Open Access

Genome-wide association scans for idiopathic osteonecrosis of the femoral head in a Korean population

  • Authors:
    • Seung‑Hoon Baek
    • Kang‑Il Kim
    • Kyung‑Sik Yoon
    • Tae‑Ho Kim
    • Shin‑Yoon Kim
  • View Affiliations

  • Published online on: December 14, 2016     https://doi.org/10.3892/mmr.2016.6036
  • Pages: 750-758
  • Copyright: © Baek et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Osteonecrosis of the femoral head (ONFH) is a multifactorial disease and is associated with genetic predisposition, and exposure to certain risk factors. In particular, idiopathic ONFH in twins and the clustering of cases in families have indicated that genetic factors are involved. However, the majority of cases of ONFH are sporadic and various studies have demonstrated that differences in the study design and/or the ethnic groups analyzed leads to different results. The present study performed one of the first genome‑wide association studies to identify genetic loci that may increase the risk of idiopathic ONFH. In total, 217 patients with idiopathic ONFH and 217 control samples, without ONFH, were genotyped using Axiom™ chips. Following quality control, 509,886 single‑nucleotide polymorphisms (SNPs) were included in the association analysis to identify genetic variants that may influence susceptibility to idiopathic ONFH. The lowest P‑value identified by the current study was for an association with rs220324 (P=3.57x10‑7), an SNP that is located near to the uromodulin‑like 1 gene region on chromosome 21q22.3, although none of the SNPs reached the traditional genome‑wide significance level of 5x10‑8. However, the DnaJ heat shock protein family (Hsp40) member C6 (DNAJC6) locus, a region between 65.37 and 65.67 Mb located on chromosome 1p31.3, harbored a cluster of SNPs that were associated with idiopathic ONFH at a significance level of P<1x10‑5. Four variants, rs10493374, rs12032616, rs17127529 and rs6679032, with marginal associations were located in and around the DNAJC6 locus and were in strong linkage disequilibrium with each other. In conclusion, the current study did not identify any SNPs that were associated with idiopathic ONFH at a genome‑wide significance level, however, the results suggest that future studies should investigate the effects of SNPs in the DNAJC6 gene on the idiopathic ONFH risk.
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February-2017
Volume 15 Issue 2

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Baek SH, Kim KI, Yoon KS, Kim TH and Kim SY: Genome-wide association scans for idiopathic osteonecrosis of the femoral head in a Korean population. Mol Med Rep 15: 750-758, 2017
APA
Baek, S., Kim, K., Yoon, K., Kim, T., & Kim, S. (2017). Genome-wide association scans for idiopathic osteonecrosis of the femoral head in a Korean population. Molecular Medicine Reports, 15, 750-758. https://doi.org/10.3892/mmr.2016.6036
MLA
Baek, S., Kim, K., Yoon, K., Kim, T., Kim, S."Genome-wide association scans for idiopathic osteonecrosis of the femoral head in a Korean population". Molecular Medicine Reports 15.2 (2017): 750-758.
Chicago
Baek, S., Kim, K., Yoon, K., Kim, T., Kim, S."Genome-wide association scans for idiopathic osteonecrosis of the femoral head in a Korean population". Molecular Medicine Reports 15, no. 2 (2017): 750-758. https://doi.org/10.3892/mmr.2016.6036