Novel SUZ12 mutations in Weaver-like syndrome

Clin Genet. 2018 Nov;94(5):461-466. doi: 10.1111/cge.13415. Epub 2018 Aug 6.

Abstract

SUZ12 is a core component of polycomb repressive complex 2 (PRC2) along with EZH2 and EED. Recently, germline mutations in the SUZ12, EZH2 and EED genes have been reported in Weaver syndrome (WS) or Weaver-like syndrome, suggesting a functional link between PRC2 deficits and WS. However, only one case of a SUZ12 mutation presenting with Weaver-like syndrome has been reported. Here, we report a missense and a frameshift mutation in SUZ12 (c.1797A>C; p.Gln599His and c.844_845del; p.Ala282Glnfs*7), both of which are novel, in two individuals. Their clinical features included postnatal overgrowth, increased bifrontal diameter, large ears, round face, horizontal chin crease and skeletal anomalies, but did not fulfill the WS diagnostic criteria. These data provide strong evidence that SUZ12 mutations cause Weaver-like syndrome.

Keywords: SUZ12; Weaver syndrome; Weaver-like syndrome; whole exome sequencing.

Publication types

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

MeSH terms

  • Abnormalities, Multiple / diagnosis*
  • Abnormalities, Multiple / genetics*
  • Alleles
  • Amino Acid Substitution
  • Congenital Hypothyroidism / diagnosis*
  • Congenital Hypothyroidism / genetics*
  • Craniofacial Abnormalities / diagnosis*
  • Craniofacial Abnormalities / genetics*
  • Facies
  • Female
  • Genetic Association Studies*
  • Genetic Predisposition to Disease*
  • Genotype
  • Hand Deformities, Congenital / diagnosis*
  • Hand Deformities, Congenital / genetics*
  • Humans
  • Male
  • Mutation*
  • Neoplasm Proteins
  • Pedigree
  • Phenotype*
  • Polycomb Repressive Complex 2 / genetics*
  • Transcription Factors

Substances

  • Neoplasm Proteins
  • SUZ12 protein, human
  • Transcription Factors
  • Polycomb Repressive Complex 2

Supplementary concepts

  • Weaver-Like Syndrome