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PLoS Genet DOI:10.1371/journal.pgen.1004304

Allelic expression of deleterious protein-coding variants across human tissues.

Publication TypeJournal Article
Year of Publication2014
AuthorsKukurba, KR, Zhang, R, Li, X, Smith, KS, Knowles, DA, Tan, MHow, Piskol, R, Lek, M, Snyder, M, MacArthur, DG, Li, JBilly, Montgomery, SB
JournalPLoS Genet
Date Published2014 May
KeywordsAlleles, Exome, Humans, Polymerase Chain Reaction, Proteins

Personal exome and genome sequencing provides access to loss-of-function and rare deleterious alleles whose interpretation is expected to provide insight into individual disease burden. However, for each allele, accurate interpretation of its effect will depend on both its penetrance and the trait's expressivity. In this regard, an important factor that can modify the effect of a pathogenic coding allele is its level of expression; a factor which itself characteristically changes across tissues. To better inform the degree to which pathogenic alleles can be modified by expression level across multiple tissues, we have conducted exome, RNA and deep, targeted allele-specific expression (ASE) sequencing in ten tissues obtained from a single individual. By combining such data, we report the impact of rare and common loss-of-function variants on allelic expression exposing stronger allelic bias for rare stop-gain variants and informing the extent to which rare deleterious coding alleles are consistently expressed across tissues. This study demonstrates the potential importance of transcriptome data to the interpretation of pathogenic protein-coding variants.


Alternate JournalPLoS Genet.
PubMed ID24786518
PubMed Central IDPMC4006732
Grant ListP30 CA124435 / CA / NCI NIH HHS / United States