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Hum Mol Genet. 2014 Feb 1;23(3):831-41. doi: 10.1093/hmg/ddt465. Epub 2013 Sep 20.

Genetic comorbidities in Parkinson's disease.

Collaborators (209)

Nalls M, Plagnol V, Hernandez DG, Sharma M, Sheerin UM, Saad M, Simón-Sánchez J, Schulte C, Lesage S, Sveinbjörnsdóttir S, Arepalli S, Barker R, Ben-Shlomo Y, Berendse HW, Berg D, Bhatia K, de Bie RM, Biffi A, Bloem B, Bochdanovits Z, Bonin M, Bras JM, Brockmann K, Brooks J, Burn DJ, Charlesworth G, Chen H, Chinnery PF, Chong S, Clarke CE, Cookson MR, Cooper JM, Corvol JC, Counsell C, Damier P, Dartigues JF, Deloukas P, Deuschl G, Dexter DT, van Dijk KD, Dillman A, Durif F, Dürr A, Edkins S, Evans JR, Foltynie T, Gao J, Gardner M, Gibbs JR, Goate A, Gray E, Guerreiro R, Gústafsson Ó, Harris C, van Hilten JJ, Hofman A, Hollenbeck A, Holton J, Hu M, Huang X, Huber H, Hudson G, Hunt SE, Huttenlocher J, Illig T, Jónsson PV, Lambert JC, Langford C, Lees A, Lichtner P, Limousin P, Lopez G, Lorenz D, McNeill A, Moorby C, Moore M, Morris HR, Morrison KE, Mudanohwo E, O'Sullivan SS, Pearson J, Perlmutter JS, Pétursson H, Pollak P, Post B, Potter S, Ravina B, Revesz T, Riess O, Rivadeneira F, Rizzu P, Ryten M, Sawcer S, Schapira A, Scheffer H, Shaw K, Shoulson I, Sidransky E, Smith C, Spencer CC, Stefánsson H, Steinberg S, Stockton JD, Strange A, Talbot K, Tanner CM, Tashakkori-Ghanbaria A, Tison F, Trabzuni D, Traynor BJ, Uitterlinden AG, Velseboer D, Vidailhet M, Walker R, van de Warrenburg B, Wickremaratchi M, Williams N, Williams-Gray CH, Winder-Rhodes S, Stefánsson K, Martinez M, Hardy J, Heutink P, Brice A, Gasser T, Singleton AB, Wood NW, Donnelly P, Barroso I, Blackwell JM, Bramon E, Brown MA, Casas JP, Corvin A, Deloukas P, Duncanson A, Jankowski J, Markus HS, Mathew CG, Palmer NA, Plomin R, Rautanen A, Sawcer SJ, Trembath RC, Viswanathan AC, Wood NW, Spencer CC, Band G, Bellenguez C, Freeman C, Hellenthal G, Giannoulatou E, Pirinen M, Pearson R, Strange A, Su Z, Vukcevic D, Donnelly P, Langford C, Hunt SE, Edkins S, Gwilliam R, Blackburn H, Bumpstead SJ, Dronov S, Gillman M, Gray E, Hammond N, Jayakumar A, McCann OT, Liddle J, Potter SC, Ravindrarajah R, Ricketts M, Waller M, Weston P, Widaa S, Whittaker P, Barroso I, Deloukas P, Mathew CG, Blackwell JM, Brown MA, Corvin A, McCarthy MI, Spencer CC, Singleton AB, Cookson MR, Gibbs J, Hernandez DG, Dillman A, Nalls MA, Zonderman AB, Arepalli S, Ferrucci L, Johnson R, Longo DL, O'Brien R, Traynor B, Troncoso J, van der Brug M, Zielke RH, Hardy J, Weale ME, Ryten M, Ramasamy A, Trabzuni D, Smith C, Walker R.

Author information

1
Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA.

Abstract

Parkinson's disease (PD) has a number of known genetic risk factors. Clinical and epidemiological studies have suggested the existence of intermediate factors that may be associated with additional risk of PD. We construct genetic risk profiles for additional epidemiological and clinical factors using known genome-wide association studies (GWAS) loci related to these specific phenotypes to estimate genetic comorbidity in a systematic review. We identify genetic risk profiles based on GWAS variants associated with schizophrenia and Crohn's disease as significantly associated with risk of PD. Conditional analyses adjusting for SNPs near loci associated with PD and schizophrenia or PD and Crohn's disease suggest that spatially overlapping loci associated with schizophrenia and PD account for most of the shared comorbidity, while variation outside of known proximal loci shared by PD and Crohn's disease accounts for their shared genetic comorbidity. We examine brain methylation and expression signatures proximal to schizophrenia and Crohn's disease loci to infer functional changes in the brain associated with the variants contributing to genetic comorbidity. We compare our results with a systematic review of epidemiological literature, while the findings are dissimilar to a degree; marginal genetic associations corroborate the directionality of associations across genetic and epidemiological data. We show a strong genetically defined level of comorbidity between PD and Crohn's disease as well as between PD and schizophrenia, with likely functional consequences of associated variants occurring in brain.

PMID:
24057672
PMCID:
PMC3888265
DOI:
10.1093/hmg/ddt465
[Indexed for MEDLINE]
Free PMC Article
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