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1. Author Correction: A systems biology approach uncovers cell-specific gene regulatory effects of genetic associations in multiple sclerosis (Nature Communications, (2019), 10, 1, (2236), 10.1038/s41467-019-09773-y)

Author

Madireddy, L. (Lohith), Patsopoulos, N.A. (Nikolaos A.), Cotsapas, C. (Chris), Bos, S.D. (Steffan), Beecham, A.H. (Ashley), McCauley, J. (John William), Kim, K. (Kicheol), Jia, X. (Xiaoming), Santaniello, A. (Adam), Caillier, S.J. (Stacy), Andlauer, T.F.M. (Till F. M.), Barcellos, L.F. (Lisa), Berge, T. (Tone), Bernardinelli, L. (Luisa), Martinelli-Boneschi, F. (Filippo), Booth, D. (David), Briggs, F. (Farren), Celius, E.G. (Elisabeth), Comabella, M. (Manuel), Comi, G. (Giancarlo), Cree, B.A.C. (Bruce A. C.), Dalfonso, S., Dedham, K. (Katrina), Duquette, P. (Pierre), Dardiotis, E. (Efthimios), Esposito, F. (Francesco), Fontaine, B. (Bertrand), Gasperi, C. (Christiane), Goris, A. (An), Dubois, B. (Bénédicte), Gourraud, P.-A. (Pierre-Antoine), Hadjigeorgiou, G.M. (Georgios M.), Haines, J.L. (Jonathan), Hawkins, C. (Clive), Hemmer`, B. (Bernhard), Hintzen, R.Q. (Rogier), Horáková, D., Isobe, N. (Noriko), Kalra, S. (Seema), Kira, J.-I. (Jun-ichi), Khalil, M. (Michael), Kockum, I. (I.), Lill, C.M. (Christina), Lincoln, M.R. (Matthew R.), Luessi, F. (Felix), Martin, R. (Roland), Oturai, A. (Annette), Palotie, A. (Aarno), Kunkle, B. (Brian), Henry, R. (Roland), Saarela, O. (Olli), Ivinson, A.J. (Adrian), Olsson, T., Taylor, B. (Bruce), Stewart, G. (Graeme), Harbo, H.F. (H.), Compston, J.E. (Juliet), Hauser, S.L. (Stephen), Hafler, D.A. (David A.), Zipp, F. (Frauke), De Jager, P., Sawcer, S.J. (Stephen), Oksenberg, J.R. (Jorge), Baranzini, S.E. (Sergio), Madireddy, L. (Lohith), Patsopoulos, N.A. (Nikolaos A.), Cotsapas, C. (Chris), Bos, S.D. (Steffan), Beecham, A.H. (Ashley), McCauley, J. (John William), Kim, K. (Kicheol), Jia, X. (Xiaoming), Santaniello, A. (Adam), Caillier, S.J. (Stacy), Andlauer, T.F.M. (Till F. M.), Barcellos, L.F. (Lisa), Berge, T. (Tone), Bernardinelli, L. (Luisa), Martinelli-Boneschi, F. (Filippo), Booth, D. (David), Briggs, F. (Farren), Celius, E.G. (Elisabeth), Comabella, M. (Manuel), Comi, G. (Giancarlo), Cree, B.A.C. (Bruce A. C.), Dalfonso, S., Dedham, K. (Katrina), Duquette, P. (Pierre), Dardiotis, E. (Efthimios), Esposito, F. (Francesco), Fontaine, B. (Bertrand), Gasperi, C. (Christiane), Goris, A. (An), Dubois, B. (Bénédicte), Gourraud, P.-A. (Pierre-Antoine), Hadjigeorgiou, G.M. (Georgios M.), Haines, J.L. (Jonathan), Hawkins, C. (Clive), Hemmer`, B. (Bernhard), Hintzen, R.Q. (Rogier), Horáková, D., Isobe, N. (Noriko), Kalra, S. (Seema), Kira, J.-I. (Jun-ichi), Khalil, M. (Michael), Kockum, I. (I.), Lill, C.M. (Christina), Lincoln, M.R. (Matthew R.), Luessi, F. (Felix), Martin, R. (Roland), Oturai, A. (Annette), Palotie, A. (Aarno), Kunkle, B. (Brian), Henry, R. (Roland), Saarela, O. (Olli), Ivinson, A.J. (Adrian), Olsson, T., Taylor, B. (Bruce), Stewart, G. (Graeme), Harbo, H.F. (H.), Compston, J.E. (Juliet), Hauser, S.L. (Stephen), Hafler, D.A. (David A.), Zipp, F. (Frauke), De Jager, P., Sawcer, S.J. (Stephen), Oksenberg, J.R. (Jorge), and Baranzini, S.E. (Sergio) more...

Abstract

The original version of this Article contained an error in the spelling of the author Nikolaos A. Patsopoulos, which was incorrectly given as Niklaos A. Patsopoulos, and author Efthimios Dardiotis, which was incorrectly given as Dardiotis Efthimios. This has now been corrected in both the PDF and HTML versions of the Article. more...

Published
2019
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2. Gut bacteria from multiple sclerosis patients modulate human T cells and exacerbate symptoms in mouse models

Author

Cekanaviciute, E. (Egle), Yoo, B.B. (Bryan B.), Runia, T.F. (Tessel), Debelius, J.W. (Justine W.), Singh, S. (Sneha), Nelson, C.A. (Charlotte A.), Kanner, R. (Rachel), Bencosme, Y. (Yadira), Lee, Y.K. (Yun Kyung), Hauser, S.L. (Stephen), Crabtree-Hartman, E. (Elizabeth), Sand, I.K. (Ilana Katz), Gacias, M. (Mar), Zhu, Y. (Yungjiao), Casaccia, P. (Patrizia), Cree, B.A.C. (Bruce A. C.), Knight, R. (Rob), Mazmanian, S.K. (Sarkis K.), Baranzini, S.E. (Sergio), Cekanaviciute, E. (Egle), Yoo, B.B. (Bryan B.), Runia, T.F. (Tessel), Debelius, J.W. (Justine W.), Singh, S. (Sneha), Nelson, C.A. (Charlotte A.), Kanner, R. (Rachel), Bencosme, Y. (Yadira), Lee, Y.K. (Yun Kyung), Hauser, S.L. (Stephen), Crabtree-Hartman, E. (Elizabeth), Sand, I.K. (Ilana Katz), Gacias, M. (Mar), Zhu, Y. (Yungjiao), Casaccia, P. (Patrizia), Cree, B.A.C. (Bruce A. C.), Knight, R. (Rob), Mazmanian, S.K. (Sarkis K.), and Baranzini, S.E. (Sergio) more...

