Classic phenotype of Coffin-lowry syndrome in a female with stimulus-induced drop episodes and a genotype with preserved N-terminal kinase domain

Academic Article


  • An adolescent female presented with intellectual disability, stimulus-induced drop episodes (SIDEs), facial characteristics that include wide set eyes, short nose with wide columella, full and everted lips with wide mouth and progressive skeletal changes: scoliosis, spondylolisthesis and pectus excavatum. These findings were suggestive of Coffin-Lowry syndrome (CLS), and this was confirmed by the identification of a novel mutation in RPS6KA3, a heterozygous one basepair duplication at nucleotide 1570 (c.1570dupA). This mutation occurs within the C-terminal kinase domain of the protein, and, therefore contradicts the previous report that SIDEs is only associated with premature truncation of the protein in the N-terminal kinase domain or upstream of this domain. As CLS is X-linked, it is unusual for a female to have such a classic phenotype. © 2013 Wiley Periodicals, Inc.
  • Authors

    Digital Object Identifier (doi)

    Author List

  • Rojnueangnit K; Jones JR; Basehore MJ; Robin NH
  • Start Page

  • 516
  • End Page

  • 521
  • Volume

  • 164
  • Issue

  • 2