Phenotypic variability associated with the invariant SHOC2 c.4A>G (p.Ser2Gly) missense mutation

Giuseppina Baldassarre, Alessandro Mussa, Elena Banaudi, Cesare Rossi, Marco Tartaglia, Margherita Silengo, Giovanni Battista Ferrero

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Noonan-like syndrome with loose anagen hair (NS/LAH; OMIM 607721) is a developmental disorder clinically related to Noonan syndrome (NS) and characterized by facial dysmorphisms, postnatal growth retardation, cardiac anomalies (in particular dysplasia of the mitral valve and septal defects), variable neurocognitive impairment, and florid ectodermal features. A distinctive trait of NS/LAH is its association with easily pluckable, slow growing, sparse, and thin hair. This rare condition is due to the invariant c.4A>G missense (p.Ser2Gly) change in SHOC2, which encodes a regulatory protein that participate in RAS signaling. Here we report two patients with molecularly confirmed NS/LAH, with extremely different phenotypic expression, in particular concerning the severity of the cardiac phenotype and neurocognitive profile. While the first available clinical records outlined a relatively homogeneous phenotype in NS/LAH, the present data emphasize that the phenotype spectrum associated with this invariant mutation is wider than previously recognized.

Original languageEnglish
Pages (from-to)3120-3125
Number of pages6
JournalAmerican Journal of Medical Genetics, Part A
Volume164
Issue number12
DOIs
Publication statusPublished - Dec 1 2014

Fingerprint

Noonan Syndrome
Missense Mutation
Phenotype
Loose Anagen Hair Syndrome
Genetic Databases
Mitral Valve
Hair
Mutation
Growth
Proteins

Keywords

  • Noonan syndrome
  • RAS/MAPK
  • Rasopathies
  • SHOC2

ASJC Scopus subject areas

  • Genetics(clinical)
  • Genetics
  • Medicine(all)

Cite this

Phenotypic variability associated with the invariant SHOC2 c.4A>G (p.Ser2Gly) missense mutation. / Baldassarre, Giuseppina; Mussa, Alessandro; Banaudi, Elena; Rossi, Cesare; Tartaglia, Marco; Silengo, Margherita; Ferrero, Giovanni Battista.

In: American Journal of Medical Genetics, Part A, Vol. 164, No. 12, 01.12.2014, p. 3120-3125.

Research output: Contribution to journalArticle

Baldassarre, Giuseppina ; Mussa, Alessandro ; Banaudi, Elena ; Rossi, Cesare ; Tartaglia, Marco ; Silengo, Margherita ; Ferrero, Giovanni Battista. / Phenotypic variability associated with the invariant SHOC2 c.4A>G (p.Ser2Gly) missense mutation. In: American Journal of Medical Genetics, Part A. 2014 ; Vol. 164, No. 12. pp. 3120-3125.
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