Rare variant contribution to the heritability of coronary artery disease.

View Abstract

Whole genome sequences (WGS) enable discovery of rare variants which may contribute to missing heritability of coronary artery disease (CAD). To measure their contribution, we apply the GREML-LDMS-I approach to WGS of 4949 cases and 17,494 controls of European ancestry from the NHLBI TOPMed program. We estimate CAD heritability at 34.3% assuming a prevalence of 8.2%. Ultra-rare (minor allele frequency ≤ 0.1%) variants with low linkage disequilibrium (LD) score contribute ~50% of the heritability. We also investigate CAD heritability enrichment using a diverse set of functional annotations: i) constraint; ii) predicted protein-altering impact; iii) cis-regulatory elements from a cell-specific chromatin atlas of the human coronary; and iv) annotation principal components representing a wide range of functional processes. We observe marked enrichment of CAD heritability for most functional annotations. These results reveal the predominant role of ultra-rare variants in low LD on the heritability of CAD. Moreover, they highlight several functional processes including cell type-specific regulatory mechanisms as key drivers of CAD genetic risk.

Investigators
Abbreviation
Nat Commun
Publication Date
2024-10-09
Volume
15
Issue
1
Page Numbers
8741
Pubmed ID
39384761
Medium
Electronic
Full Title
Rare variant contribution to the heritability of coronary artery disease.
Authors
Rocheleau G, Clarke SL, Auguste G, Hasbani NR, Morrison AC, Heath AS, Bielak LF, Iyer KR, Young EP, Stitziel NO, Jun G, Laurie C, Broome JG, Khan AT, Arnett DK, Becker LC, Bis JC, Boerwinkle E, Bowden DW, Carson AP, Ellinor PT, Fornage M, Franceschini N, Freedman BI, Heard-Costa NL, Hou L, Chen YI, Kenny EE, Kooperberg C, Kral BG, Loos RJF, Lutz SM, Manson JE, Martin LW, Mitchell BD, Nassir R, Palmer ND, Post WS, Preuss MH, Psaty BM, Raffield LM, Regan EA, Rich SS, Smith JA, Taylor KD, Yanek LR, Young KA, , Hilliard AT, Tcheandjieu C, Peyser PA, Vasan RS, Rotter JI, Miller CL, Assimes TL, de Vries PS, Do R