Abstract

The gut microbiota regulates T cell functions throughout the body. We hypothesized that intestinal bacteria impact the pathogenesis of multiple sclerosis (MS), an autoimmune disorder of the CNS and thus analyzed the microbiomes of 71 MS patients not undergoing treatment and 71 healthy controls. Although no major shifts in microbial community structure were found, we identified specific bacterial taxa that were significantly associated with MS. Akkermansia muciniphila and Acinetobacter calcoaceticus, both increased in MS patients, induced proinflammatory responses in human peripheral blood mononuclear cells and in monocolonized mice. In contrast, Parabacteroides distasonis, which was reduced in MS patients, stimulated antiinflammatory IL-10–expressing human CD4+CD25+ T cells and IL-10+FoxP3+ Tregs in mice. Finally, microbiota transplants from MS patients into germ-free mice resulted in more severe symptoms of experimental autoimmune encephalomyelitis and reduced proportions of IL-10+ Tregs compared with mice “humanized” with microbiota from healthy controls. This study identifies specific human gut bacteria that regulate adaptive autoimmune responses, suggesting therapeutic targeting of the microbiota as a treatment for MS. more...

Published
2017
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3. Analysis of immune-related loci identifies 48 new susceptibility variants for multiple sclerosis

Author

Beecham, A.H., Patsopoulos, N.A., Xifara, D.K., Davis, M.F., Kemppinen, A., Cotsapas, C., Shah, T.S., Spencer, C., Booth, D., Goris, A., Oturai, A., Saarela, J., Fontaine, B., Hemmer, B., Martin, C., Zipp, F., D'Alfonso, S., Martinelli-Boneschi, F., Taylor, B., Harbo, H.F., Kockum, I., Hillert, J., Olsson, T., Ban, M., Oksenberg, J.R., Hintzen, R., Barcellos, L.F., Agliardi, C., Alfredsson, L., Alizadeh, M., Anderson, C., Andrews, R., Søndergaard, H.B., Baker, A., Band, G., Baranzini, S.E., Barizzone, N., Barrett, J., Bellenguez, C., Bergamaschi, L., Bernardinelli, L., Berthele, A., Biberacher, V., Binder, T.M.C., Blackburn, H., Bomfim, I.L., Brambilla, P., Broadley, S., Brochet, B., Brundin, L., Buck, D., Butzkueven, H., Caillier, S.J., Camu, W., Carpentier, W., Cavalla, P., Celius, E.G., Coman, I., Comi, G., Corrado, L., Cosemans, L., Cournu-Rebeix, I., Cree, B.A.C., Cusi, D., Damotte, V., Defer, G., Delgado, S.R., Deloukas, P., di Sapio, A., Dilthey, A.T., Donnelly, P., Dubois, B., Duddy, M., Edkins, S., Elovaara, I., Esposito, F., Evangelou, N., Fiddes, B., Field, J., Franke, A., Freeman, C., Frohlich, I.Y., Galimberti, D., Gieger, C., Gourraud, P-A, Graetz, C., Graham, A., Grummel, V., Guaschino, C., Hadjixenofontos, A., Hakonarson, H., Halfpenny, C., Hall, G., Hall, P., Hamsten, A., Harley, J., Harrower, T., Hawkins, C., Hellenthal, G., Hillier, C., Hobart, J., Hoshi, M., Hunt, S.E., Jagodic, M., Jelčić, I., Jochim, A., Kendall, B., Kermode, A., Kilpatrick, T., Koivisto, K., Konidari, I., Korn, T., Kronsbein, H., Langford, C., Larsson, M., Lathrop, M., Lebrun-Frenay, C., Lechner-Scott, J., Lee, M.H., Leone, M.A., Leppä, V., Liberatore, G., Lie, B.A., Lill, C.M., Linden, M., Link, J., Luessi, F., Lycke, J., Macciardi, F., Männistö, S., Manrique, C.P., Martin, R., Martinelli, V., Mason, D., Mazibrada, G., McCabe, C., Mero, I-L, Mescheriakova, J., Moutsianas, L., Myhr, K-M, Nagels, G., Nicholas, R., Nilsson, P., Piehl, F., Pirinen, M., Price, S.E., Quach, H., Reunanen, M., Robberecht, W., Robertson, N.P., Rodegher, M., Rog, D., Salvetti, M., Schnetz-Boutaud, N.C., Sellebjerg, F., Selter, R.C., Schaefer, C., Shaunak, S., Shen, L., Shields, S., Siffrin, V., Slee, M., Sorensen, P.S., Sorosina, M., Sospedra, M., Spurkland, A., Strange, A., Sundqvist, E., Thijs, V., Thorpe, J., Ticca, A., Tienari, P., van Duijn, C., Visser, E.M., Vucic, S., Westerlind, H., Wiley, J.S., Wilkins, A., Wilson, J.F., Winkelmann, J., Zajicek, J., Zindler, E., Haines, J.L., Pericak-Vance, M.A., Ivinson, A.J., Stewart, G., Hafler, D., Hauser, S.L., Compston, A., McVean, G., De Jager, P., Sawcer, S.J., McCauley, J.L., Beecham, A.H., Patsopoulos, N.A., Xifara, D.K., Davis, M.F., Kemppinen, A., Cotsapas, C., Shah, T.S., Spencer, C., Booth, D., Goris, A., Oturai, A., Saarela, J., Fontaine, B., Hemmer, B., Martin, C., Zipp, F., D'Alfonso, S., Martinelli-Boneschi, F., Taylor, B., Harbo, H.F., Kockum, I., Hillert, J., Olsson, T., Ban, M., Oksenberg, J.R., Hintzen, R., Barcellos, L.F., Agliardi, C., Alfredsson, L., Alizadeh, M., Anderson, C., Andrews, R., Søndergaard, H.B., Baker, A., Band, G., Baranzini, S.E., Barizzone, N., Barrett, J., Bellenguez, C., Bergamaschi, L., Bernardinelli, L., Berthele, A., Biberacher, V., Binder, T.M.C., Blackburn, H., Bomfim, I.L., Brambilla, P., Broadley, S., Brochet, B., Brundin, L., Buck, D., Butzkueven, H., Caillier, S.J., Camu, W., Carpentier, W., Cavalla, P., Celius, E.G., Coman, I., Comi, G., Corrado, L., Cosemans, L., Cournu-Rebeix, I., Cree, B.A.C., Cusi, D., Damotte, V., Defer, G., Delgado, S.R., Deloukas, P., di Sapio, A., Dilthey, A.T., Donnelly, P., Dubois, B., Duddy, M., Edkins, S., Elovaara, I., Esposito, F., Evangelou, N., Fiddes, B., Field, J., Franke, A., Freeman, C., Frohlich, I.Y., Galimberti, D., Gieger, C., Gourraud, P-A, Graetz, C., Graham, A., Grummel, V., Guaschino, C., Hadjixenofontos, A., Hakonarson, H., Halfpenny, C., Hall, G., Hall, P., Hamsten, A., Harley, J., Harrower, T., Hawkins, C., Hellenthal, G., Hillier, C., Hobart, J., Hoshi, M., Hunt, S.E., Jagodic, M., Jelčić, I., Jochim, A., Kendall, B., Kermode, A., Kilpatrick, T., Koivisto, K., Konidari, I., Korn, T., Kronsbein, H., Langford, C., Larsson, M., Lathrop, M., Lebrun-Frenay, C., Lechner-Scott, J., Lee, M.H., Leone, M.A., Leppä, V., Liberatore, G., Lie, B.A., Lill, C.M., Linden, M., Link, J., Luessi, F., Lycke, J., Macciardi, F., Männistö, S., Manrique, C.P., Martin, R., Martinelli, V., Mason, D., Mazibrada, G., McCabe, C., Mero, I-L, Mescheriakova, J., Moutsianas, L., Myhr, K-M, Nagels, G., Nicholas, R., Nilsson, P., Piehl, F., Pirinen, M., Price, S.E., Quach, H., Reunanen, M., Robberecht, W., Robertson, N.P., Rodegher, M., Rog, D., Salvetti, M., Schnetz-Boutaud, N.C., Sellebjerg, F., Selter, R.C., Schaefer, C., Shaunak, S., Shen, L., Shields, S., Siffrin, V., Slee, M., Sorensen, P.S., Sorosina, M., Sospedra, M., Spurkland, A., Strange, A., Sundqvist, E., Thijs, V., Thorpe, J., Ticca, A., Tienari, P., van Duijn, C., Visser, E.M., Vucic, S., Westerlind, H., Wiley, J.S., Wilkins, A., Wilson, J.F., Winkelmann, J., Zajicek, J., Zindler, E., Haines, J.L., Pericak-Vance, M.A., Ivinson, A.J., Stewart, G., Hafler, D., Hauser, S.L., Compston, A., McVean, G., De Jager, P., Sawcer, S.J., and McCauley, J.L. more...

