@article {8538,
	title = {{Life-Course Genome-wide Association Study Meta-analysis of Total Body BMD and Assessment of Age-Specific Effects},
	journal = {Am J Hum Genet},
	volume = {102},
	year = {2018},
	month = {01},
	pages = {88{\textendash}102},
	abstract = {Bone mineral density (BMD) assessed by DXA is used to evaluate bone health. In children, total body (TB) measurements are commonly used; in older individuals, BMD at the lumbar spine (LS) and femoral neck (FN) is used to diagnose osteoporosis. To date, genetic variants in more than 60 loci have been identified as associated with BMD. To investigate the genetic determinants of TB-BMD variation along the life course and test for age-specific effects, we performed a meta-analysis of 30 genome-wide association studies (GWASs) of TB-BMD including 66,628 individuals overall and divided across five age strata, each spanning 15 years. We identified variants associated with TB-BMD at 80 loci, of which 36 have not been previously identified; overall, they explain approximately 10\% of the TB-BMD variance when combining all age groups and influence the risk of fracture. Pathway and enrichment analysis of the association signals showed clustering within gene sets implicated in the regulation of cell growth and SMAD proteins, overexpressed in the musculoskeletal system, and enriched in enhancer and promoter regions. These findings reveal TB-BMD as a relevant trait for genetic studies of osteoporosis, enabling the identification of variants and pathways influencing different bone compartments. Only variants in ESR1 and close proximity to RANKL showed a clear effect dependency on age. This most likely indicates that the majority of genetic variants identified influence BMD early in life and that their effect can be captured throughout the life course.},
	author = {Medina-Gomez, C. and Kemp, J. P. and Trajanoska, K. and Luan, J. and Chesi, A. and Ahluwalia, T. S. and Mook-Kanamori, D. O. and Ham, A. and Hartwig, F. P. and Evans, D. S. and Joro, R. and Nedeljkovic, I. and Zheng, H. F. and Zhu, K. and Atalay, M. and Liu, C. T. and Nethander, M. and Broer, L. and Porleifsson, G. and Mullin, B. H. and Handelman, S. K. and Nalls, M. A. and Jessen, L. E. and Heppe, D. H. M. and Richards, J. B. and Wang, C. and Chawes, B. and Schraut, K. E. and Amin, N. and Wareham, N. and Karasik, D. and Van der Velde, N. and Ikram, M. A. and Zemel, B. S. and Zhou, Y. and Carlsson, C. J. and Liu, Y. and McGuigan, F. E. and Boer, C. G. and B?nnelykke, K. and Ralston, S. H. and Robbins, J. A. and Walsh, J. P. and Zillikens, M. C. and Langenberg, C. and Li-Gao, R. and Williams, F. M. K. and Harris, T. B. and Akesson, K. and Jackson, R. D. and Sigurdsson, G. and den Heijer, M. and van der Eerden, B. C. J. and van de Peppel, J. and Spector, T. D. and Pennell, C. and Horta, B. L. and Felix, J. F. and Zhao, J. H. and Wilson, S. G. and de Mutsert, R. and Bisgaard, H. and Styrk?rsd?ttir, U. and Jaddoe, V. W. and Orwoll, E. and Lakka, T. A. and Scott, R. and Grant, S. F. A. and Lorentzon, M. and van Duijn, C. M. and Wilson, J. F. and Stefansson, K. and Psaty, B. M. and Kiel, D. P. and Ohlsson, C. and Ntzani, E. and van Wijnen, A. J. and Forgetta, V. and Ghanbari, M. and Logan, J. G. and Williams, G. R. and Bassett, J. H. D. and Croucher, P. I. and Evangelou, E. and Uitterlinden, A. G. and Ackert-Bicknell, C. L. and Tobias, J. H. and Evans, D. M. and Rivadeneira, F.}
}
@article {8660,
	title = {{Genome-wide meta-analysis of muscle weakness identifies 15 susceptibility loci in older men and women},
	journal = {Nat Commun},
	volume = {12},
	year = {2021},
	month = {01},
	pages = {654},
	abstract = {Low muscle strength is an important heritable indicator of poor health linked to morbidity and mortality in older people. In a genome-wide association study meta-analysis of 256,523 Europeans aged 60 years and over from 22 cohorts we identify 15 loci associated with muscle weakness (European Working Group on Sarcopenia in Older People definition: n = 48,596 cases, 18.9\% of total), including 12 loci not implicated in previous analyses of continuous measures of grip strength. Loci include genes reportedly involved in autoimmune disease (HLA-DQA1 p = 4 {\texttimes} 10-17), arthritis (GDF5 p = 4 {\texttimes} 10-13), cell cycle control and cancer protection, regulation of transcription, and others involved in the development and maintenance of the musculoskeletal system. Using Mendelian randomization we report possible overlapping causal pathways, including diabetes susceptibility, haematological parameters, and the immune system. We conclude that muscle weakness in older adults has distinct mechanisms from continuous strength, including several pathways considered to be hallmarks of ageing.},
	author = {Jones, G. and Trajanoska, K. and Santanasto, A. J. and Stringa, N. and Kuo, C. L. and Atkins, J. L. and Lewis, J. R. and Duong, T. and Hong, S. and Biggs, M. L. and Luan, J. and Sarnowski, C. and Lunetta, K. L. and Tanaka, T. and Wojczynski, M. K. and Cvejkus, R. and Nethander, M. and Ghasemi, S. and Yang, J. and Zillikens, M. C. and Walter, S. and Sicinski, K. and Kague, E. and Ackert-Bicknell, C. L. and Arking, D. E. and Windham, B. G. and Boerwinkle, E. and Grove, M. L. and Graff, M. and Spira, D. and Demuth, I. and Van der Velde, N. and de Groot, L. C. P. G. M. and Psaty, B. M. and Odden, M. C. and Fohner, A. E. and Langenberg, C. and Wareham, N. J. and Bandinelli, S. and van Schoor, N. M. and Huisman, M. and Tan, Q. and Zmuda, J. and Mellstr{\"o}m, D. and Karlsson, M. and Bennett, D. A. and Buchman, A. S. and De Jager, P. L. and Uitterlinden, A. G. and V{\"o}lker, U. and Kocher, T. and Teumer, A. and Rodrigu{\'e}z-Ma{\~n}as, L. and Garc{\'\i}a, F. J. and Carnicero, J. A. and Herd, P. and Bertram, L. and Ohlsson, C. and Murabito, J. M. and Melzer, D. and Kuchel, G. A. and Ferrucci, L. and Karasik, D. and Rivadeneira, F. and Kiel, D. P. and Pilling, L. C.}
}
