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1. Investigation of autosomal genetic sex differences in Parkinson’s disease

Author

Blauwendraat, C. (Cornelis), Iwaki, H. (Hirotaka), Makarious, M. B. (Mary B.), Bandres-Ciga, S. (Sara), Leonard, H. L. (Hampton L.), Grenn, F. P. (Francis P.), Lake, J. (Julie), Krohn, L. (Lynne), Tan, M. (Manuela), Kim, J. J. (Jonggeol J.), Gibbs, J. R. (Jesse R.), Hernandez, D. G. (Dena G.), Ruskey, J. A. (Jennifer A.), Pihlstrom, L. (Lasse), Toft, M. (Mathias), van Hilten, J. J. (Jacobus J.), Marinus, J. (Johan), Schulte, C. (Claudia), Brockmann, K. (Kathrin), Sharma, M. (Manu), Siitonen, A. (Ari), Majamaa, K. (Kari), Eerola-Rautio, J. (Johanna), Tienari, P. J. (Pentti J.), Grosset, D. G. (Donald G.), Lesage, S. (Suzanne), Corvol, J.-C. (Jean-Christophe), Brice, A. (Alexis), Wood, N. (Nick), Hardy, J. (John), Gan-Or, Z. (Ziv), Heutink, P. (Peter), Gasser, T. (Thomas), Morris, H. R. (Huw R.), Noyce, A. J. (Alastair J.), Nalls, M. A. (Mike A.), and Singleton, A. B. (Andrew B.)

Abstract

Objective: Parkinson’s disease (PD) is a complex neurodegenerative disorder. Men are on average similar to 1.5 times more likely to develop PD compared to women with European ancestry. Over the years, genomewide association studies (GWAS) have identified numerous genetic risk factors for PD, however, it is unclear whether genetics contribute to disease etiology in a sex-specific manner. Methods: In an effort to study sex-specific genetic factors associated with PD, we explored 2 large genetic datasets from the International Parkinson’s Disease Genomics Consortium and the UK Biobank consisting of 13,020 male PD cases, 7,936 paternal proxy cases, 89,660 male controls, 7,947 female PD cases, 5,473 maternal proxy cases, and 90,662 female controls. We performed GWAS meta-analyses to identify distinct patterns of genetic risk contributing to disease in male versus female PD cases. Results: In total, 19 genomewide significant regions were identified and no sex-specific effects were observed. A high genetic correlation between the male and female PD GWAS were identified (rg = 0.877) and heritability estimates were identical between male and female PD cases (similar to 20%). Interpretation: We did not detect any significant genetic differences between male or female PD cases. Our study does not support the notion that common genetic variation on the autosomes could explain the difference in prevalence of PD between males and females cases at least when considering the current sample size under study. Further studies are warranted to investigate the genetic architecture of PD explained by X and Y chromosomes and further evaluate environmental effects that could potentially contribute to PD etiology in male versus female patients.

