Influence of the LILRA3 deletion on multiple sclerosis risk: Original data and meta-analysis

Miguel A. Ortiz, Concepción Núñez, David Ordóñez, José C. Alvarez-Cermeño, José E. Martínez-Rodriguez, Antonio J. Sánchez, Rafael Arroyo, Guillermo Izquierdo, Sunny Malhotra, Xavier Montalban, Antonio García-Merino, Elvira Munteis, Antonio Alcina, Manuel Comabella, Fuencisla Matesanz, Luisa M. Villar, Elena Urcelay

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5 Citations (Scopus)


© 2015 Ortiz et al. Background Multiple sclerosis (MS) is a neurodegenerative, autoimmune disease of the central nervous system. Genome-wide association studies (GWAS) have identified over hundred polymorphisms with modest individual effects in MS susceptibility and they have confirmed the main individual effect of the Major Histocompatibility Complex. Additional risk loci with immunologically relevant genes were found significantly overrepresented. Nonetheless, it is accepted that most of the genetic architecture underlying susceptibility to the disease remains to be defined. Candidate association studies of the leukocyte immunoglobulin-like receptor LILRA3 gene in MS have been repeatedly reported with inconsistent results. Objectives In an attempt to shed some light on these controversial findings, a combined analysis was performed including the previously published datasets and three newly genotyped cohorts. Both wild-type and deleted LILRA3 alleles were discriminated in a single-tube PCR amplification and the resulting products were visualized by their different electrophoretic mobilities. Results and Conclusion Overall, this meta-analysis involved 3200 MS patients and 3069 matched healthy controls and it did not evidence significant association of the LILRA3 deletion [carriers of LILRA3 deletion: p = 0.25, OR (95% CI) = 1.07 (0.95-1.19)], even after stratification by gender and the HLA-DRB1∗15:01 risk allele.
Original languageEnglish
Article numbere0134414
JournalPLoS ONE
Issue number8
Publication statusPublished - 14 Aug 2015


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