Abstract

Using the ImmunoChip custom genotyping array, we analyzed 14,498 subjects with multiple sclerosis and 24,091 healthy controls for 161,311 autosomal variants and identified 135 potentially associated regions (P < 1.0 × 10−4). In a replication phase, we combined these data with previous genome-wide association study (GWAS) data from an independent 14,802 subjects with multiple sclerosis and 26,703 healthy controls. In these 80,094 individuals of European ancestry, we identified 48 new susceptibility variants (P < 5.0 × 10−8), 3 of which we found after conditioning on previously identified variants. Thus, there are now 110 established multiple sclerosis risk variants at 103 discrete loci outside of the major histocompatibility complex. With high-resolution Bayesian fine mapping, we identified five regions where one variant accounted for more than 50% of the posterior probability of association. This study enhances the catalog of multiple sclerosis risk variants and illustrates the value of fine mapping in the resolution of GWAS signals. more...

Published
2013

4. Analysis of immune-related loci identifies 48 new susceptibility variants for multiple sclerosis

Author

Beecham, A.H., Patsopoulos, N.A., Xifara, D.K., Davis, M.F., Kemppinen, A., Cotsapas, C., Shah, T.S., Spencer, C., Booth, D., Goris, A., Oturai, A., Saarela, J., Fontaine, B., Hemmer, B., Martin, C., Zipp, F., D'Alfonso, S., Martinelli-Boneschi, F., Taylor, B., Harbo, H.F., Kockum, I., Hillert, J., Olsson, T., Ban, M., Oksenberg, J.R., Hintzen, R., Barcellos, L.F., Agliardi, C., Alfredsson, L., Alizadeh, M., Anderson, C., Andrews, R., Søndergaard, H.B., Baker, A., Band, G., Baranzini, S.E., Barizzone, N., Barrett, J., Bellenguez, C., Bergamaschi, L., Bernardinelli, L., Berthele, A., Biberacher, V., Binder, T.M.C., Blackburn, H., Bomfim, I.L., Brambilla, P., Broadley, S., Brochet, B., Brundin, L., Buck, D., Butzkueven, H., Caillier, S.J., Camu, W., Carpentier, W., Cavalla, P., Celius, E.G., Coman, I., Comi, G., Corrado, L., Cosemans, L., Cournu-Rebeix, I., Cree, B.A.C., Cusi, D., Damotte, V., Defer, G., Delgado, S.R., Deloukas, P., di Sapio, A., Dilthey, A.T., Donnelly, P., Dubois, B., Duddy, M., Edkins, S., Elovaara, I., Esposito, F., Evangelou, N., Fiddes, B., Field, J., Franke, A., Freeman, C., Frohlich, I.Y., Galimberti, D., Gieger, C., Gourraud, P-A, Graetz, C., Graham, A., Grummel, V., Guaschino, C., Hadjixenofontos, A., Hakonarson, H., Halfpenny, C., Hall, G., Hall, P., Hamsten, A., Harley, J., Harrower, T., Hawkins, C., Hellenthal, G., Hillier, C., Hobart, J., Hoshi, M., Hunt, S.E., Jagodic, M., Jelčić, I., Jochim, A., Kendall, B., Kermode, A., Kilpatrick, T., Koivisto, K., Konidari, I., Korn, T., Kronsbein, H., Langford, C., Larsson, M., Lathrop, M., Lebrun-Frenay, C., Lechner-Scott, J., Lee, M.H., Leone, M.A., Leppä, V., Liberatore, G., Lie, B.A., Lill, C.M., Linden, M., Link, J., Luessi, F., Lycke, J., Macciardi, F., Männistö, S., Manrique, C.P., Martin, R., Martinelli, V., Mason, D., Mazibrada, G., McCabe, C., Mero, I-L, Mescheriakova, J., Moutsianas, L., Myhr, K-M, Nagels, G., Nicholas, R., Nilsson, P., Piehl, F., Pirinen, M., Price, S.E., Quach, H., Reunanen, M., Robberecht, W., Robertson, N.P., Rodegher, M., Rog, D., Salvetti, M., Schnetz-Boutaud, N.C., Sellebjerg, F., Selter, R.C., Schaefer, C., Shaunak, S., Shen, L., Shields, S., Siffrin, V., Slee, M., Sorensen, P.S., Sorosina, M., Sospedra, M., Spurkland, A., Strange, A., Sundqvist, E., Thijs, V., Thorpe, J., Ticca, A., Tienari, P., van Duijn, C., Visser, E.M., Vucic, S., Westerlind, H., Wiley, J.S., Wilkins, A., Wilson, J.F., Winkelmann, J., Zajicek, J., Zindler, E., Haines, J.L., Pericak-Vance, M.A., Ivinson, A.J., Stewart, G., Hafler, D., Hauser, S.L., Compston, A., McVean, G., De Jager, P., Sawcer, S.J., McCauley, J.L., Beecham, A.H., Patsopoulos, N.A., Xifara, D.K., Davis, M.F., Kemppinen, A., Cotsapas, C., Shah, T.S., Spencer, C., Booth, D., Goris, A., Oturai, A., Saarela, J., Fontaine, B., Hemmer, B., Martin, C., Zipp, F., D'Alfonso, S., Martinelli-Boneschi, F., Taylor, B., Harbo, H.F., Kockum, I., Hillert, J., Olsson, T., Ban, M., Oksenberg, J.R., Hintzen, R., Barcellos, L.F., Agliardi, C., Alfredsson, L., Alizadeh, M., Anderson, C., Andrews, R., Søndergaard, H.B., Baker, A., Band, G., Baranzini, S.E., Barizzone, N., Barrett, J., Bellenguez, C., Bergamaschi, L., Bernardinelli, L., Berthele, A., Biberacher, V., Binder, T.M.C., Blackburn, H., Bomfim, I.L., Brambilla, P., Broadley, S., Brochet, B., Brundin, L., Buck, D., Butzkueven, H., Caillier, S.J., Camu, W., Carpentier, W., Cavalla, P., Celius, E.G., Coman, I., Comi, G., Corrado, L., Cosemans, L., Cournu-Rebeix, I., Cree, B.A.C., Cusi, D., Damotte, V., Defer, G., Delgado, S.R., Deloukas, P., di Sapio, A., Dilthey, A.T., Donnelly, P., Dubois, B., Duddy, M., Edkins, S., Elovaara, I., Esposito, F., Evangelou, N., Fiddes, B., Field, J., Franke, A., Freeman, C., Frohlich, I.Y., Galimberti, D., Gieger, C., Gourraud, P-A, Graetz, C., Graham, A., Grummel, V., Guaschino, C., Hadjixenofontos, A., Hakonarson, H., Halfpenny, C., Hall, G., Hall, P., Hamsten, A., Harley, J., Harrower, T., Hawkins, C., Hellenthal, G., Hillier, C., Hobart, J., Hoshi, M., Hunt, S.E., Jagodic, M., Jelčić, I., Jochim, A., Kendall, B., Kermode, A., Kilpatrick, T., Koivisto, K., Konidari, I., Korn, T., Kronsbein, H., Langford, C., Larsson, M., Lathrop, M., Lebrun-Frenay, C., Lechner-Scott, J., Lee, M.H., Leone, M.A., Leppä, V., Liberatore, G., Lie, B.A., Lill, C.M., Linden, M., Link, J., Luessi, F., Lycke, J., Macciardi, F., Männistö, S., Manrique, C.P., Martin, R., Martinelli, V., Mason, D., Mazibrada, G., McCabe, C., Mero, I-L, Mescheriakova, J., Moutsianas, L., Myhr, K-M, Nagels, G., Nicholas, R., Nilsson, P., Piehl, F., Pirinen, M., Price, S.E., Quach, H., Reunanen, M., Robberecht, W., Robertson, N.P., Rodegher, M., Rog, D., Salvetti, M., Schnetz-Boutaud, N.C., Sellebjerg, F., Selter, R.C., Schaefer, C., Shaunak, S., Shen, L., Shields, S., Siffrin, V., Slee, M., Sorensen, P.S., Sorosina, M., Sospedra, M., Spurkland, A., Strange, A., Sundqvist, E., Thijs, V., Thorpe, J., Ticca, A., Tienari, P., van Duijn, C., Visser, E.M., Vucic, S., Westerlind, H., Wiley, J.S., Wilkins, A., Wilson, J.F., Winkelmann, J., Zajicek, J., Zindler, E., Haines, J.L., Pericak-Vance, M.A., Ivinson, A.J., Stewart, G., Hafler, D., Hauser, S.L., Compston, A., McVean, G., De Jager, P., Sawcer, S.J., and McCauley, J.L. more...

Abstract

Using the ImmunoChip custom genotyping array, we analyzed 14,498 subjects with multiple sclerosis and 24,091 healthy controls for 161,311 autosomal variants and identified 135 potentially associated regions (P < 1.0 × 10−4). In a replication phase, we combined these data with previous genome-wide association study (GWAS) data from an independent 14,802 subjects with multiple sclerosis and 26,703 healthy controls. In these 80,094 individuals of European ancestry, we identified 48 new susceptibility variants (P < 5.0 × 10−8), 3 of which we found after conditioning on previously identified variants. Thus, there are now 110 established multiple sclerosis risk variants at 103 discrete loci outside of the major histocompatibility complex. With high-resolution Bayesian fine mapping, we identified five regions where one variant accounted for more than 50% of the posterior probability of association. This study enhances the catalog of multiple sclerosis risk variants and illustrates the value of fine mapping in the resolution of GWAS signals. more...

Published
2013

5. Modeling the cumulative genetic risk for multiple sclerosis from genome-wide association data

Author

Wang, J.H., Pappas, D., De Jager, P.L., Pelletier, D., de Bakker, P.I.W., Kappos, L., Polman, C.H., Chibnik, L.B., Hafler, D.A., Matthews, P.M., Hauser, S.L., Baranzini, S.E., Oksenberg, J.R., Kermode, A.G., Wang, J.H., Pappas, D., De Jager, P.L., Pelletier, D., de Bakker, P.I.W., Kappos, L., Polman, C.H., Chibnik, L.B., Hafler, D.A., Matthews, P.M., Hauser, S.L., Baranzini, S.E., Oksenberg, J.R., and Kermode, A.G. more...

