" /> Opitz gbbb syndrome - CISMeF





Preferred Label : Opitz gbbb syndrome;

Symbol : GBBB;

CISMeF acronym : BBBG1; GBBB1; OGS1; OS; OSX;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Opitz syndrome; Opitz gbbb syndrome, X-linked; Opitz syndrome, X-linked; OSX; Opitz bbbg syndrome, type I; Hypertelorism with esophageal abnormality and hypospadias; OGS1; Opitz-g syndrome, type I; OS; Hypertelorism-hypospadias syndrome; Telecanthus-hypospadias syndrome; BBBG1; GBBB1; Opitz gbbb syndrome, type I;

Description : The Opitz GBBB syndrome is a congenital midline malformation syndrome characterized by hypertelorism, hypospadias, cleft lip/palate, laryngotracheoesophageal abnormalities, imperforate anus, developmental delay, and cardiac defects (So et al., 2005). This disorder was first reported as 2 separate entities, BBB syndrome and G syndrome; subsequent reports of families in which the BBB and G syndromes segregated within a single kindred suggested that they represent a single entity. Opitz GBBB syndrome is genetically heterogeneous, with both X-linked and autosomal dominant (145410) forms.;

Inheritance : X-linked recessive;

Molecular basis : Caused by mutations in the midline 1 gene (MID1, 300000.0001);

Prefixed ID : #300000;

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05/05/2025


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