PMID- 26367070 OWN - NLM STAT- MEDLINE DCOM- 20160921 LR - 20211203 IS - 1872-6968 (Electronic) IS - 0303-8467 (Linking) VI - 138 DP - 2015 Nov TI - Presence of the HLADR13 allele among Mexican Mestizos suggests a protective factor against relapsing-remitting multiple sclerosis (RRMS). PG - 184-7 LID - S0303-8467(15)00292-9 [pii] LID - 10.1016/j.clineuro.2015.08.016 [doi] AB - BACKGROUND AND OBJECTIVE: Multiple sclerosis (MS) is a chronic demyelinating disease that affects the central nervous system. Researchers have looked for an association between relapsing-remitting MS (RRMS) and human leukocyte antigen (HLA) as risk or protective factor associated to ethnicity, which may add a partial explanation to disease heterogeneity and geographical variations. We described the frequency of the HLA-DR alleles in Mexican Mestizo (RRMS) patients. PATIENTS AND METHODS: We included 143 RRMS patients and 377 healthy controls, both Mexican Mestizos. Previous signing informed consent, we record demographic and clinical characteristics of the participants. Genetic profile was made, and HLA frequencies in both groups were compared. RESULTS: RRMS patients were 39.8% male and 60.2% female, mean age was 35 years. While, controls were 48%male and 52% women, mean age was 38 years. The most frequent allele found in subjects with RRMS was DR 15 (p=0.006, OR=2.2, 95% CI: 1.3-3.6). DR 13 allele was more frequent among healthy subjects than RRMS patients (p=0.050) with a protective OR 2.6, (95% CI: 1.3-5.2, p=0.050). CONCLUSION: In our study we found HLA DR 13 was more frequent in healthy controls than in RRMS patients, suggesting a protective factor among Mexican Mestizo population. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Flores, Jose AU - Flores J AD - Laboratory of Clinical Neurodegenerative Diseases, National Institute of Neurology and Neurosurgery of Mexico, Insurgentes Sur # 3877, CP 14269 Mexico City, Mexico. FAU - Granados, Julio AU - Granados J AD - Genetics and Neuroimmunology Laboratory, National Institute of Medical Sciences and Nutrition, Periferico Sur # 4809, CP 14610 Mexico City, Mexico. Electronic address: julgrate@yahoo.com. FAU - Alonso, E AU - Alonso E AD - Genetics Laboratory, National Institute of Neurology and Neurosurgery of Mexico, Insurgentes Sur # 3877, CP 14269 Mexico City, Mexico. FAU - Rito, Yamel AU - Rito Y AD - Laboratory of Clinical Neurodegenerative Diseases, National Institute of Neurology and Neurosurgery of Mexico, Insurgentes Sur # 3877, CP 14269 Mexico City, Mexico. FAU - Ortega-Hernandez, Esteban AU - Ortega-Hernandez E AD - Genetics and Neuroimmunology Laboratory, National Institute of Medical Sciences and Nutrition, Periferico Sur # 4809, CP 14610 Mexico City, Mexico. FAU - Mena-Hernandez, Lourdes AU - Mena-Hernandez L AD - Genetics and Neuroimmunology Laboratory, National Institute of Medical Sciences and Nutrition, Periferico Sur # 4809, CP 14610 Mexico City, Mexico. FAU - Corona, Teresa AU - Corona T AD - Laboratory of Clinical Neurodegenerative Diseases, National Institute of Neurology and Neurosurgery of Mexico, Insurgentes Sur # 3877, CP 14269 Mexico City, Mexico. Electronic address: coronav@servidorunam.mx. LA - eng PT - Journal Article DEP - 20150831 PL - Netherlands TA - Clin Neurol Neurosurg JT - Clinical neurology and neurosurgery JID - 7502039 RN - 0 (HLA-DR Serological Subtypes) RN - 0 (HLA-DR13 antigen) SB - IM MH - Adult MH - Alleles MH - Ethnicity/genetics MH - Female MH - *Genetic Predisposition to Disease MH - Genotype MH - HLA-DR Serological Subtypes/genetics MH - Humans MH - Male MH - Mexico MH - Middle Aged MH - Multiple Sclerosis, Relapsing-Remitting/ethnology/*genetics MH - *Protective Factors OTO - NOTNLM OT - Alleles OT - HLA-DR OT - Mexican Mestizos OT - Multiple sclerosis relapsing-remitting OT - Protective factors EDAT- 2015/09/15 06:00 MHDA- 2016/09/23 06:00 CRDT- 2015/09/15 06:00 PHST- 2015/02/19 00:00 [received] PHST- 2015/07/22 00:00 [revised] PHST- 2015/08/18 00:00 [accepted] PHST- 2015/09/15 06:00 [entrez] PHST- 2015/09/15 06:00 [pubmed] PHST- 2016/09/23 06:00 [medline] AID - S0303-8467(15)00292-9 [pii] AID - 10.1016/j.clineuro.2015.08.016 [doi] PST - ppublish SO - Clin Neurol Neurosurg. 2015 Nov;138:184-7. doi: 10.1016/j.clineuro.2015.08.016. Epub 2015 Aug 31.