Parent-of-origin-specific allelic associations among 106 genomic loci for age at menarche.

Nature
Authors
Keywords
Abstract

Age at menarche is a marker of timing of puberty in females. It varies widely between individuals, is a heritable trait and is associated with risks for obesity, type 2 diabetes, cardiovascular disease, breast cancer and all-cause mortality. Studies of rare human disorders of puberty and animal models point to a complex hypothalamic-pituitary-hormonal regulation, but the mechanisms that determine pubertal timing and underlie its links to disease risk remain unclear. Here, using genome-wide and custom-genotyping arrays in up to 182,416 women of European descent from 57 studies, we found robust evidence (P  5 × 10(-8)) for 123 signals at 106 genomic loci associated with age at menarche. Many loci were associated with other pubertal traits in both sexes, and there was substantial overlap with genes implicated in body mass index and various diseases, including rare disorders of puberty. Menarche signals were enriched in imprinted regions, with three loci (DLK1-WDR25, MKRN3-MAGEL2 and KCNK9) demonstrating parent-of-origin-specific associations concordant with known parental expression patterns. Pathway analyses implicated nuclear hormone receptors, particularly retinoic acid and γ-aminobutyric acid-B2 receptor signalling, among novel mechanisms that regulate pubertal timing in humans. Our findings suggest a genetic architecture involving at least hundreds of common variants in the coordinated timing of the pubertal transition.

Year of Publication
2014
Journal
Nature
Volume
514
Issue
7520
Pages
92-7
Date Published
2014 Oct 02
ISSN
1476-4687
URL
DOI
10.1038/nature13545
PubMed ID
25231870
PubMed Central ID
PMC4185210
Links
Grant list
R01 NS017950 / NS / NINDS NIH HHS / United States
MC_UU_12013/3 / Medical Research Council / United Kingdom
G1000143 / Medical Research Council / United Kingdom
MR/J012165/1 / Medical Research Council / United Kingdom
R01 AG041517 / AG / NIA NIH HHS / United States
UL1 TR001108 / TR / NCATS NIH HHS / United States
102215 / Wellcome Trust / United Kingdom
MC_UU_12015/1 / Medical Research Council / United Kingdom
MC_U106179471 / Medical Research Council / United Kingdom
MC_UU_12015/2 / Medical Research Council / United Kingdom
MC_PC_15018 / Medical Research Council / United Kingdom
MC_U106179472 / Medical Research Council / United Kingdom
P50 CA116201 / CA / NCI NIH HHS / United States
G0401527 / Medical Research Council / United Kingdom
MC_UU_12013/1 / Medical Research Council / United Kingdom
G0701863 / Medical Research Council / United Kingdom
098381 / Wellcome Trust / United Kingdom
10118 / Cancer Research UK / United Kingdom
G9815508 / Medical Research Council / United Kingdom
10124 / Cancer Research UK / United Kingdom
U01 AG049505 / AG / NIA NIH HHS / United States