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. 2018 Jun 7;102(6):1204-1211.
doi: 10.1016/j.ajhg.2018.05.002. Epub 2018 May 31.

Quantifying the Impact of Rare and Ultra-rare Coding Variation across the Phenotypic Spectrum

Affiliations

Quantifying the Impact of Rare and Ultra-rare Coding Variation across the Phenotypic Spectrum

Andrea Ganna et al. Am J Hum Genet. .

Abstract

There is a limited understanding about the impact of rare protein-truncating variants across multiple phenotypes. We explore the impact of this class of variants on 13 quantitative traits and 10 diseases using whole-exome sequencing data from 100,296 individuals. Protein-truncating variants in genes intolerant to this class of mutations increased risk of autism, schizophrenia, bipolar disorder, intellectual disability, and ADHD. In individuals without these disorders, there was an association with shorter height, lower education, increased hospitalization, and reduced age at enrollment. Gene sets implicated from GWASs did not show a significant protein-truncating variants burden beyond what was captured by established Mendelian genes. In conclusion, we provide a thorough investigation of the impact of rare deleterious coding variants on complex traits, suggesting widespread pleiotropic risk.

Keywords: burden analysis; constraint genes; exome sequencing; phewas; rare variants; selection; ultra-rare variants.

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Figures

Figure 1
Figure 1
Variants Frequency Distribution across Different Ethnic Group and Gene Sets (A) Average number of variants per individual in n = 83,439 participants without neurodevelopmental/psychiatric disorders. We report the results separately for each ethnic group. (B) Ratio between PTV/Synonymous for each ethnic group. Abbreviations: Afr, African American; Eas, East Asian; Sas, South Asian; Amr, Latinos; Nfe, non-Finnish European; Asj, Ashkenazi Jewish; Fin, Finnish.
Figure 2
Figure 2
Association Analysis for Rare and Ultra-rare Variant Burden (A) Association between PI-PTV burden and continuous traits. We reported the association in standard deviations (SD) to allow for comparison across traits. In parentheses, we reported the number of individual included in the analysis for each trait. The p values are reported only for experiment-wise significant results (p < 2 × 10−3), highlighted in red. Bars indicate 95% confidence intervals. All the results are obtained from meta-analyzing study and ethnicity-specific associations. (B) Odds ratio for association between PI-PTV burden and dichotomous traits. In brackets, we reported the number of case and control subjects.
Figure 3
Figure 3
Signal Overlap between Rare Variants and GWAS-Derived Gene Sets (A) Association (SKAT test p value) in GWAS-derived gene sets (y axis) between rare PTVs and the phenotypes reported on the x axis. Each gene set is obtained using DEPICT to link SNPs derived from GWAS with p value < 5 × 10−8 and a candidate gene. In brackets we report the number of genes with at least one PTV in our dataset. p values are reported only for experiment-wise associations (p < 0.0003). (B) Association (SKAT test p value) in GWAS-derived gene sets (y axis) between rare PTVs + damaging missense and the phenotypes reported on the x axis.

References

    1. Amberger J.S., Bocchini C.A., Schiettecatte F., Scott A.F., Hamosh A. OMIM.org: Online Mendelian Inheritance in Man (OMIM®), an online catalog of human genes and genetic disorders. Nucleic Acids Res. 2015;43:D789–D798. - PMC - PubMed
    1. Landrum M.J., Lee J.M., Benson M., Brown G., Chao C., Chitipiralla S., Gu B., Hart J., Hoffman D., Hoover J. ClinVar: public archive of interpretations of clinically relevant variants. Nucleic Acids Res. 2016;44(D1):D862–D868. - PMC - PubMed
    1. Zuk O., Schaffner S.F., Samocha K., Do R., Hechter E., Kathiresan S., Daly M.J., Neale B.M., Sunyaev S.R., Lander E.S. Searching for missing heritability: designing rare variant association studies. Proc. Natl. Acad. Sci. USA. 2014;111:E455–E464. - PMC - PubMed
    1. Lek M., Karczewski K.J., Minikel E.V., Samocha K.E., Banks E., Fennell T., O’Donnell-Luria A.H., Ware J.S., Hill A.J., Cummings B.B., Exome Aggregation Consortium Analysis of protein-coding genetic variation in 60,706 humans. Nature. 2016;536:285–291. - PMC - PubMed
    1. Genovese G., Fromer M., Stahl E.A., Ruderfer D.M., Chambert K., Landén M., Moran J.L., Purcell S.M., Sklar P., Sullivan P.F. Increased burden of ultra-rare protein-altering variants among 4,877 individuals with schizophrenia. Nat. Neurosci. 2016;19:1433–1441. - PMC - PubMed

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