Evidence map›Paper›PMID 31650181›Full record

Observational studyThe Journal of clinical endocrinology and metabolism2020

Association of Genetic Variants Related to Serum Calcium Levels with Reduced Bone Mineral Density.

Gloria Hoi-Yee Li, Cassianne Robinson-Cohen, Shivani Sahni, Philip Chun-Ming Au, Kathryn Choon-Beng Tan, Annie Wai-Chee Kung, Ching-Lung Cheung

Open access · bronzeAbstract readObservational Study
In one paragraph

Observational study in The Journal of clinical endocrinology and metabolism, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.9field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 37 citations in OpenAlex.

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  13. Vitamin D and COVID-19: causal factor or bystander?Postgraduate medical journal · 2021
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

Gloria Hoi-Yee LiDepartment of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Hong Kong.
Cassianne Robinson-CohenDivision of Nephrology and Hypertension, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.
Shivani SahniMarcus Institute, Hebrew SeniorLife, Harvard Medical School, Boston, Massachusetts.
Philip Chun-Ming AuDepartment of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Hong Kong.
Kathryn Choon-Beng TanDepartment of Medicine, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Hong Kong.
Annie Wai-Chee KungDepartment of Medicine, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Hong Kong.
Ching-Lung CheungDepartment of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Hong Kong.
University of Hong Kong · HKHarvard University · USVanderbilt University Medical Center · US

Funding

Investigating causality between abnormalities of mineral metabolism and kidney, cardiovascular and bone diseaseR01DK122075 · NIDDK · VANDERBILT UNIVERSITY MEDICAL CENTER · PI ROBINSON-COHEN, CASSIANNE · 2019 to 2023
$1.9M
NIDDK NIH HHS R01 DK122075
6 · The paper itself

Abstract

contextThe role of serum calcium in bone metabolism is unknown, even though calcium/vitamin D supplementations have been widely used and are expected to improve bone health. We aim to determine the independent role of serum calcium in bone mineral density (BMD). DESIGN AND

settingTwo epidemiological analyses with 5478 and 5556 participants from the National Health and Nutrition Examination Survey (NHANES) 2003 to 2006 and the Hong Kong Osteoporosis Study (HKOS) to evaluate the cross-sectional association of serum calcium with BMD. Two-sample Mendelian randomization (MR) studies using genetic variations as instrumental variables to infer causality. Summary statistics of genome-wide association study of serum calcium (N = 39 400) and lifelong whole-body BMD (N = 66 628) were used.

main outcome measureBMD measured by dual-energy X-ray absorptiometry.

resultsIn NHANES 2003-6 and HKOS, each standard deviation (SD) increase in serum calcium was significantly associated with 0.036-0.092 SD decrease in BMD at various sites (all P < .05). In multivariable inverse-variance weighted MR analysis, genetic predisposition to higher serum calcium level was inversely associated with whole-body BMD after adjustment for serum parathyroid hormone, vitamin D, and phosphate (-0.431 SD per SD increase in serum calcium; 95% CI: -0.773 to -0.089, P = .014). Similar estimates were obtained in sensitivity analyses.

conclusionsOur study reveals that genetic predisposition to higher serum calcium level per se may have a negative impact on bone metabolism. Whether increased serum calcium caused by calcium/vitamin D supplementations would have the same negative effect on bone remains unknown, which warrants further investigation. In addition to other adverse clinical outcomes, careful use of high-dose supplementations is required.

Indexed as

Bone DensityAdultAgedCalciumCross-Sectional StudiesFemaleGenetic Predisposition to DiseaseGenetic VariationHumansMaleMendelian Randomization AnalysisMiddle AgedParathyroid HormonePolymorphism, Single NucleotideCalciumParathyroid Hormone

Identifiers

PMID31650181
PMCPMC7453037
OpenAlexW2982147922

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.