signal transduction-dependent manner. A number of factors including binding of cis-acting sequences by RNA-binding proteins (RBPs) are known to affect AS, but the combinatorial mechanisms leading to the distribution of spliced isoforms remain largely unstudied. Here, in 9011 samples from 532 individuals across 53 tissues from the Genotype-Tissue Expression (GTEx) resource, we identified 4,135 genes with sex-biased expression and 5,925 sex-biased AS events. We find that factors including escape from X-chromosomal inactivation, presence of Alu elements, and oestrogen receptor binding sites affect sex-biased AS. We utilize hierarchical Bayesian modelling to characterize the interactions of exon skipping, gene expression, and RBPs, and demonstrate two categories of sex-biased AS that differ with respect to splice site scores, gene expression, RBP levels, and skipping/inclusion ratio.




Karlebach, G., Veiga, D. F. T., Mays, A. D., Kesarwani, A. K., Danis, D., Kararigas, G., … Robinson, P. N. (2018). The impact of sex on alternative splicing. BioRxiv.

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