Journal of Genetic Medicine

Korean Society of Medical Genetics and Genomics (대한의학유전학회)
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Two siblings with Bardet-Biedl syndrome caused by mutations in BBS10 : the first case identified in Korea

  • Yoon, Sung Chul (Department of Pediatrics, Seoul National University College of Medicine) ;
  • Lee, Hye Jin (Department of Pediatrics, Seoul National University College of Medicine) ;
  • Ko, Jung Min (Department of Pediatrics, Seoul National University College of Medicine) ;
  • Kang, Hee Gyung (Department of Pediatrics, Seoul National University College of Medicine) ;
  • Cheong, Hae Il (Department of Pediatrics, Seoul National University College of Medicine) ;
  • Yu, Hyeong Gon (Department of Opthalmology, Seoul National University College of Medicine) ;
  • Kim, Jae Hyung (Department of Opthalmology, Chungbuk National University Hospital)
  • Received : 2014.04.23
  • Accepted : 2014.06.05
  • Published : 2014.06.30
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Abstract

Bardet-Biedl syndrome (BBS) is a rare ciliopathy generally inherited with an autosomal recessive pattern. BBS is characterized by 6 primary features namely retinal dystrophy, obesity, postaxial polydactyly, renal dysfunction, learning difficulties, and hypogonadism and a wide range of secondary features. To date, mutations in 16 genes have been identified as causative factors for BBS. Among them, the BBS1 and BBS10 genes are major disease-causing genes, and each of these gene mutations presents in more than 20% of all BBS patients. Genotype-phenotype correlations have not been observed in BBS, and there can be phenotypic overlap between BBS and other ciliopathies. In Korea, no molecular, genetically confirmed case of BBS has been reported to date. Herein, we describe the case of the first Korean siblings with BBS resulting from 2 BBS10 gene mutations who showed typical clinical phenotypes, including retinal dystrophy, obesity, intellectual disability, cystic tubular disease, and postaxial polydactyly.

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References

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