Abstract

BACKGROUND: Multiple sclerosis (MS) is the most common cause of chronic neurologic disability beginning in early to middle adult life. Results from recent genome-wide association studies (GWAS) have substantially lengthened the list of disease loci and provide convincing evidence supporting a multifactorial and polygenic model of inheritance. Nevertheless, the knowledge of MS genetics remains incomplete, with many risk alleles still to be revealed. METHODS: We used a discovery GWAS dataset (8,844 samples, 2,124 cases and 6,720 controls) and a multi-step logistic regression protocol to identify novel genetic associations. The emerging genetic profile included 350 independent markers and was used to calculate and estimate the cumulative genetic risk in an independent validation dataset (3,606 samples). Analysis of covariance (ANCOVA) was implemented to compare clinical characteristics of individuals with various degrees of genetic risk. Gene ontology and pathway enrichment analysis was done using the DAVID functional annotation tool, the GO Tree Machine, and the Pathway-Express profiling tool. RESULTS: In the discovery dataset, the median cumulative genetic risk (P-Hat) was 0.903 and 0.007 in the case and control groups, respectively, together with 79.9% classification sensitivity and 95.8% specificity. The identified profile shows a significant enrichment of genes involved in the immune response, cell adhesion, cell communication/signaling, nervous system development, and neuronal signaling, including ionotropic glutamate receptors, which have been implicated in the pathological mechanism driving neurodegeneration. In the validation dataset, the median cumulative genetic risk was 0.59 and 0.32 in the case and control groups, respectively, with classification sensitivity 62.3% and specificity 75.9%. No differences in disease progression or T2-lesion volumes were observed among four levels of predicted genetic risk groups (high, medium, low, misclassified). On the othe more...

Published
2011

6. Genetic risk and a primary role for cell-mediated immune mechanisms in multiple sclerosis

Author

Sawcer, S., Hellenthal, G., Pirinen, M., Spencer, C.C.A., Patsopoulos, N.A., Moutsianas, L., Dilthey, A., Su, Z., Freeman, C., Hunt, S.E., Edkins, S., Gray, E., Booth, D.R., Potter, S.C., Goris, A., Band, G., Bang Oturai, A., Strange, A., Saarela, J., Bellenguez, C., Fontaine, B., Gillman, M., Hemmer, B., Gwilliam, R., Zipp, F., Jayakumar, A., Martin, R., Leslie, S., Hawkins, S., Giannoulatou, E., D’alfonso, S., Blackburn, H., Martinelli Boneschi, F., Liddle, J., Harbo, H.F., Perez, M.L., Spurkland, A., Waller, M.J., Mycko, M.P., Ricketts, M., Comabella, M., Hammond, N., Kockum, I., McCann, O.T., Ban, M., Whittaker, P., Kemppinen, A., Weston, P., Hawkins, C., Widaa, S., Zajicek, J., Dronov, S., Robertson, N., Bumpstead, S.J., Barcellos, L.F., Ravindrarajah, R., Abraham, R., Alfredsson, L., Ardlie, K., Aubin, C., Baker, A., Baker, K., Baranzini, S.E., Bergamaschi, L., Bergamaschi, R., Bernstein, A., Berthele, A., Boggild, M., Bradfield, J.P., Brassat, D., Broadley, S.A., Buck, D., Butzkueven, H., Capra, R., Carroll, W.M., Cavalla, P., Celius, E.G., Cepok, S., Chiavacci, R., Clerget-Darpoux, F., Clysters, K., Comi, G., Cossburn, M., Cournu-Rebeix, I., Cox, M.B., Cozen, W., Cree, B.A.C., Cross, A.H., Cusi, D., Daly, M.J., Davis, E., de Bakker, P.I.W., Debouverie, M., D’hooghe, M.B., Dixon, K., Dobosi, R., Dubois, B., Ellinghaus, D., Elovaara, I., Esposito, F., Fontenille, C., Foote, S., Franke, A., Galimberti, D., Ghezzi, A., Glessner, J., Gomez, R., Gout, O., Graham, C., Grant, S.F.A., Rosa Guerini, F., Hakonarson, H., Hall, P., Hamsten, A., Hartung, H-P, Heard, R.N., Heath, S., Hobart, J., Hoshi, M., Infante-Duarte, C., Ingram, G., Ingram, W., Islam, T., Jagodic, M., Kabesch, M., Kermode, A.G., Kilpatrick, T.J., Kim, C., Klopp, N., Koivisto, K., Larsson, M., Lathrop, M., Lechner-Scott, J.S., Leone, M.A., Leppä, V., Liljedahl, U., Lima