Published
2021

2. Moving beyond neurons:the role of cell type-specific gene regulation in Parkinson’s disease heritability

Author

Reynolds, R. H. (Regina H.), Botia, J. (Juan), Nalls, M. A. (Mike A.), Hardy, J. (John), Taliun, S. A. (Sarah A. Gagliano), Ryten, M. (Mina), Noyce, A. J. (Alastair J.), Nicolas, A. (Aude), Cookson, M. R. (Mark R.), Bandres-Ciga, S. (Sara), Gibbs, J. R. (J. Raphael), Hernandez, D. G. (Dena G.), Singleton, A. B. (Andrew B.), Reed, X. (Xylena), Leonard, H. (Hampton), Blauwendraat, C. (Cornelis), Faghri, F. (Faraz), Bras, J. (Jose), Guerreiro, R. (Rita), Tucci, A. (Arianna), Kia, D. A. (Demis A.), Houlden, H. (Henry), Plun-Favreau, H. (Helene), Mok, K. Y. (Kin Y.), Wood, N. W. (Nicholas W.), Lovering, R. (Ruth), R'Bibo, L. (Lea), Rizig, M. (Mie), Chelban, V. (Viorica), Trabzuni, D. (Daniah), Tan, M. (Manuela), Morris, H. R. (Huw R.), Middlehurst, B. (Ben), Quinn, J. (John), Billingsley, K. (Kimberley), Holmans, P. (Peter), Kinghorn, K. J. (Kerri J.), Lewis, P. (Patrick), Escott-Price, V. (Valentina), Williams, N. (Nigel), Foltynie, T. (Thomas), Brice, A. (Alexis), Danjou, F. (Fabrice), Lesage, S. (Suzanne), Corvol, J.-C. (Jean-Christophe), Martinez, M. (Maria), Giri, A. (Anamika), Schulte, C. (Claudia), Brockmann, K. (Kathrin), Simon-Sanchez, J. (Javier), Heutink, P. (Peter), Gasser, T. (Thomas), Rizzu, P. (Patrizia), Sharma, M. (Manu), Shulman, J. M. (Joshua M.), Robak, L. (Laurie), Lubbe, S. (Steven), Mencacci, N. E. (Niccolo E.), Finkbeiner, S. (Steven), Lungu, C. (Codrin), Scholz, S. W. (Sonja W.), Gan-Or, Z. (Ziv), Rouleau, G. A. (Guy A.), Krohan, L. (Lynne), van Hilten, J. J. (Jacobus J.), Marinus, J. (Johan), Adarmes-Gomez, A. D. (Astrid D.), Bernal-Bernal, I. (Inmaculada), Bonilla-Toribio, M. (Marta), Buiza-Rueda, D. (Dolores), Carrillo, F. (Fatima), Carrion-Claro, M. (Mario), Mir, P. (Pablo), Gomez-Garre, P. (Pilar), Jesus, S. (Silvia), Labrador-Espinosa, M. A. (Miguel A.), Macias, D. (Daniel), Vargas-Gonzalez, L. (Laura), Mendez-del-Barrio, C. (Carlota), Perinan-Tocino, T. (Teresa), Tejera-Parrado, C. (Cristina), Diez-Fairen, M. (Monica), Aguilar, M. (Miquel), Alvarez, I. (Ignacio), Teresa Boungiorno, M. (Mara), Carcel, M. (Maria), Pastor, P. (Pau), Pablo Tartari, J. (Juan), Alvarez, V. (Victoria), Menendez Gonzalez, M. (Manuel), Blazquez, M. (Marta), Garcia, C. (Ciara), Suarez-Sanmartin, E. (Esther), Javier Barrero, F. (Francisco), Mondragon Rezola, E. (Elisabet), Bergareche Yarza, J. A. (Jesus Alberto), Gorostidi Pagola, A. (Ana), de Munain Arregui, A. L. (Adolfo Lopez), Ruiz-Martinez, J. (Javier), Cerdan, D. (Debora), Duarte, J. (Jacinto), Clarimon, J. (Jordi), Dols-Icardo, O. (Oriol), Infante, J. (Jon), Marin, J. (Juan), Kulisevsky, J. (Jaime), Pagonabarraga, J. (Javier), Gonzalez-Aramburu, I. (Isabel), Sanchez Rodriguez, A. (Antonio), Sierra, M. (Mara), Duran, R. (Raquel), Ruz, C. (Clara), Vives, F. (Francisco), Escamilla-Sevilla, F. (Francisco), Minguez, A. (Adolfo), Camara, A. (Ana), Compta, Y. (Yaroslau), Ezquerra, M. (Mario), Jose Marti, M. (Maria), Fernandez, M. (Manel), Munoz, E. (Esteban), Fernandez-Santiago, R. (Ruben), Tolosa, E. (Eduard), Valldeoriola, F. (Francesc), Garcia-Ruiz, P. (Pedro), Gomez Heredia, M. J. (Maria Jose), Perez Errazquin, F. (Francisco), Hoenicka, J. (Janet), Jimenez-Escrig, A. (Adriano), Carlos Martinez-Castrillo, J. (Juan), Luis Lopez-Sendon, J. (Jose), Martinez Torres, I. (Irene), Tabernero, C. (Cesar), Vela, L. (Lydia), Zimprich, A. (Alexander), Pihlstrom, L. (Lasse), Koks, S. (Sulev), Taba, P. (Pille), Majamaa, K. (Kari), Siitonen, A. (Ari), Okubadejo, N. U. (Njideka U.), Ojo, O. O. (Oluwadamilola O.), Pitcher, T. (Toni), Anderson, T. (Tim), Bentley, S. (Steven), Fowdar, J. (Javed), Mellick, G. (George), Dalrymple-Alford, J. (John), Henders, A. K. (Anjali K.), Kassam, I. (Irfahan), Montgomery, G. (Grant), Sidorenko, J. (Julia), Zhang, F. (Futao), Xue, A. (Angli), Vallerga, C. L. (Costanza L.), Wallace, L. (Leanne), Wray, N. R. (Naomi R.), Yang, J. (Jian), Visscher, P. M. (Peter M.), Gratten, J. (Jacob), Silburn, P. A. (Peter