A genome-wide association study identifies nucleotide variants at SIGLEC5 and DEFA1A3 as risk loci for periodontitis

Matthias Munz, Christina Willenborg, Gesa M. Richter, Yvonne Jockel-Schneider, Christian Graetz, Ingmar Staufenbiel, Jürgen Wellmann, Klaus Berger, Bastian Krone, Per Hoffmann, Nathalie van der Velde, André G. Uitterlinden, Lisette C.P.G.M. de Groot, Amr H. Sawalha, Haner Direskeneli, Güher Saruhan-Direskeneli, Esra Guzeldemir-Akcakanat, Gencay Keceli, Matthias Laudes, Barbara NoackAlexander Teumer, Birte Holtfreter, Thomas Kocher, Peter Eickholz, Jörg Meyle, Christof Doerfer, Corinna Bruckmann, Wolfgang Lieb, Andre Franke, Stefan Schreiber, Rahime M. Nohutcu, Jeanette Erdmann, Bruno G. Loos, Soeren Jepsen, Henrik Dommisch, Arne S. Schaefer*

*Korrespondierende/r Autor/-in für diese Arbeit

Abstract

Periodontitis is one of the most common inflammatory diseases, with a prevalence of 11% worldwide for the severe forms and an estimated heritability of 50%. The disease is characterized by destruction of the alveolar bone due to an aberrant host inflammatory response to a dysbiotic oral microbiome. Previous genome-wide association studies (GWAS) have reported several suggestive susceptibility loci. Here, we conducted a GWAS using a German and Dutch case-control sample of aggressive periodontitis (AgP, 896 cases, 7,104 controls), a rare but highly severe and early-onset form of periodontitis, validated the associations in a German sample of severe forms of the more moderate phenotype chronic periodontitis (CP) (993 cases, 1,419 controls). Positive findings were replicated in a Turkish sample of AgP (223 cases, 564 controls). A locus at SIGLEC5 (sialic acid binding Ig-like lectin 5) and a chromosomal region downstream of the DEFA1A3 locus (defensin alpha 1-3) showed association with both disease phenotypes and were associated with periodontitis at a genome-wide significance level in the pooled samples, with P = 1.09E-08 (rs4284742,-G; OR = 1.34, 95% CI = 1.21-1.48) and P = 5.48E-10 (rs2738058,-T; OR = 1.28, 95% CI = 1.18-1.38), respectively. SIGLEC5 is expressed in various myeloid immune cells and classified as an inhibitory receptor with the potential to mediate tyrosine phosphatases SHP-1/-2 dependent signaling. Alpha defensins are antimicrobial peptides with expression in neutrophils and mucosal surfaces and a role in phagocyte-mediated host defense. This study identifies the first shared genetic risk loci of AgP and CP with genome-wide significance and highlights the role of innate and adaptive immunity in the etiology of periodontitis.
OriginalspracheEnglisch
ZeitschriftHuman Molecular Genetics
Jahrgang26
Ausgabenummer13
Seiten (von - bis)2577-2588
Seitenumfang12
ISSN0964-6906
DOIs
PublikationsstatusVeröffentlicht - 01.01.2017

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