Bomfim, I., Lincoln, R.R., Link, J., Liu, J., Lorentzen, Å.R., Lupoli, S., Macciardi, F., Mack, T., Marriott, M., Martinelli, V., Mason, D., McCauley, J.L., Mentch, F., Mero, I-L, Mihalova, T., Montalban, X., Mottershead, J., Myhr, K-M, Naldi, P., Ollier, W., Page, A., Palotie, A., Pelletier, J., Piccio, L., Pickersgill, T., Piehl, F., Pobywajlo, S., Quach, H.L., Ramsay, P.P., Reunanen, M., Reynolds, R., Rioux, J.D., Rodegher, M., Roesner, S., Rubio, J.P., Rückert, I-M, Salvetti, M., Salvi, E., Santaniello, A., Schaefer, C.A., Schreiber, S., Schulze, C., Scott, R.J., Sellebjerg, F., Selmaj, K.W., Sexton, D., Shen, L., Simms-Acuna, B., Skidmore, S., Sleiman, P.M.A., Smestad, C., Sørensen, P.S., Søndergaard, H.B., Stankovich, J., Strange, R.C., Sulonen, A-M, Sundqvist, E., Syvänen, A-C, Taddeo, F., Taylor, B., Blackwell, J.M., Tienari, P., Bramon, E., Tourbah, A., Brown, M.A., Tronczynska, E., Casas, J.P., Tubridy, N., Corvin, A., Vickery, J., Jankowski, J., Villoslada, P., Markus, H.S., Wang, K., Mathew, C.G., Wason, J., Palmer, C.N.A., Wichmann, H-E, Plomin, R., Willoughby, E., Rautanen, A., Winkelmann, J., Wittig, M., Trembath, R.C., Yaouanq, J., Viswanathan, A.C., Zhang, H., Wood, N.W., Zuvich, R., Deloukas, P., Langford, C., Duncanson, A., Oksenberg, J.R., Pericak-Vance, M.A., Haines, J.L., Olsson, T., Hillert, J., Ivinson, A.J., De Jager, P.L., Peltonen, L., Stewart, G.J., Hafler, D.A., Hauser, S.L., McVean, G., Donnelly, P., Compston, A., Sawcer, S., Hellenthal, G., Pirinen, M., Spencer, C.C.A., Patsopoulos, N.A., Moutsianas, L., Dilthey, A., Su, Z., Freeman, C., Hunt, S.E., Edkins, S., Gray, E., Booth, D.R., Potter, S.C., Goris, A., Band, G., Bang Oturai, A., Strange, A., Saarela, J., Bellenguez, C., Fontaine, B., Gillman, M., Hemmer, B., Gwilliam, R., Zipp, F., Jayakumar, A., Martin, R., Leslie, S., Hawkins, S., Giannoulatou, E., D’alfonso, S., Blackburn, H., Martinelli Boneschi, F., Liddle, J., Harbo, H.F., Perez, M.L., Spurkland, A., Waller, M.J., Mycko, M.P., Ricketts, M., Comabella, M., Hammond, N., Kockum, I., McCann, O.T., Ban, M., Whittaker, P., Kemppinen, A., Weston, P., Hawkins, C., Widaa, S., Zajicek, J., Dronov, S., Robertson, N., Bumpstead, S.J., Barcellos, L.F., Ravindrarajah, R., Abraham, R., Alfredsson, L., Ardlie, K., Aubin, C., Baker, A., Baker, K., Baranzini, S.E., Bergamaschi, L., Bergamaschi, R., Bernstein, A., Berthele, A., Boggild, M., Bradfield, J.P., Brassat, D., Broadley, S.A., Buck, D., Butzkueven, H., Capra, R., Carroll, W.M., Cavalla, P., Celius, E.G., Cepok, S., Chiavacci, R., Clerget-Darpoux, F., Clysters, K., Comi, G., Cossburn, M., Cournu-Rebeix, I., Cox, M.B., Cozen, W., Cree, B.A.C., Cross, A.H., Cusi, D., Daly, M.J., Davis, E., de Bakker, P.I.W., Debouverie, M., D’hooghe, M.B., Dixon, K., Dobosi, R., Dubois, B., Ellinghaus, D., Elovaara, I., Esposito, F., Fontenille, C., Foote, S., Franke, A., Galimberti, D., Ghezzi, A., Glessner, J., Gomez, R., Gout, O., Graham, C., Grant, S.F.A., Rosa Guerini, F., Hakonarson, H., Hall, P., Hamsten, A., Hartung, H-P, Heard, R.N., Heath, S., Hobart, J., Hoshi, M., Infante-Duarte, C., Ingram, G., Ingram, W., Islam, T., Jagodic, M., Kabesch, M., Kermode, A.G., Kilpatrick, T.J., Kim, C., Klopp, N., Koivisto, K., Larsson, M., Lathrop, M., Lechner-Scott, J.S., Leone, M.A., Leppä, V., Liljedahl, U., Lima Bomfim, I., Lincoln, R.R., Link, J., Liu, J., Lorentzen, Å.R., Lupoli, S., Macciardi, F., Mack, T., Marriott, M., Martinelli, V., Mason, D., McCauley, J.L., Mentch, F., Mero, I-L, Mihalova, T., Montalban, X., Mottershead, J., Myhr, K-M, Naldi, P., Ollier, W., Page, A., Palotie, A., Pelletier, J., Piccio, L., Pickersgill, T., Piehl, F., Pobywajlo, S., Quach, H.L., Ramsay, P.P., Reunanen, M., Reynolds, R., Rioux, J.D., Rodegher, M., Roesner, S., Rubio, J.P., Rückert, I-M, Salvetti, M., Salvi, E., Santaniello, A., Schaefer, C.A., Schreiber, S., Schulze, C., Scott, R.J., Sellebjerg, F., Selmaj, K.W., Sexton, D., Shen, L., Simms-Acuna, B., Skidmore, S., Sleiman, P.M.A., Smestad, C., Sørensen, P.S., Søndergaard, H.B., Stankovich, J., Strange, R.C., Sulonen, A-M, Sundqvist, E., Syvänen, A-C, Taddeo, F., Taylor, B., Blackwell, J.M., Tienari, P., Bramon, E., Tourbah, A., Brown, M.A., Tronczynska, E., Casas, J.P., Tubridy, N., Corvin, A., Vickery, J., Jankowski, J., Villoslada, P., Markus, H.S., Wang, K., Mathew, C.G., Wason, J., Palmer, C.N.A., Wichmann, H-E, Plomin, R., Willoughby, E., Rautanen, A., Winkelmann, J., Wittig, M., Trembath, R.C., Yaouanq, J., Viswanathan, A.C., Zhang, H., Wood, N.W., Zuvich, R., Deloukas, P., Langford, C., Duncanson, A., Oksenberg, J.R., Pericak-Vance, M.A., Haines, J.L., Olsson, T., Hillert, J., Ivinson, A.J., De Jager, P.L., Peltonen, L., Stewart, G.J., Hafler, D.A., Hauser, S.L., McVean, G., Donnelly, P., and Compston, A. more...