A.), Halliday, G. (Glenda), Hickie, I. (Ian), Kwok, J. (John), Lewis, S. (Simon), Kennedy, M. (Martin), Pearson, J. (John), Reynolds, R. H. (Regina H.), Botia, J. (Juan), Nalls, M. A. (Mike A.), Hardy, J. (John), Taliun, S. A. (Sarah A. Gagliano), Ryten, M. (Mina), Noyce, A. J. (Alastair J.), Nicolas, A. (Aude), Cookson, M. R. (Mark R.), Bandres-Ciga, S. (Sara), Gibbs, J. R. (J. Raphael), Hernandez, D. G. (Dena G.), Singleton, A. B. (Andrew B.), Reed, X. (Xylena), Leonard, H. (Hampton), Blauwendraat, C. (Cornelis), Faghri, F. (Faraz), Bras, J. (Jose), Guerreiro, R. (Rita), Tucci, A. (Arianna), Kia, D. A. (Demis A.), Houlden, H. (Henry), Plun-Favreau, H. (Helene), Mok, K. Y. (Kin Y.), Wood, N. W. (Nicholas W.), Lovering, R. (Ruth), R'Bibo, L. (Lea), Rizig, M. (Mie), Chelban, V. (Viorica), Trabzuni, D. (Daniah), Tan, M. (Manuela), Morris, H. R. (Huw R.), Middlehurst, B. (Ben), Quinn, J. (John), Billingsley, K. (Kimberley), Holmans, P. (Peter), Kinghorn, K. J. (Kerri J.), Lewis, P. (Patrick), Escott-Price, V. (Valentina), Williams, N. (Nigel), Foltynie, T. (Thomas), Brice, A. (Alexis), Danjou, F. (Fabrice), Lesage, S. (Suzanne), Corvol, J.-C. (Jean-Christophe), Martinez, M. (Maria), Giri, A. (Anamika), Schulte, C. (Claudia), Brockmann, K. (Kathrin), Simon-Sanchez, J. (Javier), Heutink, P. (Peter), Gasser, T. (Thomas), Rizzu, P. (Patrizia), Sharma, M. (Manu), Shulman, J. M. (Joshua M.), Robak, L. (Laurie), Lubbe, S. (Steven), Mencacci, N. E. (Niccolo E.), Finkbeiner, S. (Steven), Lungu, C. (Codrin), Scholz, S. W. (Sonja W.), Gan-Or, Z. (Ziv), Rouleau, G. A. (Guy A.), Krohan, L. (Lynne), van Hilten, J. J. (Jacobus J.), Marinus, J. (Johan), Adarmes-Gomez, A. D. (Astrid D.), Bernal-Bernal, I. (Inmaculada), Bonilla-Toribio, M. (Marta), Buiza-Rueda, D. (Dolores), Carrillo, F. (Fatima), Carrion-Claro, M. (Mario), Mir, P. (Pablo), Gomez-Garre, P. (Pilar), Jesus, S. (Silvia), Labrador-Espinosa, M. A. (Miguel A.), Macias, D. (Daniel), Vargas-Gonzalez, L. (Laura), Mendez-del-Barrio, C. (Carlota), Perinan-Tocino, T. (Teresa), Tejera-Parrado, C. (Cristina), Diez-Fairen, M. (Monica), Aguilar, M. (Miquel), Alvarez, I. (Ignacio), Teresa Boungiorno, M. (Mara), Carcel, M. (Maria), Pastor, P. (Pau), Pablo Tartari, J. (Juan), Alvarez, V. (Victoria), Menendez Gonzalez, M. (Manuel), Blazquez, M. (Marta), Garcia, C. (Ciara), Suarez-Sanmartin, E. (Esther), Javier Barrero, F. (Francisco), Mondragon Rezola, E. (Elisabet), Bergareche Yarza, J. A. (Jesus Alberto), Gorostidi Pagola, A. (Ana), de Munain Arregui, A. L. (Adolfo Lopez), Ruiz-Martinez, J. (Javier), Cerdan, D. (Debora), Duarte, J. (Jacinto), Clarimon, J. (Jordi), Dols-Icardo, O. (Oriol), Infante, J. (Jon), Marin, J. (Juan), Kulisevsky, J. (Jaime), Pagonabarraga, J. (Javier), Gonzalez-Aramburu, I. (Isabel), Sanchez Rodriguez, A. (Antonio), Sierra, M. (Mara), Duran, R. (Raquel), Ruz, C. (Clara), Vives, F. (Francisco), Escamilla-Sevilla, F. (Francisco), Minguez, A. (Adolfo), Camara, A. (Ana), Compta, Y. (Yaroslau), Ezquerra, M. (Mario), Jose Marti, M. (Maria), Fernandez, M. (Manel), Munoz, E. (Esteban), Fernandez-Santiago, R. (Ruben), Tolosa, E. (Eduard), Valldeoriola, F. (Francesc), Garcia-Ruiz, P. (Pedro), Gomez Heredia, M. J. (Maria Jose), Perez Errazquin, F. (Francisco), Hoenicka, J. (Janet), Jimenez-Escrig, A. (Adriano), Carlos Martinez-Castrillo, J. (Juan), Luis Lopez-Sendon, J. (Jose), Martinez Torres, I. (Irene), Tabernero, C. (Cesar), Vela, L. (Lydia), Zimprich, A. (Alexander), Pihlstrom, L. (Lasse), Koks, S. (Sulev), Taba, P. (Pille), Majamaa, K. (Kari), Siitonen, A. (Ari), Okubadejo, N. U. (Njideka U.), Ojo, O. O. (Oluwadamilola O.), Pitcher, T. (Toni), Anderson, T. (Tim), Bentley, S. (Steven), Fowdar, J. (Javed), Mellick, G. (George), Dalrymple-Alford, J. (John), Henders, A. K. (Anjali K.), Kassam, I. (Irfahan), Montgomery, G. (Grant), Sidorenko, J. (Julia), Zhang, F. (Futao), Xue, A. (Angli), Vallerga, C. L. (Costanza L.), Wallace, L. (Leanne), Wray, N. R. (Naomi R.), Yang, J. (Jian), Visscher, P. M. (Peter M.), Gratten, J. (Jacob), Silburn, P. A. (Peter A.), Halliday, G. (Glenda), Hickie, I. (Ian), Kwok, J. (John), Lewis, S. (Simon), Kennedy, M. (Martin), and Pearson, J. (John)

