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Molecular Medicine

, Volume 23, Issue 1, pp 149–154 | Cite as

Mutation Spectrum of STAR and the Founder Effect of p.Q258* in Korean Patients with Congenital Lipoid Adrenal Hyperplasia

  • Eungu Kang
  • Yoon-Myung Kim
  • Gu-Hwan Kim
  • Beom Hee Lee
  • Han-Wook Yoo
  • Jin-Ho Choi
Research Article

Abstract

Congenital lipoid adrenal hyperplasia (CLAH) is the most severe form of congenital adrenal hyperplasia, caused by defects in the steroidogenic acute regulatory protein (STAR). The STAR p.Q258* mutation is the most common mutation in China, Japan and Korea, suggesting a founder effect. This study aimed to investigate the phenotypic and mutation spectrum of STAR defects and identify the founder effect of the p.Q258* mutation in Korean patients with CLAH. For 45 patients from 42 independent pedigrees, haplotype analysis was performed in 10 unrelated trio families, including patients with the p.Q258* mutation whose DNA samples were available, using 1,972 single nucleotide polymorphism (SNP) and six short tandem repeat markers. An Illumina Infinium® Human Omni2.5-8 v1.3 performed the SNP genotyping. Among 84 alleles from 42 unrelated families, mutation p.Q258* was found in 74 alleles (88.1%) from 41 families. A shared haplotype was identified in 17 of 20 alleles from 10 patients (size, 198 kb). The age of the founder mutation was estimated as 4,875 years (95% credible set: 3,575–7,925 years), assuming an intergenerational time interval of 25 years. The STAR p.Q258* mutation is the most common in Korean patients with CLAH, suggesting a founder effect. The age of the mutation corresponds with the time when the Korean people settled in the Korean peninsula. The high prevalence of p.Q258* in Japan and China also suggests a founder effect in Asian countries.

Notes

Acknowledgments

This work was supported by a grant (2015-01) from the Korean Society of Pediatric Endocrinology.

Supplementary material

10020_2017_2301149_MOESM1_ESM.pdf (235 kb)
Supplementary material, approximately 234 KB.

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Authors and Affiliations

  • Eungu Kang
    • 1
  • Yoon-Myung Kim
    • 1
  • Gu-Hwan Kim
    • 2
  • Beom Hee Lee
    • 1
  • Han-Wook Yoo
    • 1
  • Jin-Ho Choi
    • 1
  1. 1.Department of Pediatrics, Asan Medical Center Children’s HospitalUniversity of Ulsan College of MedicineSeoulKorea
  2. 2.Medical Genetics Center, Asan Medical Center Children’s HospitalUniversity of Ulsan College of MedicineSeoulKorea

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