Clinical features, diagnostic criteria, and management of Coffin-Siris syndrome

Am J Med Genet C Semin Med Genet. 2014 Sep;166C(3):252-6. doi: 10.1002/ajmg.c.31411. Epub 2014 Aug 28.


Coffin-Siris syndrome (OMIM#135900) is a multiple congenital anomaly syndrome classically characterized by hypo- or aplasia of the fifth digit nails or phalanges, as well as coarse facial features, sparse scalp hair, and moderate to severe cognitive and/or developmental delay. The recent identification of molecular etiologies has served to effectively characterize a large set of patients who have been described with Coffin-Siris between the time of its initial description and the present. However, despite recent advances, a number of patients who traditionally fit the diagnosis have yet to have identified causes. This could be due to patients who lie outside the defined phenotype, or alternatively, to additional as yet unidentified genes which may play roles. Here we outline the range of clinical features described in the broader diagnostic category, review the continuing phenotypic challenges and note those subsets of patients for whom molecular causes have yet to be clarified. Finally, we discuss recommendations for clinical management of these individuals.

Keywords: BAF pathway; Coffin-Siris; developmental delay; diagnostic criteria; fifth-digit.

MeSH terms

  • Abnormalities, Multiple / diagnosis*
  • Abnormalities, Multiple / etiology*
  • Face / abnormalities*
  • Hand Deformities, Congenital / diagnosis*
  • Hand Deformities, Congenital / etiology*
  • Humans
  • Intellectual Disability / diagnosis*
  • Intellectual Disability / etiology*
  • Micrognathism / diagnosis*
  • Micrognathism / etiology*
  • Mutation
  • Neck / abnormalities*
  • Practice Guidelines as Topic

Supplementary concepts

  • Coffin-Siris syndrome