The First Korean Family with Aarskog-Scott Syndrome Harboring a Novel Mutation in FGD1 Diagnosed via Targeted Gene Panel Sequencing

Ann Clin Lab Sci. 2020 Sep;50(5):691-698.

Abstract

Aarskog-Scott syndrome (AAS), also known as faciogenital dysplasia (FGD, OMIM # 305400), is an X-linked recessive inheritance, characterized by short stature, facial dysmorphism, and skeletal abnormalities. We report the clinical and molecular analysis of a family with ASS. A 31-month-old boy and his cousin were initially mistaken for having Noonan syndrome owing to short stature and facial dysmorphism. Considering the family history, we suspected the possibility of an X-linked genetic disease and performed targeted gene panel sequencing; a novel hemizygous variant c.1192-1 G>A in FGD1 was identified in both the proband and his cousin. This is the first report of ASS in Korea. Targeted gene panel sequencing can be an effective tool for diagnosing rare complex syndromes, including ASS.

Keywords: Aarskog-Scott syndrome; FGD1; X-linked inheritance; facial dysmor-phism; faciogenital dysplasia; short stature.

Publication types

  • Case Reports

MeSH terms

  • Abnormalities, Multiple / genetics
  • Child, Preschool
  • Dwarfism / diagnosis*
  • Dwarfism / genetics*
  • Face / abnormalities*
  • Family
  • Female
  • Genetic Diseases, X-Linked / diagnosis*
  • Genetic Diseases, X-Linked / genetics*
  • Genitalia, Male / abnormalities*
  • Guanine Nucleotide Exchange Factors / genetics*
  • Guanine Nucleotide Exchange Factors / metabolism
  • Hand Deformities, Congenital / diagnosis*
  • Hand Deformities, Congenital / genetics*
  • Heart Defects, Congenital / diagnosis*
  • Heart Defects, Congenital / genetics*
  • Humans
  • Male
  • Mutation / genetics
  • Pedigree
  • Republic of Korea / epidemiology

Substances

  • FGD1 protein, human
  • Guanine Nucleotide Exchange Factors

Supplementary concepts

  • Aarskog Syndrome