Genetic Variant in ACVR2B Is Associated with Lean Mass

Yann C Klimentidis, Jennifer W Bea, Patricia Thompson, Walter Klimecki, Chengcheng Hu, Guanglin Wu, Skye Nicholas, Kelli K. Ryckman, Zhao Chen

Research output: Contribution to journalArticle

Abstract

INTRODUCTION: Low lean mass (LM) is a risk factor for chronic disease, a major cause of disability and diminished quality of life, and is a heritable trait. However, relatively few specific genetic factors have been identified as potentially influencing this trait. METHODS: In this study, we selected 1,493 single-nucleotide polymorphisms (SNPs) in 155 candidate genes involved in anabolic, catabolic, growth hormone, and other related pathways, and examined their association with LM, assessed by dual energy x-ray absorptiometry, in a sample of 2,760 non-Hispanic and Hispanic White postmenopausal women from the Women’s Health Initiative (WHI) Observational Study. We assessed replication of our top findings in a meta-analysis of twenty genome-wide association studies (n=38,292) conducted by the CHARGE Consortium Musculoskeletal Working Group. RESULTS: We identified 32 SNPs that had significant associations with LM in the WHI cohort. In the replication stage, we find that SNP rs2276541 in the activin A receptor, type IIB (ACVR2B) was significantly associated with LM (β=0.15; p=2.17 x 10). ACVR2B codes for a receptor for a negative regulator of skeletal muscle, mysostatin, and has previously been identified in a candidate gene study as a determinant of skeletal muscle mass. CONCLUSIONS: Our findings support a previously proposed role of ACVR2B allelic variation as a determinant of muscle mass and extend prior findings in men to women. Additional large-scale studies will be needed to confirm our findings in different populations.

Original languageEnglish (US)
JournalMedicine and Science in Sports and Exercise
DOIs
StateAccepted/In press - Feb 5 2016

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Single Nucleotide Polymorphism
Women's Health
Skeletal Muscle
Genome-Wide Association Study
Hispanic Americans
Growth Hormone
Genes
Observational Studies
Meta-Analysis
Chronic Disease
Quality of Life
X-Rays
Muscles
Population
activin receptor type II-B

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Genetic Variant in ACVR2B Is Associated with Lean Mass. / Klimentidis, Yann C; Bea, Jennifer W; Thompson, Patricia; Klimecki, Walter; Hu, Chengcheng; Wu, Guanglin; Nicholas, Skye; Ryckman, Kelli K.; Chen, Zhao.

In: Medicine and Science in Sports and Exercise, 05.02.2016.

Research output: Contribution to journalArticle

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