Coffin-siris Syndrome 1; Css1

Description

Coffin-Siris syndrome is a multiple malformation syndrome characterized by mental retardation associated with coarse facial features, hypertrichosis, sparse scalp hair, and hypoplastic or absent fifth fingernails or toenails. Other more variable features may include poor overall growth, craniofacial abnormalities, spinal anomalies, and congenital heart defects (review by Vergano and Deardorff, 2014). Mutations in the ARID1B gene are the most common cause of Coffin-Siris syndrome (Wieczorek et al., 2013). Genetic Heterogeneity of Coffin-Siris SyndromeForms of Coffin-Siris syndrome have been shown to be caused by mutations in genes encoding subunits of the SWI/SNF complex, also known as the BAF complex, which functions as a chromatin remodeling factor. These include CSS2 (OMIM ), caused by mutation in the ARID1A gene (OMIM ); CSS3 (OMIM ), caused by mutation in the SMARCB1 gene (OMIM ); CSS4 (OMIM ), caused by mutation in the SMARCA4 gene (OMIM ); CSS5 (OMIM ), caused by mutation in the SMARCE1 gene (OMIM ); CSS6 (OMIM ), caused by mutation in the ARID2 gene (OMIM ); and CSS7 (OMIM ), caused by mutation in the DPF2 gene (OMIM ).A similar phenotype, Nicolaides-Baraitser syndrome (NCBRS ), is also caused by mutation in a subunit of this complex, i.e., SMARCA2 (OMIM ).

Clinical Features

Top most frequent phenotypes and symptoms related to Coffin-siris Syndrome 1; Css1

  • Intellectual disability
  • Seizures
  • Global developmental delay
  • Short stature
  • Generalized hypotonia
  • Hearing impairment
  • Microcephaly
  • Scoliosis
  • Growth delay
  • Hypertelorism

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Incidence and onset information

Not enough data available about incidence and published cases.
No data available about the known clinical features onset.

Alternative names

Coffin-siris Syndrome 1; Css1 Is also known as fifth digit syndrome, coffin-siris syndrome, mrd12, css, mental retardation, autosomal dominant 12.

Researches and researchers

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Coffin-siris Syndrome 1; Css1 Recommended genes panels

Panel Name, Specifity and genes Tested/covered
Syndromic Autism Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

SCN1A, SCN2A, BRAF, SLC2A1, SLC9A6, SMC1A, KDM5C, CDKL5, STXBP1, TBR1, TCF4, MED12, TSC1, TSC2, UBE3A, HDAC8, CNTNAP2, FOXP2, CACNA1C, NSD1 , (...)

View the complete list with 63 more genes
Specificity
2 %
Genes
100 %
Coffin-Siris Syndrome Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

SMARCA2, SMARCA4, SMARCB1, SMARCE1, ARID1A, SMC1A, SOX11, BTD, HDAC8, ADNP, ARID2, ARID1B, PHF6, ANKRD11, SMC3, PIGV, NIPBL, TBC1D24, HELLS, KMT2D , (...)

View the complete list with 1 more genes
Specificity
5 %
Genes
100 %
Cornelia de Lange Syndrome PLUS Sequencing Panel.

By Genetic Services Laboratory University of Chicago (United States).

ROR2, SMARCA2, SMARCA4, SMARCB1, SMARCE1, ARID1A, SMC1A, SOX11, WNT5A, HDAC8, ADNP, ARID1B, PHF6, ANKRD11, CREBBP, SMC3, ESCO2, NIPBL, TBC1D24, EP300 , (...)

View the complete list with 1 more genes
Specificity
5 %
Genes
100 %
Non-Specific Intellectual Disability Panel.

By Genetic Services Laboratory University of Chicago (United States).

RPS6KA3, CLIP1, SCN2A, ST3GAL3, SLC16A2, SLC25A1, SLC6A8, SLC9A6, SMARCA4, SMARCB1, ARID1A, SMC1A, KDM5C, SMS, SOX11, CDKL5, STXBP1, SYN1, SYNGAP1, SYP , (...)

View the complete list with 153 more genes
Specificity
1 %
Genes
100 %
Coffin-Siris syndrome Sequencing Panel.

By Genetic Services Laboratory University of Chicago (United States).

SMARCA2, SMARCA4, SMARCB1, SMARCE1, ARID1A, SOX11, ADNP, ARID1B, PHF6, ANKRD11, TBC1D24
Specificity
10 %
Genes
100 %
Coffin-Siris syndrome Deletion/Duplication Panel.

By Genetic Services Laboratory University of Chicago (United States).

SMARCA2, SMARCA4, SMARCB1, SMARCE1, ARID1A, SOX11, ADNP, ARID1B, PHF6, ANKRD11, TBC1D24
Specificity
10 %
Genes
100 %
Cornelia de Lange PLUS Deletion/Duplication Panel.

By Genetic Services Laboratory University of Chicago (United States).

ROR2, SMARCA2, SMARCA4, SMARCB1, SMARCE1, ARID1A, SMC1A, SOX11, WNT5A, HDAC8, ADNP, AFF4, ARID1B, PHF6, ANKRD11, CREBBP, SMC3, ESCO2, NIPBL, TBC1D24 , (...)

View the complete list with 2 more genes
Specificity
5 %
Genes
100 %
AutismNext.

By Ambry Genetics (United States).

SCN2A, SLC6A8, SLC9A6, SMC1A, CDKL5, SYNGAP1, TBR1, TCF4, MED12, TSC1, TSC2, UBE3A, HDAC8, CNTNAP2, CACNA1C, NSD1, PCDH19, NLGN4X, NLGN3, SHANK3 , (...)

View the complete list with 28 more genes
Specificity
3 %
Genes
100 %

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Sources and references

You can check the following sources for additional information.

OMIM Genetic Syndrome Finder

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