CATSHL syndrome, a new family and phenotypic expansion

Clin Genet. 2024 Mar;105(3):313-316. doi: 10.1111/cge.14455. Epub 2023 Nov 22.

Abstract

We report the case of a 12-year-old girl and her father who both had marked postnatal tall stature, camptodactyly and clinodactyly, scoliosis and juvenile-onset hearing loss. The CATSHL (CAmptodactyly - Tall stature - Scoliosis - Hearing Loss syndrome) syndrome was suspected, and molecular analysis revealed a hitherto unreported, monoallelic variant c.1861C>T (p.Arg621Cys) in FGFR3. This variant affects the same residue, but is different than, the variant p.Arg621His reported in the two families with dominant CATSHL described so far. Interestingly, peg-shaped incisors were observed in the proband, a feature never reported in CATSHL but typical of another FGFR3-related condition, LADD (Lacrimo - Auricolo - Dento - Digital) syndrome. The FGFR3 p.Arg621Cys variant seems to be a newly identified cause of CATSHL syndrome with some phenotypic overlap with the LADD syndrome.

Keywords: CATSHL syndrome; FGFR3; LADD syndrome; camptodactyly; deafness; overgrowth; scoliosis.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abnormalities, Multiple*
  • Bone Diseases, Developmental*
  • Child
  • Deafness*
  • Female
  • Hand Deformities, Congenital*
  • Hearing Loss* / genetics
  • Humans
  • Lacrimal Apparatus Diseases*
  • Limb Deformities, Congenital*
  • Scoliosis* / genetics
  • Syndactyly*
  • Syndrome
  • Tooth Abnormalities*

Supplementary concepts

  • CATSHL syndrome
  • Lacrimoauriculodentodigital syndrome