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  • Title: Dup(3)(p2----pter) in two families, including one infant with cyclopia.
    Author: Gimelli G, Cuoco C, Lituania M, Cordone M, Aricò M, Bianchi E, Maraschio P, Zuffardi O.
    Journal: Am J Med Genet; 1985 Feb; 20(2):341-8. PubMed ID: 3919583.
    Abstract:
    We report on 2 unrelated cases of duplication of distal 3p due to balanced maternal translocation t(3;6)(p23;q27) and t(2;3)(p25;p23) respectively. One family was ascertained through the unbalanced offspring and the other through echographic examination of the balanced carrier mother. These cases confirm that dup(3)(p2----pter) results in a characteristic syndrome with distinctive facial appearance. In family 2 inspection of a photograph of a deceased sib was sufficient to conclude that he was affected. The patient in family 2 had cyclopia. Since holoprosencephaly was also reported by Martin and Steinberg [1983], we conclude that this anomaly appears to be a sign of the syndrome. The duplication usually derives from a maternal balanced translocation, in most cases from adjacent-1 segregation. However, family 2 was ascertained through a balanced female carrier who inherited the translocation from the father. We have noted that the second chromosome (which varies without apparent preferences) involved in these translocations is broken consistently at a distal band.
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