Value of rare low bone mass diseases for osteoporosis genetics
- 6 January 2016
- journal article
- review article
- Published by Portico in BoneKEy Reports
- Vol. 5, 773
- https://doi.org/10.1038/bonekey.2015.143
Abstract
Osteoporosis presents as increased susceptibility to fractures due to bone loss and compromised bone microstructure. Osteoporosis mainly affects the elderly population, but it is increasingly recognized that compromised bone health with low bone mass and increased fractures may have its onset already in childhood. In such cases, genetic component is likely to contribute more than lifestyle factors to disease onset. During the last decade, our understanding of the genetic determinants of osteoporosis has significantly increased through family studies, candidate gene studies and genome-wide association studies (GWASs). GWASs have led to identification of several genetic loci associated with osteoporosis. A valuable contribution to the research field has been made through studies involving families with childhood-onset rare bone diseases such as osteogenesis imperfecta, osteoporosis-pseudoglioma syndrome and various other skeletal dysplasias with reduced bone mass. Some genes involved in rare low bone mass diseases, such as LRP5 and WNT1, participate in the Wnt/beta-catenin pathway, and their discovery has underscored the importance of this pathway for normal skeletal health. The still continuing discovery of gene defects underlying various low bone mass phenotypes contributes to our understanding of normal bone metabolism and enables development of new therapies for osteoporosis.Keywords
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