Analysis of shared heritability in common disorders of the brain.

Science
Authors
Keywords
Abstract

Disorders of the brain can exhibit considerable epidemiological comorbidity and often share symptoms, provoking debate about their etiologic overlap. We quantified the genetic sharing of 25 brain disorders from genome-wide association studies of 265,218 patients and 784,643 control participants and assessed their relationship to 17 phenotypes from 1,191,588 individuals. Psychiatric disorders share common variant risk, whereas neurological disorders appear more distinct from one another and from the psychiatric disorders. We also identified significant sharing between disorders and a number of brain phenotypes, including cognitive measures. Further, we conducted simulations to explore how statistical power, diagnostic misclassification, and phenotypic heterogeneity affect genetic correlations. These results highlight the importance of common genetic variation as a risk factor for brain disorders and the value of heritability-based methods in understanding their etiology.

Year of Publication
2018
Journal
Science
Volume
360
Issue
6395
Date Published
2018 06 22
ISSN
1095-9203
DOI
10.1126/science.aap8757
PubMed ID
29930110
PubMed Central ID
PMC6097237
Links
Grant list
K07 AG043587 / AG / NIA NIH HHS / United States
203249/Z/16/Z / WT_ / Wellcome Trust / United Kingdom
R01 MH100027 / MH / NIMH NIH HHS / United States
P01 AG026276 / AG / NIA NIH HHS / United States
MR/N008324/1 / MRC_ / Medical Research Council / United Kingdom
P30 AG021342 / AG / NIA NIH HHS / United States
P30 AG008017 / AG / NIA NIH HHS / United States
P30 AG010161 / AG / NIA NIH HHS / United States
MR/R024804/1 / MRC_ / Medical Research Council / United Kingdom
R01 AG041718 / AG / NIA NIH HHS / United States
G0401207 / MRC_ / Medical Research Council / United Kingdom
R01 NS017950 / NS / NINDS NIH HHS / United States
G0800637 / MRC_ / Medical Research Council / United Kingdom
MR/L501529/1 / MRC_ / Medical Research Council / United Kingdom
R01 AG054076 / AG / NIA NIH HHS / United States
K01 MH109782 / MH / NIMH NIH HHS / United States
UL1 TR002369 / TR / NCATS NIH HHS / United States
R25 MH077823 / MH / NIMH NIH HHS / United States
MR/L010305/1 / MRC_ / Medical Research Council / United Kingdom
Z99 AG999999 / ImNIH / Intramural NIH HHS / United States
MR/L501554/1 / MRC_ / Medical Research Council / United Kingdom
MC_UU_00024/1 / MRC_ / Medical Research Council / United Kingdom
U01 AG016976 / AG / NIA NIH HHS / United States
PDA/02/06/016 / DH_ / Department of Health / United Kingdom
P01 AG003991 / AG / NIA NIH HHS / United States
P50 AG005681 / AG / NIA NIH HHS / United States
P50 AG005136 / AG / NIA NIH HHS / United States
G0300189 / MRC_ / Medical Research Council / United Kingdom
U01 MH109536 / MH / NIMH NIH HHS / United States
R01 MH106490 / MH / NIMH NIH HHS / United States
R01 MH115961 / MH / NIMH NIH HHS / United States
P50 AG005133 / AG / NIA NIH HHS / United States
T32 MH076694 / MH / NIMH NIH HHS / United States
R01 MH085548 / MH / NIMH NIH HHS / United States
G0901310 / MRC_ / Medical Research Council / United Kingdom
U24 MH068457 / MH / NIMH NIH HHS / United States
MR/P005748/1 / MRC_ / Medical Research Council / United Kingdom
R00 MH101367 / MH / NIMH NIH HHS / United States
J-0901 / PUK_ / Parkinson's UK / United Kingdom
MC_G1000735 / MRC_ / Medical Research Council / United Kingdom
UKDRI-2002 / MRC_ / Medical Research Council / United Kingdom
ALCHALABI-DOBSON/APR14/829-791 / MNDA_ / Motor Neurone Disease Association / United Kingdom
U01 AG052409 / AG / NIA NIH HHS / United States
R01 AG030653 / AG / NIA NIH HHS / United States
R01 MH107649 / MH / NIMH NIH HHS / United States
R01 MH092293 / MH / NIMH NIH HHS / United States
P30 AG010129 / AG / NIA NIH HHS / United States
U01 MH094432 / MH / NIMH NIH HHS / United States
MR/L023784/2 / MRC_ / Medical Research Council / United Kingdom
MR/K026992/1 / MRC_ / Medical Research Council / United Kingdom
U01 AG049505 / AG / NIA NIH HHS / United States