Abstract

Multiple sclerosis is a common disease of the central nervous system in which the interplay between inflammatory and neurodegenerative processes typically results in intermittent neurological disturbance followed by progressive accumulation of disability1. Epidemiological studies have shown that genetic factors are primarily responsible for the substantially increased frequency of the disease seen in the relatives of affected individuals2, 3, and systematic attempts to identify linkage in multiplex families have confirmed that variation within the major histocompatibility complex (MHC) exerts the greatest individual effect on risk4. Modestly powered genome-wide association studies (GWAS)5, 6, 7, 8, 9, 10 have enabled more than 20 additional risk loci to be identified and have shown that multiple variants exerting modest individual effects have a key role in disease susceptibility11. Most of the genetic architecture underlying susceptibility to the disease remains to be defined and is anticipated to require the analysis of sample sizes that are beyond the numbers currently available to individual research groups. In a collaborative GWAS involving 9,772 cases of European descent collected by 23 research groups working in 15 different countries, we have replicated almost all of the previously suggested associations and identified at least a further 29 novel susceptibility loci. Within the MHC we have refined the identity of the HLA-DRB1 risk alleles and confirmed that variation in the HLA-A gene underlies the independent protective effect attributable to the class I region. Immunologically relevant genes are significantly overrepresented among those mapping close to the identified loci and particularly implicate T-helper-cell differentiation in the pathogenesis of multiple sclerosis. more...

Published
2011

7. Modeling the cumulative genetic risk for multiple sclerosis from genome-wide association data

Author

Wang, J.H., Pappas, D., De Jager, P.L., Pelletier, D., de Bakker, P.I.W., Kappos, L., Polman, C.H., Chibnik, L.B., Hafler, D.A., Matthews, P.M., Hauser, S.L., Baranzini, S.E., Oksenberg, J.R., Kermode, A.G., Wang, J.H., Pappas, D., De Jager, P.L., Pelletier, D., de Bakker, P.I.W., Kappos, L., Polman, C.H., Chibnik, L.B., Hafler, D.A., Matthews, P.M., Hauser, S.L., Baranzini, S.E., Oksenberg, J.R., and Kermode, A.G. more...

