Abstract
A genetic risk score (GRS) was developed for predicting fracture risk based on lifetime prevalence of femoral fractures in 924 consecutive autopsies of Japanese males. A total of 922 non-synonymous single nucleotide polymorphisms (SNPs) located in 62 osteoporosis susceptibility genes were genotyped and evaluated for their association with the prevalence of femoral fracture in autopsy cases. GRS values were calculated as the sum of risk allele counts (unweighted GRS) or the sum of weighted scores estimated from logistic regression coefficients (weighted GRS). Five SNPs (α-ʟ-iduronidase rs3755955, C7orf58 rs190543052, homeobox C4 rs75256744, G patch domain-containing gene 1 rs2287679, and Werner syndrome rs2230009) showed a significant association (P < 0.05) with the prevalence of femoral fracture in 924 male subjects. Both the unweighted and weighted GRS adequately predicted fracture prevalence; areas under receiver-operating characteristic curves were 0.750 [95 % confidence interval (CI) 0.660–0.840] and 0.770 (95 % CI 0.681–0.859), respectively. Multiple logistic regression analysis revealed that the odds ratio (OR) for the association between fracture prevalence and unweighted GRS ≥3 (n = 124) was 8.39 (95 % CI 4.22–16.69, P < 0.001) relative to a score <3 (n = 797). Likewise, the OR for a weighted GRS of 6–15 (n = 135) was 7.73 (95 % CI 3.89–15.36, P < 0.001) relative to scores of 0–5 (n = 786). The GRS based on risk allele profiles of the five SNPs could help identify at-risk individuals and enable implementation of preventive measures for femoral fracture.
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Acknowledgments
This work was supported by a grant from the Leading Project for Personalized Medicine of the Ministry of Education, Culture, Sports, Science and Technology of Japan (no. 09042037 to S.M.); Grants-in-Aid for Scientific Research (nos. 22240072, 21390459, and 21590411 to M.T. and 18209023, 18018021, 19659149, and 24590746 to Y.Y.); a Grant-in-Aid for the Global COE (Sport Sciences for the Promotion of Active Life to Waseda University) from the Ministry of Education, Culture, Sports, Science and Technology of Japan (to M.T.); Grants-in-Aid for Research on Intractable Diseases (Mitochondrial Disease) from the Ministry of Health, Labour and Welfare of Japan (H23-016, H23-119, and H24-005 to M.T.); grants for scientific research from Mitsui Sumitomo Insurance Welfare Foundation (to S.M.); the Pfizer Academic Contribution Fund (to S.M.); Takeda Science Foundation (to M.T.); the Smoking Research Foundation (to T.A. and M.S.); and the Mie Medical Valley Project (to Y.Y.).
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Heying Zhou, Seijiro Mori, Tatsuro Ishizaki, Masashi Tanaka, Kumpei Tanisawa, Makiko Naka Mieno, Motoji Sawabe, Tomio Arai, Masaaki Muramatsu, Yoshiji Yamada, and Hideki Ito declare that they have no conflicts of interest.
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Zhou, H., Mori, S., Ishizaki, T. et al. Genetic risk score based on the lifetime prevalence of femoral fracture in 924 consecutive autopsies of Japanese males. J Bone Miner Metab 34, 685–691 (2016). https://doi.org/10.1007/s00774-015-0718-7
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DOI: https://doi.org/10.1007/s00774-015-0718-7