4.7 Article

Identification of 4 New Loci Associated With Primary Hyperparathyroidism (PHPT) and a Polygenic Risk Score for PHPT

Journal

JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM
Volume 107, Issue 12, Pages 3302-3308

Publisher

ENDOCRINE SOC
DOI: 10.1210/clinem/dgac527

Keywords

primary hyperparathyroidism; genetics; genome-wide association study; polygenic risk score

Funding

  1. NHS Tayside Research Endowments
  2. National Institute for Health Research using Official Development Assistance (ODA) funding [INSPIRED 16/136/102]

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This study investigates the genetic associations with primary hyperparathyroidism (PHPT) using both a genome-wide association study (GWAS) and candidate gene approaches. The results suggest that genetic variants at SOX9, SLITRK5, LPAR3, and BCDIN3D-AS1 are associated with an increased risk of PHPT. Furthermore, carriers of more PHPT-risk alleles, both male and female, have a significantly higher risk of developing PHPT.
Context A hypothesis-free genetic association analysis has not been reported for patients with primary hyperparathyroidism (PHPT). Objective We aimed to investigate genetic associations with PHPT using both genome-wide association study (GWAS) and candidate gene approaches. Methods A cross-sectional study was conducted among patients of European White ethnicity recruited in Tayside (Scotland, UK). Electronic medical records were used to identify PHPT cases and controls, and linked to genetic biobank data. Genetic associations were performed by logistic regression models and odds ratios (ORs). The combined effect of the genotypes was researched by genetic risk score (GRS) analysis. Results We identified 15 622 individuals for the GWAS that yielded 34 top single-nucleotide variations (formerly single-nucleotide polymorphisms), and LPAR3-rs147672681 reached genome-wide statistical significance (P = 1.2e-08). Using a more restricted PHPT definition, 8722 individuals with data on the GWAS-identified loci were found. Age- and sex-adjusted ORs for the effect alleles of SOX9-rs11656269, SLITRK5-rs185436526, and BCDIN3D-AS1-rs2045094 showed statistically significant increased risks (P < 1.5e-03). GRS analysis of 5482 individuals showed an OR of 2.51 (P = 1.6e-04), 3.78 (P = 4.0e-08), and 7.71 (P = 5.3e-17) for the second, third, and fourth quartiles, respectively, compared to the first, and there was a statistically significant linear trend across quartiles (P < 1.0e-04). Results were similar when stratifying by sex. Conclusion Using genetic loci discovered in a GWAS of PHPT carried out in a Scottish population, this study suggests new evidence for the involvement of genetic variants at SOX9, SLITRK5, LPAR3, and BCDIN3D-AS1. It also suggests that male and female carriers of greater numbers of PHPT-risk alleles both have a statistically significant increased risk of PHPT.

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