Abstract

Parkinson’s disease (PD), with its characteristic loss of nigrostriatal dopaminergic neurons and deposition of α-synuclein in neurons, is often considered a neuronal disorder. However, in recent years substantial evidence has emerged to implicate glial cell types, such as astrocytes and microglia. In this study, we used stratified LD score regression and expression-weighted cell-type enrichment together with several brain-related and cell-type-specific genomic annotations to connect human genomic PD findings to specific brain cell types. We found that PD heritability attributable to common variation does not enrich in global and regional brain annotations or brain-related cell-type-specific annotations. Likewise, we found no enrichment of PD susceptibility genes in brain-related cell types. In contrast, we demonstrated a significant enrichment of PD heritability in a curated lysosomal gene set highly expressed in astrocytic, microglial, and oligodendrocyte subtypes, and in LoF-intolerant genes, which were found highly expressed in almost all tested cellular subtypes. Our results suggest that PD risk loci do not lie in specific cell types or individual brain regions, but rather in global cellular processes detectable across several cell types.

Published
2019

3. Discovery and functional prioritization of Parkinson's disease candidate genes from large-scale whole exome sequencing

Author

Jansen, I. (Iris), Ye, H. (Hui), Heetveld, S. (Sasja), Lechler, M.C. (Marie C.), Michels, H. (Helen), Seinstra, R.I. (Renée I.), Lubbe, S.J. (Steven J.), Drouet, V. (Valérie), Lesage, S. (Suzanne), Majounie, E. (Elisa), Gibbs, J.R. (J.Raphael), Nalls, M.A. (Michael), Ryten, M. (Mina), Botia, J.A. (Juan A.), Vandrovcova, J. (Jana), Simón-Sánchez, J. (Javier), Castillo-Lizardo, M. (Melissa), Rizzu, P. (Patrizia), Blauwendraat, C. (Cornelis), Chouhan, A.K. (Amit K.), Li, Y. (Yarong), Yogi, P. (Puja), Amin, N. (Najaf), Duijn, C.M. (Cornelia) van, Morris, H.R. (Huw R.), Brice, A. (Alexis), Singleton, A. (Andrew), David, D.C. (Della C.), Nollen, E.A. (Ellen A.), Jain, A. (Ashok), Shulman, J.M., Heutink, P. (Peter), Hernandez, D.G. (Dena), Arepalli, S. (Sampath), Brooks, J. (Janet), Price, R. (Ryan), Nicolas, A. (Aude), Chong, S. (Sean), Cookson, M.R. (Mark), Dillman, A. (Allissa), Moore, M. (Matt), Traynor, B.J. (Bryan), Plagnol, V. (Vincent), Nicholas W Wood, Sheerin, U.-M. (Una-Marie), Jose M Bras, Charlesworth, K. (Kate), Gardner, M. (Mac), Guerreiro, R. (Rita), Trabzuni, D. (Danyah), Hardy, J. (John), Sharma, M., Saad, M. (Mohamad), Javier Simón-Sánchez, Schulte, C. (Claudia), Corvol, J.C. (Jean-Christophe), Dürr, A. (Alexandra), Vidailhet, M. (M.), Sveinbjörnsdóttir, S. (Sigurlaug), Barker, R.A. (Roger), Caroline H Williams-Gray, Ben-Shlomo, Y., Berendse, H.W. (Henk W.), Dijk, K.D. (Karin) van, Berg, D. (Daniela), Brockmann, K., Wurster, K.D. (Kathrin), Mätzler, W. (Walter), Gasser, T. (Thomas), Martinez, M. (Maria), Bie, R.M.A. (Rob) de, Biffi, A. (Alessandro), Velseboer, D. (Daan), Bloem, B.R. (Bastiaan), Post, B. (Bart), Wickremaratchi, M. (Mirdhu), Warrenburg, B. (Bart) van de, Bochdanovits, Z. (Zoltan), Bonin, M. (Malte) von, Pétursson, H. (Hjörvar), Riess, O. (Olaf), Burn, D.J. (David), Lubbe, S. (Steven), Cooper, J.M. (J Mark), McNeill, N.H. (Nathan), Schapira, A. (Anthony), Lungu, C. (Codrin), Chen, H. (Honglei), Dong, J. (Jing), Chinnery, P.F. (Patrick F.), Hudson, G. (Gavin), Clarke, C.E. (Carl E.), Moorby, C. (Catriona), Counsell, C. (Carl), Damier, P. (Philippe), Dartigues, J.-F., Deloukas, P. (Panagiotis), Gray, E. (Emma), Edkins, T. (Ted), Hunt, S.E. (Sarah E.), Potter, S.C. (Simon), Tashakkori-Ghanbaria, A. (Avazeh), Deuschl, G. (Günther), Lorenz, D. (Delia), Dexter, D.T. (David), Durif, F. (Frank), Evans, J. (Jonathan Mark), Langford, C. (Cordelia), Foltynie, T. (Thomas), Goate, A.M. (Alison), Harris, C. (Clare), Hilten, J.J. (Jacobus) van, Hofman, A. (Albert), Hollenbeck, J.R. (John R.), Holton, J.L. (Janice), Hu, M. (Michele), Huang, X. (Xiaohong), Illig, T. (Thomas), Jónsson, P.V. (Pálmi), Lambert, J.-C., O'Sullivan, S.S. (Sean), Revesz, T. (Tamas), Shaw, K. (Karen), Lees, A.J. (Andrew), Lichtner, P. (Peter), Limousin, P. (Patricia), Lopez, G., Escott-Price, V. (Valentina), Pearson, J. (Justin), Williams, N. (Nigel), Mudanohwo, E. (Ese), Perlmutter, J.S. (Joel), Pollak, P. (Pierre), Rivadeneira Ramirez, F. (Fernando), Uitterlinden, A.G. (André), Sawcer, S.J. (Stephen), Scheffer, H. (Hans), Shoulson, I. (Ira), Shulman, L. (Lee), Smith, C. (Colin), Walker, R. (Robert), Spencer, C.C.A. (Chris C.), Strange, A. (Amy), Stefansson, H. (Hreinn), Bettella, F. (Francesco), Zwart, J-A. (John-Anker), Stockton, J.D. (Joanna D.), Talbot, D., Tanner, C.M. (Carlie), Tison, F. (François), Winder-Rhodes, S. (Sophie), Bhatia, K.P. (Kailash), Jansen, I. (Iris), Ye, H. (Hui), Heetveld, S. (Sasja), Lechler, M.C. (Marie C.), Michels, H. (Helen), Seinstra, R.I. (Renée I.), Lubbe, S.J. (Steven J.), Drouet, V. (Valérie), Lesage, S. (Suzanne), Majounie, E. (Elisa), Gibbs, J.R. (J.Raphael), Nalls, M.A. (Michael), Ryten, M. (Mina), Botia, J.A. (Juan A.), Vandrovcova, J. (Jana), Simón-Sánchez, J. (Javier), Castillo-Lizardo, M. (Melissa), Rizzu, P. (Patrizia), Blauwendraat, C. (Cornelis), Chouhan, A.K. (Amit K.), Li, Y. (Yarong), Yogi, P. (Puja), Amin, N. (Najaf), Duijn, C.M. (Cornelia) van, Morris, H.R. (Huw R.), Brice, A. (Alexis), Singleton, A. (Andrew), David, D.C. (Della C.), Nollen, E.A. (Ellen A.), Jain, A. (Ashok), Shulman, J.M., Heutink, P. (Peter), Hernandez, D.G. (Dena), Arepalli, S. (Sampath), Brooks, J. (Janet), Price, R. (Ryan), Nicolas, A. (Aude), Chong, S. (Sean), Cookson, M.R. (Mark), Dillman, A. (Allissa), Moore, M. (Matt), Traynor, B.J. (Bryan), Plagnol, V. (Vincent), Nicholas W Wood, Sheerin, U.-M. (Una-Marie), Jose M Bras, Charlesworth, K. (Kate), Gardner, M. (Mac), Guerreiro, R. (Rita), Trabzuni, D. (Danyah), Hardy, J. (John), Sharma, M., Saad, M. (Mohamad), Javier Simón-Sánchez, Schulte, C. (Claudia), Corvol, J.C. (Jean-Christophe), Dürr, A. (Alexandra), Vidailhet, M. (M.), Sveinbjörnsdóttir, S. (Sigurlaug), Barker, R.A. (Roger), Caroline H Williams-Gray, Ben-Shlomo, Y., Berendse, H.W. (Henk W.), Dijk, K.D. (Karin) van, Berg, D. (Daniela), Brockmann, K., Wurster, K.D. (Kathrin), Mätzler, W. (Walter), Gasser, T. (Thomas), Martinez, M. (Maria), Bie, R.M.A. (Rob) de, Biffi, A. (Alessandro), Velseboer, D. (Daan), Bloem, B.R. (Bastiaan), Post, B. (Bart), Wickremaratchi, M. (Mirdhu), Warrenburg, B. (Bart) van de, Bochdanovits, Z. (Zoltan), Bonin, M. (Malte) von, Pétursson, H. (Hjörvar), Riess, O. (Olaf), Burn, D.J. (David), Lubbe, S. (Steven), Cooper, J.M. (J Mark), McNeill, N.H. (Nathan), Schapira, A. (Anthony), Lungu, C. (Codrin), Chen, H. (Honglei), Dong, J. (Jing), Chinnery, P.F. (Patrick F.), Hudson, G. (Gavin), Clarke, C.E. (Carl E.), Moorby, C. (Catriona), Counsell, C. (Carl), Damier, P. (Philippe), Dartigues, J.-F., Deloukas, P. (Panagiotis), Gray, E. (Emma), Edkins, T. (Ted), Hunt, S.E. (Sarah E.), Potter, S.C. (Simon), Tashakkori-Ghanbaria, A. (Avazeh), Deuschl, G. (Günther), Lorenz, D. (Delia), Dexter, D.T. (David), Durif, F. (Frank), Evans, J. (Jonathan Mark), Langford, C. (Cordelia), Foltynie, T. (Thomas), Goate, A.M. (Alison), Harris, C. (Clare), Hilten, J.J. (Jacobus) van, Hofman, A. (Albert), Hollenbeck, J.R. (John R.), Holton, J.L. (Janice), Hu, M. (Michele), Huang, X. (Xiaohong), Illig, T. (Thomas), Jónsson, P.V. (Pálmi), Lambert, J.-C., O'Sullivan, S.S. (Sean), Revesz, T. (Tamas), Shaw, K. (Karen), Lees, A.J. (Andrew), Lichtner, P. (Peter), Limousin, P. (Patricia), Lopez, G., Escott-Price, V. (Valentina), Pearson, J. (Justin), Williams, N. (Nigel), Mudanohwo, E. (Ese), Perlmutter, J.S. (Joel), Pollak, P. (Pierre), Rivadeneira Ramirez, F. (Fernando), Uitterlinden, A.G. (André), Sawcer, S.J. (Stephen), Scheffer, H. (Hans), Shoulson, I. (Ira), Shulman, L. (Lee), Smith, C. (Colin), Walker, R. (Robert), Spencer, C.C.A. (Chris C.), Strange, A. (Amy), Stefansson, H. (Hreinn), Bettella, F. (Francesco), Zwart, J-A. (John-Anker), Stockton, J.D. (Joanna D.), Talbot, D., Tanner, C.M. (Carlie), Tison, F. (François), Winder-Rhodes, S. (Sophie), and Bhatia, K.P. (Kailash)

