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BioMed Research International
Volume 2017 (2017), Article ID 5845849, 8 pages
Research Article

HIF1A (rs11549465) and AKNA (rs10817595) Gene Polymorphisms Are Associated with Primary Sjögren’s Syndrome

1Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
2Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
3Synovial Fluid Laboratory, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City, Mexico
4Biological and Health Sciences PhD Program, Universidad Autónoma Metropolitana Iztapalapa, Mexico City, Mexico

Correspondence should be addressed to Gabriela Angélica Martínez-Nava

Received 23 January 2017; Revised 6 March 2017; Accepted 23 March 2017; Published 6 April 2017

Academic Editor: Louise E. Glover

Copyright © 2017 Gabriela Hernández-Molina et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. To evaluate the allele and genotype frequencies of polymorphic sites of HIF1A and ANKA genes in primary Sjögren’s syndrome (pSS). Methods. We included 110 patients with pSS and 141 ethnically matched healthy controls. Three HIF1A gene polymorphisms (Pro582Ser, Ala588Thr, and C191T) and two AKNA gene polymorphisms (−1372C>A and Pro624Leu) were genotyped using TaqMan probes in a Real-Time PCR instrument. Associations between pSS and genotypes, alleles, and inheritance models of the SNPs of interest were evaluated by logistic regression adjusted by age and gender. Results. The genotype and the allele of the HIF1A Pro582Ser polymorphism protected against pSS (OR = 0.22; 95% CI = 0.09–0.52; ; OR = 0.26; 95% CI = 0.12–0.58; , resp.), whereas under a recessive model adjusted by age and gender, the AKNA −1372C>A polymorphism A/A genotype was associated with an increased risk of pSS (OR = 2.60; 95% CI = 1.11–6.12; ). Conclusions. We identified HIF1A Pro582Ser allele and genotype as well as AKNA −1372C>A polymorphism A/A genotype as genetic factors associated with pSS. Further studies in other populations are needed to validate our findings and research is warranted in order to shed some light on their functional implications across biological pathways in this disease.