Coffin-Siris Syndrome


Type of disease: Rare conditions

Coffin-Siris syndrome is a genetic condition that causes variable degrees of learning disability, developmental delays, underdeveloped “pinky” toenails or fingernails, and distinct facial features. It can be caused by a change (mutation) in any of several genes including the ARID1A, ARID1B, SMARCA4, SMARCB1, or SMARCE1 genes. Coffin-Siris syndrome is not usually inherited, but occurs for the first time in a family due to a new mutation.Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.

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