Abstract

Background: Whole-exome sequencing (WES) has been successful in identifying genes that cause familial Parkinson's disease (PD). However, until now this approach has not been deployed to study large cohorts of unrelated participants. To discover rare PD susceptibility variants, we performed WES in 1148 unrelated cases and 503 control participants. Candidate genes were subsequently validated for functions relevant to PD based on parallel RNA-interference (RNAi) screens in human cell culture and Drosophila and C. elegans models. Results: Assuming autosomal recessive inheritance, we identify 27 genes that have homozygous or compound heterozygous loss-of-function variants in PD cases. Definitive replication and confirmation of these findings were hindered by potential heterogeneity and by the rarity of the implicated alleles. We therefore looked for potential genetic interactions with established PD mechanisms. Following RNAi-mediated knockdown, 15 of the genes modulated mitochondrial dynamics in human neuronal cultures and four candidates enhanced α-synuclein-induced neurodegeneration in Drosophila. Based on complementary analyses in independent human datasets, five functionally validated genes-GPATCH2L, UHRF1BP1L, PTPRH, ARSB, and VPS13C-also showed evidence consistent with genetic replication. Conclusions: By integrating human genetic and functional evidence, we identify several PD susceptibility gene candidates for further investigation. Our approach highlights a powerful experimental strategy with broad applicability for future studies of disorders with complex genetic etiologies.

