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Genome-Wide Associa...
Genome-Wide Association Study of Estradiol Levels and the Causal Effect of Estradiol on Bone Mineral Density
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- Schmitz, Daniel, 1995- (author)
- Uppsala universitet,Medicinsk genetik och genomik,Science for Life Laboratory, SciLifeLab,Åsa Johansson
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- Ek, Weronica E. (author)
- Uppsala universitet,Medicinsk genetik och genomik,Science for Life Laboratory, SciLifeLab
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- Berggren, Elin (author)
- Uppsala universitet,Institutionen för immunologi, genetik och patologi,Science for Life Laboratory, SciLifeLab
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- Höglund, Julia (author)
- Uppsala universitet,Medicinsk genetik och genomik,Science for Life Laboratory, SciLifeLab
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- Karlsson, Torgny (author)
- Uppsala universitet,Medicinsk genetik och genomik,Science for Life Laboratory, SciLifeLab
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- Johansson, Åsa (author)
- Uppsala universitet,Science for Life Laboratory, SciLifeLab,Medicinsk genetik och genomik
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(creator_code:org_t)
- 2021-07-13
- 2021
- English.
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In: Journal of Clinical Endocrinology and Metabolism. - : Endocrine Society. - 0021-972X .- 1945-7197. ; 106:11, s. e4471-e4486
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Abstract
Subject headings
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- ContextEstradiol is the primary female sex hormone and plays an important role for skeletal health in both sexes. Several enzymes are involved in estradiol metabolism, but few genome-wide association studies (GWAS) have been performed to characterize the genetic contribution to variation in estrogen levels.ObjectiveIdentify genetic loci affecting estradiol levels and estimate causal effect of estradiol on bone mineral density (BMD).DesignWe performed GWAS for estradiol in males (n = 147 690) and females (n = 163 985) from UK Biobank. Estradiol was analyzed as a binary phenotype above/below detection limit (175 pmol/L). We further estimated the causal effect of estradiol on BMD using Mendelian randomization.ResultsWe identified 14 independent loci associated (P < 5 × 10−8) with estradiol levels in males, of which 1 (CYP3A7) was genome-wide and 7 nominally (P < 0.05) significant in females. In addition, 1 female-specific locus was identified. Most loci contain functionally relevant genes that have not been discussed in relation to estradiol levels in previous GWAS (eg, SRD5A2, which encodes a steroid 5-alpha reductase that is involved in processing androgens, and UGT3A1 and UGT2B7, which encode enzymes likely to be involved in estradiol elimination). The allele that tags the O blood group at the ABO locus was associated with higher estradiol levels. We identified a causal effect of high estradiol levels on increased BMD in both males (P = 1.58 × 10−11) and females (P = 7.48 × 10−6).ConclusionOur findings further support the importance of the body’s own estrogen to maintain skeletal health in males and in females.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)
Keyword
- Bone mineral density
- Estrogen
- GWAS
- Mendelian Randomization
Publication and Content Type
- ref (subject category)
- art (subject category)
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