Abstract

BACKGROUND: Multiple sclerosis (MS) is the most common cause of chronic neurologic disability beginning in early to middle adult life. Results from recent genome-wide association studies (GWAS) have substantially lengthened the list of disease loci and provide convincing evidence supporting a multifactorial and polygenic model of inheritance. Nevertheless, the knowledge of MS genetics remains incomplete, with many risk alleles still to be revealed. METHODS: We used a discovery GWAS dataset (8,844 samples, 2,124 cases and 6,720 controls) and a multi-step logistic regression protocol to identify novel genetic associations. The emerging genetic profile included 350 independent markers and was used to calculate and estimate the cumulative genetic risk in an independent validation dataset (3,606 samples). Analysis of covariance (ANCOVA) was implemented to compare clinical characteristics of individuals with various degrees of genetic risk. Gene ontology and pathway enrichment analysis was done using the DAVID functional annotation tool, the GO Tree Machine, and the Pathway-Express profiling tool. RESULTS: In the discovery dataset, the median cumulative genetic risk (P-Hat) was 0.903 and 0.007 in the case and control groups, respectively, together with 79.9% classification sensitivity and 95.8% specificity. The identified profile shows a significant enrichment of genes involved in the immune response, cell adhesion, cell communication/signaling, nervous system development, and neuronal signaling, including ionotropic glutamate receptors, which have been implicated in the pathological mechanism driving neurodegeneration. In the validation dataset, the median cumulative genetic risk was 0.59 and 0.32 in the case and control groups, respectively, with classification sensitivity 62.3% and specificity 75.9%. No differences in disease progression or T2-lesion volumes were observed among four levels of predicted genetic risk groups (high, medium, low, misclassified). On the othe more...