Published
2017
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4. Large-scale meta-analysis of genome-wide association data identifies six new risk loci for Parkinson's disease

Author

Nalls, M.A. (Michael), Pankratz, V.S. (Shane), Lill, C.M. (Christina), Do, C.B. (Chuong), Hernandez, D.G. (Dena), Saad, M. (Mohamad), DeStefano, A.L. (Anita), Kara, E. (Eleanna), Bras, J. (Jose), Sharma, M., Schulte, C. (Claudia), Keller, M.F. (Margaux), Arepalli, S. (Sampath), Letson, C. (Christopher), Edsall, C. (Connor), Kallela, M. (Mikko), Liu, X. (Xinmin), Pliner, H. (Hannah), Lee, J.H. (Joseph H.), Cheng, R. (Rong), Ikram, M.A. (Arfan), Ioannidis, J.P.A. (John), Hadjigeorgiou, G.M. (Georgios M.), Bis, J.C. (Joshua), Martinez, M. (Maria), Perlmutter, J.S. (Joel), Goate, A.M. (Alison M.), Marder, K.S. (Karen S.), Fiske, B. (Brian), Sutherland, M. (Margaret), Xiromerisiou, G. (Georgia), Myers, R.H. (Richard), Clark, L.N. (Lorraine N.), Zwart, J-A. (John-Anker), Hardy, J. (John), Heutink, P. (Peter), Chen, H. (Honglei), Wood, N.W. (Nicholas), Houlden, H. (Henry), Payami, H. (Haydeh), Brice, A., Scott, W.K. (William), Gasser, T. (Thomas), Bertram, L. (Lars), Eriksson, N. (Nicholas), Foroud, T. (Tatiana), Singleton, A. (Andrew), Nalls, M.A. (Michael), Pankratz, V.S. (Shane), Lill, C.M. (Christina), Do, C.B. (Chuong), Hernandez, D.G. (Dena), Saad, M. (Mohamad), DeStefano, A.L. (Anita), Kara, E. (Eleanna), Bras, J. (Jose), Sharma, M., Schulte, C. (Claudia), Keller, M.F. (Margaux), Arepalli, S. (Sampath), Letson, C. (Christopher), Edsall, C. (Connor), Kallela, M. (Mikko), Liu, X. (Xinmin), Pliner, H. (Hannah), Lee, J.H. (Joseph H.), Cheng, R. (Rong), Ikram, M.A. (Arfan), Ioannidis, J.P.A. (John), Hadjigeorgiou, G.M. (Georgios M.), Bis, J.C. (Joshua), Martinez, M. (Maria), Perlmutter, J.S. (Joel), Goate, A.M. (Alison M.), Marder, K.S. (Karen S.), Fiske, B. (Brian), Sutherland, M. (Margaret), Xiromerisiou, G. (Georgia), Myers, R.H. (Richard), Clark, L.N. (Lorraine N.), Zwart, J-A. (John-Anker), Hardy, J. (John), Heutink, P. (Peter), Chen, H. (Honglei), Wood, N.W. (Nicholas), Houlden, H. (Henry), Payami, H. (Haydeh), Brice, A., Scott, W.K. (William), Gasser, T. (Thomas), Bertram, L. (Lars), Eriksson, N. (Nicholas), Foroud, T. (Tatiana), and Singleton, A. (Andrew)

Abstract

We conducted a meta-analysis of Parkinson's disease genome-wide association studies using a common set of 7,893,274 variants across 13,708 cases and 95,282 controls. Twenty-six loci were identified as having genome-wide significant association; these and 6 additional previously reported loci were then tested in an independent set of 5,353 cases and 5,551 controls. Of the 32 tested SNPs, 24 replicated, including 6 newly identified loci. Conditional analyses within loci showed that four loci, including GBA, GAK-DGKQ, SNCA and the HLA region, contain a secondary independent risk variant. In tot

Published
2014
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5. The Val158Met COMT polymorphism is a modifier of the age at onset in Parkinson's disease with a sexual dimorphism

