PMID- 24099750 OWN - NLM STAT- MEDLINE DCOM- 20150330 LR - 20220330 IS - 1477-0970 (Electronic) IS - 1352-4585 (Print) IS - 1352-4585 (Linking) VI - 20 IP - 6 DP - 2014 May TI - Oligoclonal bands and age at onset correlate with genetic risk score in multiple sclerosis. PG - 660-8 LID - 10.1177/1352458513506503 [doi] AB - BACKGROUND: Many genetic risk variants are now well established in multiple sclerosis (MS), but the impact on clinical phenotypes is unclear. OBJECTIVE: To investigate the impact of established MS genetic risk variants on MS phenotypes, in well-characterized MS cohorts. METHODS: Norwegian MS patients (n = 639) and healthy controls (n = 530) were successfully genotyped for 61 established MS-associated single nucleotide polymorphisms (SNPs). Data including and excluding Major Histocompatibility Complex (MHC) markers were summed to a MS Genetic Burden (MSGB) score. Study replication was performed in a cohort of white American MS patients (n = 1997) and controls (n = 708). RESULTS: The total human leukocyte antigen (HLA) and the non-HLA MSGB scores were significantly higher in MS patients than in controls, in both cohorts (P << 10(-22)). MS patients, with and without cerebrospinal fluid (CSF) oligoclonal bands (OCBs), had a higher MSGB score than the controls; the OCB-positive patients had a slightly higher MSGB than the OCB-negative patients. An early age at symptom onset (AAO) also correlated with a higher MSGB score, in both cohorts. CONCLUSION: The MSGB score was associated with specific clinical MS characteristics, such as OCBs and AAO. This study underlines the need for well-characterized, large cohorts of MS patients, and the usefulness of summarizing multiple genetic risk factors of modest effect size in genotype-phenotype analyses. FAU - Harbo, Hanne F AU - Harbo HF AD - Department of Neurology, Oslo University Hospital, Norway. FAU - Isobe, Noriko AU - Isobe N FAU - Berg-Hansen, Pal AU - Berg-Hansen P FAU - Bos, Steffan D AU - Bos SD FAU - Caillier, Stacy J AU - Caillier SJ FAU - Gustavsen, Marte W AU - Gustavsen MW FAU - Mero, Inger-Lise AU - Mero IL FAU - Celius, Elisabeth Gulowsen AU - Celius EG FAU - Hauser, Stephen L AU - Hauser SL FAU - Oksenberg, Jorge R AU - Oksenberg JR FAU - Gourraud, Pierre-Antoine AU - Gourraud PA LA - eng GR - R01 NS026799/NS/NINDS NIH HHS/United States GR - R01-NS26799/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20131007 PL - England TA - Mult Scler JT - Multiple sclerosis (Houndmills, Basingstoke, England) JID - 9509185 RN - 0 (Biomarkers) RN - 0 (Immunoglobulin G) RN - 0 (Oligoclonal Bands) SB - IM MH - Adult MH - Age of Onset MH - Biomarkers/cerebrospinal fluid MH - Female MH - Genetic Testing MH - Genetic Variation/genetics MH - Genotype MH - Humans MH - Immunoglobulin G/cerebrospinal fluid MH - Male MH - Middle Aged MH - Multiple Sclerosis/diagnosis/*epidemiology/*genetics MH - Oligoclonal Bands/*cerebrospinal fluid MH - Polymorphism, Single Nucleotide/genetics MH - Risk Factors PMC - PMC4066985 MID - NIHMS597972 OTO - NOTNLM OT - Age of onset OT - Multiple Sclerosis Genetic Burden OT - cerebrospinal fluid OT - genetic association OT - genetic risk OT - genotype OT - multiple sclerosis OT - oligoclonal bands EDAT- 2013/10/09 06:00 MHDA- 2015/03/31 06:00 PMCR- 2014/06/23 CRDT- 2013/10/09 06:00 PHST- 2013/10/09 06:00 [entrez] PHST- 2013/10/09 06:00 [pubmed] PHST- 2015/03/31 06:00 [medline] PHST- 2014/06/23 00:00 [pmc-release] AID - 1352458513506503 [pii] AID - 10.1177/1352458513506503 [doi] PST - ppublish SO - Mult Scler. 2014 May;20(6):660-8. doi: 10.1177/1352458513506503. Epub 2013 Oct 7.