Published
2011

8. Genetic risk and a primary role for cell-mediated immune mechanisms in multiple sclerosis

Author

Sawcer, S., Hellenthal, G., Pirinen, M., Spencer, C.C.A., Patsopoulos, N.A., Moutsianas, L., Dilthey, A., Su, Z., Freeman, C., Hunt, S.E., Edkins, S., Gray, E., Booth, D.R., Potter, S.C., Goris, A., Band, G., Bang Oturai, A., Strange, A., Saarela, J., Bellenguez, C., Fontaine, B., Gillman, M., Hemmer, B., Gwilliam, R., Zipp, F., Jayakumar, A., Martin, R., Leslie, S., Hawkins, S., Giannoulatou, E., D’alfonso, S., Blackburn, H., Martinelli Boneschi, F., Liddle, J., Harbo, H.F., Perez, M.L., Spurkland, A., Waller, M.J., Mycko, M.P., Ricketts, M., Comabella, M., Hammond, N., Kockum, I., McCann, O.T., Ban, M., Whittaker, P., Kemppinen, A., Weston, P., Hawkins, C., Widaa, S., Zajicek, J., Dronov, S., Robertson, N., Bumpstead, S.J., Barcellos, L.F., Ravindrarajah, R., Abraham, R., Alfredsson, L., Ardlie, K., Aubin, C., Baker, A., Baker, K., Baranzini, S.E., Bergamaschi, L., Bergamaschi, R., Bernstein, A., Berthele, A., Boggild, M., Bradfield, J.P., Brassat, D., Broadley, S.A., Buck, D., Butzkueven, H., Capra, R., Carroll, W.M., Cavalla, P., Celius, E.G., Cepok, S., Chiavacci, R., Clerget-Darpoux, F., Clysters, K., Comi, G., Cossburn, M., Cournu-Rebeix, I., Cox, M.B., Cozen, W., Cree, B.A.C., Cross, A.H., Cusi, D., Daly, M.J., Davis, E., de Bakker, P.I.W., Debouverie, M., D’hooghe, M.B., Dixon, K., Dobosi, R., Dubois, B., Ellinghaus, D., Elovaara, I., Esposito, F., Fontenille, C., Foote, S., Franke, A., Galimberti, D., Ghezzi, A., Glessner, J., Gomez, R., Gout, O., Graham, C., Grant, S.F.A., Rosa Guerini, F., Hakonarson, H., Hall, P., Hamsten, A., Hartung, H-P, Heard, R.N., Heath, S., Hobart, J., Hoshi, M., Infante-Duarte, C., Ingram, G., Ingram, W., Islam, T., Jagodic, M., Kabesch, M., Kermode, A.G., Kilpatrick, T.J., Kim, C., Klopp, N., Koivisto, K., Larsson, M., Lathrop, M., Lechner-Scott, J.S., Leone, M.A., Leppä, V., Liljedahl, U., Lima Bomfim, I., Lincoln, R.R., Link, J., Liu, J., Lorentzen, Å.R., Lupoli, S., Macciardi, F., Mack, T., Marriott, M., Martinelli, V., Mason, D., McCauley, J.L., Mentch, F., Mero, I-L, Mihalova, T., Montalban, X., Mottershead, J., Myhr, K-M, Naldi, P., Ollier, W., Page, A., Palotie, A., Pelletier, J., Piccio, L., Pickersgill, T., Piehl, F., Pobywajlo, S., Quach, H.L., Ramsay, P.P., Reunanen, M., Reynolds, R., Rioux, J.D., Rodegher, M., Roesner, S., Rubio, J.P., Rückert, I-M, Salvetti, M., Salvi, E., Santaniello, A., Schaefer, C.A., Schreiber, S., Schulze, C., Scott, R.J., Sellebjerg, F., Selmaj, K.W., Sexton, D., Shen, L., Simms-Acuna, B., Skidmore, S., Sleiman, P.M.A., Smestad, C., Sørensen, P.S., Søndergaard, H.B., Stankovich, J., Strange, R.C., Sulonen, A-M, Sundqvist, E., Syvänen, A-C, Taddeo, F., Taylor, B., Blackwell, J.M., Tienari, P., Bramon, E., Tourbah, A., Brown, M.A., Tronczynska, E., Casas, J.P., Tubridy, N., Corvin, A., Vickery, J., Jankowski, J., Villoslada, P., Markus, H.S., Wang, K., Mathew, C.G., Wason, J., Palmer, C.N.A., Wichmann, H-E, Plomin, R., Willoughby, E., Rautanen, A., Winkelmann, J., Wittig, M., Trembath, R.C., Yaouanq, J., Viswanathan, A.C., Zhang, H., Wood, N.W., Zuvich, R., Deloukas, P., Langford, C., Duncanson, A., Oksenberg, J.R., Pericak-Vance, M.A., Haines, J.L., Olsson, T., Hillert, J., Ivinson, A.J., De Jager, P.L., Peltonen, L., Stewart, G.J., Hafler, D.A., Hauser, S.L., McVean, G., Donnelly, P., Compston, A., Sawcer, S., Hellenthal, G., Pirinen, M., Spencer, C.C.A., Patsopoulos, N.A., Moutsianas, L., Dilthey, A., Su, Z., Freeman, C., Hunt, S.E., Edkins, S., Gray, E., Booth, D.R., Potter, S.C., Goris, A., Band, G., Bang Oturai, A., Strange, A., Saarela, J., Bellenguez, C., Fontaine, B., Gillman, M., Hemmer, B., Gwilliam, R., Zipp, F., Jayakumar, A., Martin, R., Leslie, S., Hawkins, S., Giannoulatou, E., D’alfonso, S., Blackburn, H., Martinelli Boneschi, F., Liddle, J., Harbo, H.F., Perez, M.L., Spurkland, A., Waller, M.J., Mycko, M.P., Ricketts, M., Comabella, M., Hammond, N., Kockum, I., McCann, O.T., Ban, M., Whittaker, P., Kemppinen, A., Weston, P., Hawkins, C., Widaa, S., Zajicek, J., Dronov, S., Robertson, N., Bumpstead, S.J., Barcellos, L.F., Ravindrarajah, R., Abraham, R., Alfredsson, L., Ardlie, K., Aubin, C., Baker, A., Baker, K., Baranzini, S.E., Bergamaschi, L., Bergamaschi, R., Bernstein, A., Berthele, A., Boggild, M., Bradfield, J.P., Brassat, D., Broadley, S.A., Buck, D., Butzkueven, H., Capra, R., Carroll, W.M., Cavalla, P., Celius, E.G., Cepok, S., Chiavacci, R., Clerget-Darpoux, F., Clysters, K., Comi, G., Cossburn, M., Cournu-Rebeix, I., Cox, M.B., Cozen, W., Cree, B.A.C., Cross, A.H., Cusi, D., Daly, M.J., Davis, E., de Bakker, P.I.W., Debouverie, M., D’hooghe, M.B., Dixon, K., Dobosi, R., Dubois, B., Ellinghaus, D., Elovaara, I., Esposito, F., Fontenille, C., Foote, S., Franke, A., Galimberti, D., Ghezzi, A., Glessner, J., Gomez, R., Gout, O., Graham, C., Grant, S.F.A., Rosa Guerini, F., Hakonarson, H., Hall, P., Hamsten, A., Hartung, H-P, Heard, R.N., Heath, S., Hobart, J., Hoshi, M., Infante-Duarte, C., Ingram, G., Ingram, W., Islam, T., Jagodic, M., Kabesch, M., Kermode, A.G., Kilpatrick, T.J., Kim, C., Klopp, N., Koivisto, K., Larsson, M., Lathrop, M., Lechner-Scott, J.S., Leone, M.A., Leppä, V., Liljedahl, U., Lima Bomfim, I., Lincoln, R.R., Link, J., Liu, J., Lorentzen, Å.R., Lupoli, S., Macciardi, F., Mack, T., Marriott, M., Martinelli, V., Mason, D., McCauley, J.L., Mentch, F., Mero, I-L, Mihalova, T., Montalban, X., Mottershead, J., Myhr, K-M, Naldi, P., Ollier, W., Page, A., Palotie, A., Pelletier, J., Piccio, L., Pickersgill, T., Piehl, F., Pobywajlo, S., Quach, H.L., Ramsay, P.P., Reunanen, M., Reynolds, R., Rioux, J.D., Rodegher, M., Roesner, S., Rubio, J.P., Rückert, I-M, Salvetti, M., Salvi, E., Santaniello, A., Schaefer, C.A., Schreiber, S., Schulze, C., Scott, R.J., Sellebjerg, F., Selmaj, K.W., Sexton, D., Shen, L., Simms-Acuna, B., Skidmore, S., Sleiman, P.M.A., Smestad, C., Sørensen, P.S., Søndergaard, H.B., Stankovich, J., Strange, R.C., Sulonen, A-M, Sundqvist, E., Syvänen, A-C, Taddeo, F., Taylor, B., Blackwell, J.M., Tienari, P., Bramon, E., Tourbah, A., Brown, M.A., Tronczynska, E., Casas, J.P., Tubridy, N., Corvin, A., Vickery, J., Jankowski, J., Villoslada, P., Markus, H.S., Wang, K., Mathew, C.G., Wason, J., Palmer, C.N.A., Wichmann, H-E, Plomin, R., Willoughby, E., Rautanen, A., Winkelmann, J., Wittig, M., Trembath, R.C., Yaouanq, J., Viswanathan, A.C., Zhang, H., Wood, N.W., Zuvich, R., Deloukas, P., Langford, C., Duncanson, A., Oksenberg, J.R., Pericak-Vance, M.A., Haines, J.L., Olsson, T., Hillert, J., Ivinson, A.J., De Jager, P.L., Peltonen, L., Stewart, G.J., Hafler, D.A., Hauser, S.L., McVean, G., Donnelly, P., and Compston, A. more...

Abstract

Multiple sclerosis is a common disease of the central nervous system in which the interplay between inflammatory and neurodegenerative processes typically results in intermittent neurological disturbance followed by progressive accumulation of disability1. Epidemiological studies have shown that genetic factors are primarily responsible for the substantially increased frequency of the disease seen in the relatives of affected individuals2, 3, and systematic attempts to identify linkage in multiplex families have confirmed that variation within the major histocompatibility complex (MHC) exerts the greatest individual effect on risk4. Modestly powered genome-wide association studies (GWAS)5, 6, 7, 8, 9, 10 have enabled more than 20 additional risk loci to be identified and have shown that multiple variants exerting modest individual effects have a key role in disease susceptibility11. Most of the genetic architecture underlying susceptibility to the disease remains to be defined and is anticipated to require the analysis of sample sizes that are beyond the numbers currently available to individual research groups. In a collaborative GWAS involving 9,772 cases of European descent collected by 23 research groups working in 15 different countries, we have replicated almost all of the previously suggested associations and identified at least a further 29 novel susceptibility loci. Within the MHC we have refined the identity of the HLA-DRB1 risk alleles and confirmed that variation in the HLA-A gene underlies the independent protective effect attributable to the class I region. Immunologically relevant genes are significantly overrepresented among those mapping close to the identified loci and particularly implicate T-helper-cell differentiation in the pathogenesis of multiple sclerosis. more...

Published
2011