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  • Title: Toriello-Carey syndrome in a patient with a de novo balanced translocation [46,XY,t(2;14)(q33;q22)] interrupting SATB2.
    Author: Tegay DH, Chan KK, Leung L, Wang C, Burkett S, Stone G, Stanyon R, Toriello HV, Hatchwell E.
    Journal: Clin Genet; 2009 Mar; 75(3):259-64. PubMed ID: 19170718.
    Abstract:
    Toriello-Carey syndrome (TCS; OMIM 217980) is a multiple congenital anomaly syndrome characterized by the common manifestations of corpus callosum agenesis, cardiac defects, cleft palate/Robin sequence, hypotonia, mental retardation, postnatal growth retardation and distinctive facial dysmorphology (including micrognathia, telecanthus, small nose and full cheeks). Both autosomal recessive and X-linked inheritance have been proposed, but chromosomal abnormalities involving disparate loci have also been detected in a small number of cases. We report a patient with classical features of TCS and an apparently balanced de novo translocation between chromosomes 2 and 14 [46,XY,t(2;14)(q33;q22)]. Molecular characterization revealed direct interruption of the special AT-rich sequence-binding protein-2 (SATB2) gene at the 2q33.1 translocation breakpoint, while the 14q22.3 breakpoint was not intragenic. SATB2 mutation or deletion has been associated with both isolated and syndromic facial clefting; however, an association with TCS has not been reported. SATB2 functions broadly as a transcription regulator, and its expression patterns suggest an important role in craniofacial and central nervous system development, making it a plausible candidate gene for TCS.
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