Assessment of gene-by-sex interaction effect on bone mineral density

CT Liu, Karol Estrada Gil, LM Yerges-Armstrong, Najaf Amin, E Evangelou, G (Guo) Li, RL Minster, MA Carless, CM Kammerer, Ling Oei - Oei, YH Zhou, N Alonso, Z Dailiana, J Eriksson, N Garcia-Giralt, S Giroux, LB Husted, RI Khusainova, T Koromila, AW KungJR Lewis, L Masi, S Mencej-Bedrac, X Nogues, MS Patel, J Prezelj, JB Richards, PC Sham, T Spector, L Vandenput, SM Xiao, HF Zheng, K Zhu, S Balcells, ML Brandi, M Frost, D Goltzman, J Gonzalez-Macias, M Karlsson, EK Khusnutdinova, P Kollia, BL Langdahl, O Ljunggren, M Lorentzon, J Marc, D Mellstroem, C Ohlsson, JM Olmos, SH Ralston, JA Riancho, F Rousseau, R Urreizti, W van Hul, MT Zarrabeitia, M Castano-Betancourt, S Demissie, E Grundberg, L Herrera, T Kwan, C Medina-Gomez, T Pastinen, G Sigurdsson, G Thorleifsson, JBJ VanMeurs, J Blangero, Bert Hofman, YM Liu, BD Mitchell, JR O'Connell, Ben Oostra, JI Rotter, K Stefansson, EA Streeten, U Styrkarsdottir, U Thorsteinsdottir, FA Tylavsky, André Uitterlinden, JA Cauley, TB Harris, JPA Ioannidis, BM Psaty, JA Robbins, M.C. Zillikens, CM VanDuijn, RL Prince, D Karasik, Fernando Rivadeneira, DP Kiel, LA Cupples, YH Hsu

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Abstract

Sexual dimorphism in various bone phenotypes, including bone mineral density (BMD), is widely observed; however, the extent to which genes explain these sex differences is unclear. To identify variants with different effects by sex, we examined gene-by-sex autosomal interactions genome-wide, and performed expression quantitative trait loci (eQTL) analysis and bioinformatics network analysis. We conducted an autosomal genome-wide meta-analysis of gene-by-sex interaction on lumbar spine (LS) and femoral neck (FN) BMD in 25,353 individuals from 8 cohorts. In a second stage, we followed up the 12 top single-nucleotide polymorphisms (SNPs; p?<?1?X?10-5) in an additional set of 24,763 individuals. Gene-by-sex interaction and sex-specific effects were examined in these 12 SNPs. We detected one novel genome-wide significant interaction associated with LS-BMD at the Chr3p26.1-p25.1 locus, near the GRM7 gene (male effect?=?0.02 and p?=?3.0?X?10-5; female effect?=?-0.007 and p?=?3.3?X?10-2), and 11 suggestive loci associated with either FN- or LS-BMD in discovery cohorts. However, there was no evidence for genome-wide significant (p?<?5?X?10-8) gene-by-sex interaction in the joint analysis of discovery and replication cohorts. Despite the large collaborative effort, no genome-wide significant evidence for gene-by-sex interaction was found to influence BMD variation in this screen of autosomal markers. If they exist, gene-by-sex interactions for BMD probably have weak effects, accounting for less than 0.08% of the variation in these traits per implicated SNP. (c) 2012 American Society for Bone and Mineral Research.
Original languageUndefined/Unknown
Pages (from-to)2051-2064
Number of pages14
JournalJournal of Bone and Mineral Research
Volume27
Issue number10
DOIs
Publication statusPublished - 2012

Research programs

  • EMC MGC-02-96-01
  • EMC MM-01-39-02
  • EMC MM-01-39-09-A
  • EMC NIHES-01-64-01

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