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  • Title: Translocation, t(4qminus;13qplus), in three generations resulting in partial trisomy of the long arm of chromosome 4 in the fourth generation.
    Author: Schrott HG, Sakaguchi S, Francke U, Luzzatti L, Fialkow PJ.
    Journal: J Med Genet; 1974 Jun; 11(2):201-5. PubMed ID: 4135220.
    Abstract:
    The karyotype of a child with severe mental retardation, microcephaly, minor facial anomalies, and urinary tract outflow obstruction was found to be 46,XY,13q+mat. Trypsin-Giemsa banding studies showed an inherited translocation, t(4q−;13q+), in several asymptomatic members of the family including the propositus' mother. This indicates that the propositus had partial trisomy for the distal one-third of the long arm of chromosome 4. Review of the literature suggests that urinary tract and genital anomalies may be a consistent feature of this partial trisomy.
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