Genetics of bone mineral density

Evidence for a major pleiotropic effect from an intercontinental study

Gregory Livshits, Hong Wen Deng, Tuan V. Nguyen, Konstantin Yakovenko, Robert R. Recker, John A. Eisman

Research output: Contribution to journalArticle

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Abstract

BMD is a primary predictor of osteoporotic fracture, and its genetic determination is still unclear. This study showed that the correlation between BMD at different skeletal sites is caused by an underlying genetic structure of common genetic effects. In addition to possible shared (pleiotropic) genetic and environmental effects, each of the BMD variables may also be determined by site-specific genetic factors. Introduction: BMD is a primary predictor of osteoporotic fracture and a key phenotype for the genetic study of osteoporosis. The interindividual variation in BMD measured at a given skeletal site is largely regulated by genetic factors. A strong phenotypic covariation exists for BMD at different skeletal sites. This study tests the hypothesis that the covariation is in fact caused by an underlying genetic structure of common genetic effects and that, in addition to possible shared (pleiotropic) genetic effects, each of the BMD variables may also be determined by site-specific genetic factors Materials and Methods: A bivariate complex segregation analysis as implemented in statistical package PAP was conducted to explore various models of pleiotropic genetic and environmental transmission in lumbar spine and femoral neck BMD, as well as in compact and spongious segments of hand phalanges. The BMD was obtained in three ethnically, culturally, and socially heterogeneous samples of white pedigrees, with 2549 individuals between 18 and 100 years of age, from Australia, Europe, and North America. Results and Conclusions: The genetic correlation between BMD measures ranged between 0.50 ± 0.09 and 0.79 ± 0.04 in the three samples. In each sample, the model incorporated a major locus pleiotropic effect, and residual correlation was found to be the most parsimonious model. Estimated parameters from the model indicated a significant pleiotropic major gene effect on both lumbar spine and femoral neck BMD, with the existence of a significant residual correlation (0.51 ± 0.07 to 0.66 ± 0.04). These results suggest that the covariation in BMD at different skeletal sites, and between mostly compact versus mostly trabecular bone, was largely determined by common genetic factors that are pleiotropic or in close linkage and linkage disequilibirum, while at the same time, exhibiting considerable evidence of shared environmental effects. The results, for the first time, suggest that the possibility of pleiotropic genetic effect may be controlled by a major genetic locus. Identification of the major locus could open new opportunity to understanding the liability and pathogenic processes in which they are involved in the determination of fracture risk.

Original languageEnglish
Pages (from-to)914-923
Number of pages10
JournalJournal of Bone and Mineral Research
Volume19
Issue number6
DOIs
StatePublished - Jun 2004

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Osteoporotic Fractures
Genetic Structures
Femur Neck
Bone Density
Spine
Genetic Pleiotropy
Genetic Loci
Genetic Models
Pedigree
North America
Osteoporosis
Hand
Phenotype
Genes
Cancellous Bone

All Science Journal Classification (ASJC) codes

  • Surgery

Cite this

Genetics of bone mineral density : Evidence for a major pleiotropic effect from an intercontinental study. / Livshits, Gregory; Deng, Hong Wen; Nguyen, Tuan V.; Yakovenko, Konstantin; Recker, Robert R.; Eisman, John A.

In: Journal of Bone and Mineral Research, Vol. 19, No. 6, 06.2004, p. 914-923.

Research output: Contribution to journalArticle

Livshits, Gregory ; Deng, Hong Wen ; Nguyen, Tuan V. ; Yakovenko, Konstantin ; Recker, Robert R. ; Eisman, John A. / Genetics of bone mineral density : Evidence for a major pleiotropic effect from an intercontinental study. In: Journal of Bone and Mineral Research. 2004 ; Vol. 19, No. 6. pp. 914-923.
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