Replication of top markers of a genome-wide association study in multiple sclerosis in Spain
"Nature" ha publicado el presente trabajo en el que un extenso grupo de investigadores españoles adscritos a instituciones públicas exploran las raices genéticas de la esclerosis múltiple (EM). Ojalá que los recortes en los presupuestos no malogren estudios de excelencia como el que aquí doy a conocer. De momento España ocupa el lugar número 9 en publicaciones científicas internacionales.
Autores
M L Cavanillas1,16, O Fernández2,16, M Comabella3,16, A Alcina4, M Fedetz4, G Izquierdo5, M Lucas6, M C Cénit1, R Arroyo7, K Vandenbroeck8,9, I Alloza8, M García-Barcina10, A Antigüedad11, L Leyva12, C L Gómez2, J Olascoaga13, D Otaegui14, Y Blanco15, A Saiz15, X Montalbán3, F Matesanz4,16 and E Urcelay1,16
- 1Immunology Department Hospital Clínico S. Carlos, Madrid, Spain
- 2Inst. de Neurociencias Clínicas, Hospital Carlos Haya, Málaga, Spain
- 3Centre d’Esclerosi Múltiple de Catalunya, CEM-Cat, Unitat de Neuroimmunologia Clínica, Hospital Universitari Vall d’Hebron (HUVH), Barcelona, Spain
- 4Instituto de Parasitología y Biomedicina ‘López Neyra’, C. S. I. C., Granada, Spain
- 5Unidad de Esclerosis Múltiple. Hospital Virgen Macarena, Sevilla, Spain
- 6Servicio de Biología Molecular. Hospital Virgen Macarena, Sevilla, Spain
- 7Multiple Sclerosis Unit, Neurology Department, Hospital Clínico S. Carlos, Madrid, Spain
- 8Neurogenomiks Group, Universidad del País Vasco (UPV/EHU), Leioa, Spain
- 9IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
- 10Servicio de Genética, Hospital de Basurto, Bilbao, Spain
- 11Servicio de Neurología, Hospital de Basurto, Bilbao, Spain
- 12Laboratorio de Investigación, Hospital Civil, Málaga, Spain
- 13Servicio de Neurología, Unidad de Esclerosis Múltiple, Hospital Donostia, San Sebastián, Spain
- 14Área de Neurociencias, Insti. Investigación Sanitaria Biodonostia, San Sebastián, Spain
- 15Neurology Service, Hospital Clinic and Institut d’Investigació Biomèdica Pi i Sunyer (IDIBAPS), Barcelona, Spain
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system with presumed autoimmune origin, triggered by genetic and environmental risk factors. A recent genome-wide association study conducted on MS identified new biallelic markers outside the HLA (human leucocyte antigen) region involved in disease susceptibility: rs1109670(DDEF2); rs1458175 (PDZRN4); rs1529316 and rs2049306 (CSMD1);rs16914086 (TBC1D2); rs1755289 (SH3GL2); rs1841770 (ZIC1); rs651477(EN1); rs7607490 (TRIB2); rs397020 (C20orf46); rs908821 (SLC25A36);rs7672826 (MGC45800) and rs9523762 (GPC5). We aimed at replicating these top association signals in a Spanish cohort of 2863 MS patients and 2930 sex- and age-matched controls. Only rs9523762 mapping in theGPC5 gene was significantly associated (G allele, P=1.6 × 10−5; odds ratio (95% confidence interval)=1.23 (1.12–1.36)), supporting a role for this proteoglycan in MS predisposition. The independent replication of association signals to validate data generated by genome-wide association scans is a first step in the effort to improve patient care.
Keywords:
multiple sclerosis; genetics; GWAS; GPC5
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