Author

Klebe, S. (Stephan), Golmard, L. (Lisa), Nalls, M.A. (Michael), Saad, F. (Fred), Singleton, A. (Andrew), Bras, J. (Jose), Hardy, J. (John), Simón-Sánchez, J. (Javier), Heutink, P. (Peter), Kuhlenbäumer, G. (Gregor), Charfi, R. (Rim), Klein, C. (Christoph), Hagenah, J., Gasser, T. (Thomas), Wurster, K.D. (Kathrin), Lesage, S. (Suzanne), Lorenz, D. (Delia), Deuschl, G. (Günther), Durif, F. (Franck), Pollak, M.N. (Michael), Damier, P. (Philippe), Tison, F. (François), Durr, A., Amouyel, P. (Philippe), Lambert, J.C. (Jean Charles), Tzourio, C. (Christophe), Maubaret, C. (Cécilia), Charbonnier-Beaupel, F. (Fanny), Tahiri, K. (Khadija), Vidailhet, M. (M.), Martinez, M. (Maria), Brice, A., Corvol, J.C. (Jean-Christophe), Agid, Y. (Yves), Anheim, M. (M.), Bonnet, A.-M. (A.), Borg, M. (Michael), Broussolle, E. (E.), Corvol, J.C. (Jean Christophe), Damier, Ph. (Ph), Destée, A. (A.), Durif, F. (F.), Klebe, S. (S.), Lohmann, E. (E.), Penet, C. (C.), Krack, P. (P.), Rascol, O. (O.), Tison, F. (F.), Tranchant, C. (C.), Vérin, M. (M.), Viallet, F. (F.), Vidailhet, M. (Marie), Plagnol, V. (Vincent), Bras, J.M. (Jose), Hernandez, D.G. (Dena), Sharma, M., Sheerin, U.-M. (Una-Marie), Schulte, C. (Claudia), Sveinbjörnsdóttir, S. (Sigurlaug), Arepalli, S. (Sampath), Band, G. (Gavin), Vukcevic, D. (Damjan), Barker, R.A. (Roger), Bellinguez, C. (Céline), Ben-Shlomo, Y., Berendse, H.W. (Henk W.), Berg, D. (Daniela), Bhatia, K.P. (Kailash), Bie, R.M.A. (Rob) de, Biffi, A. (Alessandro), Bloem, B. (Bas), Bochdanovits, Z. (Zoltan), Bonin, M. (Malte) von, Brockmann, K., Brooks, J. (Janet), Burn, D.J. (David), Charlesworth, K. (Kate), Chen, H. (Honglei), Chinnery, P.F. (Patrick), Chong, S. (Sean), Clarke, C.E. (Carl), Cookson, M.R. (Mark), Cooper, J.M. (J. Mark), Counsell, C. (Carl), Dartigues, J.-F., Deloukas, P. (Panagiotis), Dexter, D.T. (David), Dijk, K.D. (Karin) van, Dillman, A. (Allissa), Durif, F. (Frank), Edkins, T. (Ted), Evans, J. (Jonathan Mark), Foltynie, T. (Thomas), Freeman, C. (Colin), Gao, J. (Jianjun), Gardner, M. (Mac), Gibbs, J. (Raphael), Goate, A.M. (Alison), Gray, E. (Emma), Guerreiro, R. (Rita), Gustafsson, O. (Omar), Harris, C. (Clare), Hellenthal, F.A., Hilten, J.J. (Jacobus) van, Hofman, A. (Albert), Hollenbeck, J.R. (John R.), Holton, J.L. (Janice), Hu, M. (Michele), Huang, X. (Xiaohong), Huber, H. (Heiko), Hudson, G. (Gavin), Hunt, S.E. (Sarah), Huttenlocher, J. (Johanna), Illig, T. (Thomas), Jónsson, P.V. (Pálmi), Langford, C. (Cordelia), Lees, A.J. (Andrew), Lichtner, P. (Peter), Limousin, P. (Patricia), Lopez, G., McNeill, N.H. (Nathan), Moorby, C. (Catriona), Moore, M. (Matt), Morris, H. (Huw), Morrison, K.E. (Karen), Mudanohwo, E. (Ese), O'Sullivan, S.S. (Sean), Pearson, J. (Justin), Pearson, R. (Ruth), Perlmutter, J.S. (Joel), Pétursson, H. (Hjörvar), Pirinen, M. (Matti), Post, B. (Bart), Ravina, B. (Bernard), Revesz, T. (Tamas), Riess, O. (Olaf), Rivadeneira Ramirez, F. (Fernando), Rizzu, P. (Patrizia), Ryten, M. (Mina), Sawcer, S.J. (Stephen), Schapira, A.H.V. (Anthony), Scheffer, H. (Hans), Shaw, K. (Karen), Shoulson, I. (Ira), Sidransky, E. (Ellen), Silva, R. (Rohan) de, Smith, C. (Colin), Spencer, C.C.A. (Chris C.), Stefansson, H. (Hreinn), Wolf, C. (Christiane), Stockton, J.D. (Joanna), Strange, A. (Amy), Su, Z. (Zhan), Talbot, D., Tanner, C.M. (Carlie), Tashakkori-Ghanbaria, A. (Avazeh), Trabzuni, D. (Danyah), Traynor, B.J. (Bryan), Uitterlinden, A.G. (André), Vandrovcova, J. (Jana), Velseboer, D. (Daan), Walker, R. (Robert), Warrenburg, B. (Bart) van de, Weale, M.E. (Michael), Wickremaratchi, M. (Mirdhu), Williams, N. (Nigel), Williams-Gray, C.H. (Caroline), Winder-Rhodes, S. (Sophie), Zwart, J-A. (John-Anker), Wood, N.W. (Nicholas), Klebe, S. (Stephan), Golmard, L. (Lisa), Nalls, M.A. (Michael), Saad, F. (Fred), Singleton, A. (Andrew), Bras, J. (Jose), Hardy, J. (John), Simón-Sánchez, J. (Javier), Heutink, P. (Peter), Kuhlenbäumer, G. (Gregor), Charfi, R. (Rim), Klein, C. (Christoph), Hagenah, J., Gasser, T. (Thomas), Wurster, K.D. (Kathrin), Lesage, S. (Suzanne), Lorenz, D. (Delia), Deuschl, G. (Günther), Durif, F. (Franck), Pollak, M.N. (Michael), Damier, P. (Philippe), Tison, F. (François), Durr, A., Amouyel, P. (Philippe), Lambert, J.C. (Jean Charles), Tzourio, C. (Christophe), Maubaret, C. (Cécilia), Charbonnier-Beaupel, F. (Fanny), Tahiri, K. (Khadija), Vidailhet, M. (M.), Martinez, M. (Maria), Brice, A., Corvol, J.C. (Jean-Christophe), Agid, Y. (Yves), Anheim, M. (M.), Bonnet, A.-M. (A.), Borg, M. (Michael), Broussolle, E. (E.), Corvol, J.C. (Jean Christophe), Damier, Ph. (Ph), Destée, A. (A.), Durif, F. (F.), Klebe, S. (S.), Lohmann, E. (E.), Penet, C. (C.), Krack, P. (P.), Rascol, O. (O.), Tison, F. (F.), Tranchant, C. (C.), Vérin, M. (M.), Viallet, F. (F.), Vidailhet, M. (Marie), Plagnol, V. (Vincent), Bras, J.M. (Jose), Hernandez, D.G. (Dena), Sharma, M., Sheerin, U.-M. (Una-Marie), Schulte, C. (Claudia), Sveinbjörnsdóttir, S. (Sigurlaug), Arepalli, S. (Sampath), Band, G. (Gavin), Vukcevic, D. (Damjan), Barker, R.A. (Roger), Bellinguez, C. (Céline), Ben-Shlomo, Y., Berendse, H.W. (Henk W.), Berg, D. (Daniela), Bhatia, K.P. (Kailash), Bie, R.M.A. (Rob) de, Biffi, A. (Alessandro), Bloem, B. (Bas), Bochdanovits, Z. (Zoltan), Bonin, M. (Malte) von, Brockmann, K., Brooks, J. (Janet), Burn, D.J. (David), Charlesworth, K. (Kate), Chen, H. (Honglei), Chinnery, P.F. (Patrick), Chong, S. (Sean), Clarke, C.E. (Carl), Cookson, M.R. (Mark), Cooper, J.M. (J. Mark), Counsell, C. (Carl), Dartigues, J.-F., Deloukas, P. (Panagiotis), Dexter, D.T. (David), Dijk, K.D. (Karin) van, Dillman, A. (Allissa), Durif, F. (Frank), Edkins, T. (Ted), Evans, J. (Jonathan Mark), Foltynie, T. (Thomas), Freeman, C. (Colin), Gao, J. (Jianjun), Gardner, M. (Mac), Gibbs, J. (Raphael), Goate, A.M. (Alison), Gray, E. (Emma), Guerreiro, R. (Rita), Gustafsson, O. (Omar), Harris, C. (Clare), Hellenthal, F.A., Hilten, J.J. (Jacobus) van, Hofman, A. (Albert), Hollenbeck, J.R. (John R.), Holton, J.L. (Janice), Hu, M. (Michele), Huang, X. (Xiaohong), Huber, H. (Heiko), Hudson, G. (Gavin), Hunt, S.E. (Sarah), Huttenlocher, J. (Johanna), Illig, T. (Thomas), Jónsson, P.V. (Pálmi), Langford, C. (Cordelia), Lees, A.J. (Andrew), Lichtner, P. (Peter), Limousin, P. (Patricia), Lopez, G., McNeill, N.H. (Nathan), Moorby, C. (Catriona), Moore, M. (Matt), Morris, H. (Huw), Morrison, K.E. (Karen), Mudanohwo, E. (Ese), O'Sullivan, S.S. (Sean), Pearson, J. (Justin), Pearson, R. (Ruth), Perlmutter, J.S. (Joel), Pétursson, H. (Hjörvar), Pirinen, M. (Matti), Post, B. (Bart), Ravina, B. (Bernard), Revesz, T. (Tamas), Riess, O. (Olaf), Rivadeneira Ramirez, F. (Fernando), Rizzu, P. (Patrizia), Ryten, M. (Mina), Sawcer, S.J. (Stephen), Schapira, A.H.V. (Anthony), Scheffer, H. (Hans), Shaw, K. (Karen), Shoulson, I. (Ira), Sidransky, E. (Ellen), Silva, R. (Rohan) de, Smith, C. (Colin), Spencer, C.C.A. (Chris C.), Stefansson, H. (Hreinn), Wolf, C. (Christiane), Stockton, J.D. (Joanna), Strange, A. (Amy), Su, Z. (Zhan), Talbot, D., Tanner, C.M. (Carlie), Tashakkori-Ghanbaria, A. (Avazeh), Trabzuni, D. (Danyah), Traynor, B.J. (Bryan), Uitterlinden, A.G. (André), Vandrovcova, J. (Jana), Velseboer, D. (Daan), Walker, R. (Robert), Warrenburg, B. (Bart) van de, Weale, M.E. (Michael), Wickremaratchi, M. (Mirdhu), Williams, N. (Nigel), Williams-Gray, C.H. (Caroline), Winder-Rhodes, S. (Sophie), Zwart, J-A. (John-Anker), and Wood, N.W. (Nicholas)

