Osteoporosis, bone & mineral

Causal relationship between type 2 diabetes mellitus and bone mineral density: a Mendelian randomization study in an East Asian population

Osteoporos IntPublished Mendelian randomisation study

Main finding · Osteoporosis risk (IVW, main analysis)Result — go to the resultOdds ratio 0.92 95% CI 0.86–0.99

Authors' conclusion

T2DM is not associated with reduction in BMD in terms of genetic polymorphism in East Asian populations.

Study context

Population
East Asian populations: BioBank Japan GWAS summary data (T2DM, osteoporosis) and heel bone mineral density (BMD) GWAS data from ieu open gwas projectT2DM: 36,614 cases, 155,150 controls
Comparison
Genetically predicted T2DM and osteoporosis risk and heel BMD
Outcome
Osteoporosis risk; heel BMD (second outcome)
Methodological detailstwo-sample, GWAS summary data, inverse variance-weighted analysis, MR-Egger and weighted median, sensitivity analyses (Cochran's Q test, MR-Egger regression, leave-one-out)
  • Two-sample
  • GWAS summary data
  • Inverse variance-weighted analysis
  • MR-Egger and weighted median
  • Sensitivity analyses (Cochran's Q test, MR-Egger regression, leave-one-out)

Main finding

Osteoporosis risk (IVW, main analysis)

Odds ratio

0.92

95% CI 0.86–0.99

P = 0.016

T2DM
OR 0.92 (95% CI 0.86–0.99); P = 0.016

As reported in the abstract

Further findings

Heel BMD (higher BMD, inverse variance-weighted (IVW))

OR (95% CI)P value
T2DMIVW1.25 (1.06–1.46)P = 6.49 × 10-3

Original publication

Causal relationship between type 2 diabetes mellitus and bone mineral density: a Mendelian randomization study in an East Asian population. Osteoporos Int. Published 12 June 2023. doi:10.1007/s00198-023-06807-6

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