TY - JOUR
T1 - Novel Genetic Variants Associated With Increased Vertebral Volumetric BMD, Reduced Vertebral Fracture Risk, and Increased Expression of SLC1A3 and EPHB2
AU - Nielson, Carrie M.
AU - Liu, Ching Ti
AU - Smith, Albert V.
AU - Ackert-Bicknell, Cheryl L.
AU - Reppe, Sjur
AU - Jakobsdottir, Johanna
AU - Wassel, Christina
AU - Register, Thomas C.
AU - Oei, Ling
AU - Alonso, Nerea
AU - Oei, Edwin H.
AU - Parimi, Neeta
AU - Samelson, Elizabeth J.
AU - Nalls, Mike A.
AU - Zmuda, Joseph
AU - Lang, Thomas
AU - Bouxsein, Mary
AU - Latourelle, Jeanne
AU - Claussnitzer, Melina
AU - Siggeirsdottir, Kristin
AU - Srikanth, Priya
AU - Lorentzen, Erik
AU - Vandenput, Liesbeth
AU - Langefeld, Carl
AU - Raffield, Laura
AU - Terry, Greg
AU - Cox, Amanda J.
AU - Allison, Matthew A.
AU - Criqui, Michael H.
AU - Bowden, Don
AU - Ikram, M. Arfan
AU - Mellström, Dan
AU - Karlsson, Magnus K.
AU - Carr, John
AU - Budoff, Matthew
AU - Phillips, Caroline
AU - Cupples, L. Adrienne
AU - Chou, Wen Chi
AU - Myers, Richard H.
AU - Ralston, Stuart H.
AU - Gautvik, Kaare M.
AU - Cawthon, Peggy M.
AU - Cummings, Steven
AU - Karasik, David
AU - Rivadeneira, Fernando
AU - Gudnason, Vilmundur
AU - Orwoll, Eric S.
AU - Harris, Tamara B.
AU - Ohlsson, Claes
AU - Kiel, Douglas P.
AU - Hsu, Yi Hsiang
N1 - Publisher Copyright:
© 2016 American Society for Bone and Mineral Research
PY - 2016/12/1
Y1 - 2016/12/1
N2 - Genome-wide association studies (GWASs) have revealed numerous loci for areal bone mineral density (aBMD). We completed the first GWAS meta-analysis (n = 15,275) of lumbar spine volumetric BMD (vBMD) measured by quantitative computed tomography (QCT), allowing for examination of the trabecular bone compartment. SNPs that were significantly associated with vBMD were also examined in two GWAS meta-analyses to determine associations with morphometric vertebral fracture (n = 21,701) and clinical vertebral fracture (n = 5893). Expression quantitative trait locus (eQTL) analyses of iliac crest biopsies were performed in 84 postmenopausal women, and murine osteoblast expression of genes implicated by eQTL or by proximity to vBMD-associated SNPs was examined. We identified significant vBMD associations with five loci, including: 1p36.12, containing WNT4 and ZBTB40; 8q24, containing TNFRSF11B; and 13q14, containing AKAP11 and TNFSF11. Two loci (5p13 and 1p36.12) also contained associations with radiographic and clinical vertebral fracture, respectively. In 5p13, rs2468531 (minor allele frequency [MAF] = 3%) was associated with higher vBMD (β = 0.22, p = 1.9 × 10–8) and decreased risk of radiographic vertebral fracture (odds ratio [OR] = 0.75; false discovery rate [FDR] p = 0.01). In 1p36.12, rs12742784 (MAF = 21%) was associated with higher vBMD (β = 0.09, p = 1.2 × 10–10) and decreased risk of clinical vertebral fracture (OR = 0.82; FDR p = 7.4 × 10–4). Both SNPs are noncoding and were associated with increased mRNA expression levels in human bone biopsies: rs2468531 with SLC1A3 (β = 0.28, FDR p = 0.01, involved in glutamate signaling and osteogenic response to mechanical loading) and rs12742784 with EPHB2 (β = 0.12, FDR p = 1.7 × 10–3, functions in bone-related ephrin signaling). Both genes are expressed in murine osteoblasts. This is the first study to link SLC1A3 and EPHB2 to clinically relevant vertebral osteoporosis phenotypes. These results may help elucidate vertebral bone biology and novel approaches to reducing vertebral fracture incidence.
AB - Genome-wide association studies (GWASs) have revealed numerous loci for areal bone mineral density (aBMD). We completed the first GWAS meta-analysis (n = 15,275) of lumbar spine volumetric BMD (vBMD) measured by quantitative computed tomography (QCT), allowing for examination of the trabecular bone compartment. SNPs that were significantly associated with vBMD were also examined in two GWAS meta-analyses to determine associations with morphometric vertebral fracture (n = 21,701) and clinical vertebral fracture (n = 5893). Expression quantitative trait locus (eQTL) analyses of iliac crest biopsies were performed in 84 postmenopausal women, and murine osteoblast expression of genes implicated by eQTL or by proximity to vBMD-associated SNPs was examined. We identified significant vBMD associations with five loci, including: 1p36.12, containing WNT4 and ZBTB40; 8q24, containing TNFRSF11B; and 13q14, containing AKAP11 and TNFSF11. Two loci (5p13 and 1p36.12) also contained associations with radiographic and clinical vertebral fracture, respectively. In 5p13, rs2468531 (minor allele frequency [MAF] = 3%) was associated with higher vBMD (β = 0.22, p = 1.9 × 10–8) and decreased risk of radiographic vertebral fracture (odds ratio [OR] = 0.75; false discovery rate [FDR] p = 0.01). In 1p36.12, rs12742784 (MAF = 21%) was associated with higher vBMD (β = 0.09, p = 1.2 × 10–10) and decreased risk of clinical vertebral fracture (OR = 0.82; FDR p = 7.4 × 10–4). Both SNPs are noncoding and were associated with increased mRNA expression levels in human bone biopsies: rs2468531 with SLC1A3 (β = 0.28, FDR p = 0.01, involved in glutamate signaling and osteogenic response to mechanical loading) and rs12742784 with EPHB2 (β = 0.12, FDR p = 1.7 × 10–3, functions in bone-related ephrin signaling). Both genes are expressed in murine osteoblasts. This is the first study to link SLC1A3 and EPHB2 to clinically relevant vertebral osteoporosis phenotypes. These results may help elucidate vertebral bone biology and novel approaches to reducing vertebral fracture incidence.
KW - ANALYSIS/QUANTITATION OF BONE
KW - BONE QCT/μCT
KW - DISEASES AND DISORDERS OF/RELATED TO BONE
KW - EPIDEMIOLOGY, HUMAN ASSOCIATION STUDIES
KW - FRACTURE RISK ASSESSMENT
KW - GENERAL POPULATION STUDIES
KW - GENETIC RESEARCH
KW - OSTEOPOROSIS
UR - http://www.scopus.com/inward/record.url?scp=84992603238&partnerID=8YFLogxK
U2 - 10.1002/jbmr.2913
DO - 10.1002/jbmr.2913
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
C2 - 27476799
AN - SCOPUS:84992603238
SN - 0884-0431
VL - 31
SP - 2085
EP - 2097
JO - Journal of Bone and Mineral Research
JF - Journal of Bone and Mineral Research
IS - 12
ER -