Abstract

The catechol-O-methyltranferase (COMT) is one of the main enzymes that metabolise dopamine in the brain. The Val158Met polymorphism in the COMT gene (rs4680) causes a trimodal distribution of high (Val/Val), intermediate (Val/Met) and low (Met/Met) enzyme activity. We tested whether the Val158Met polymorphism is a modifier of the age at onset (AAO) in Parkinson’s disease (PD). The rs4680 was genotyped in a total of 16 609 subjects from five independent cohorts of European and North American origin (5886 patients with PD and 10 723 healthy controls). The multivariate analysis for comparing PD and control groups was based on a stepwise logistic regression, with gender, age and cohort origin included in the initial model. The multivariate analysis of the AAO was a mixed linear model, with COMT genotype and gender considered as fixed effects and cohort and cohort-gender interaction as random effects. COMT genotype was coded as a quantitative variable, assuming a codominant genetic effect. The distribution of the COMT polymorphism was not significantly different in patients and controls (p=0.22). The Val allele had a significant effect on the AAO with a younger AAO in patients with the Val/Val (57.1±13.9, p=0.03) than the Val/Met (57.4±13.9) and the Met/Met genotypes (58.3±13.5). The difference was greater in men (1.9 years between Val/Val and Met/Met, p=0.007) than in women (0.2 years, p=0.81). Thus, the Val158Met COMT polym

Published
2013
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