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  • Title: No cytogenetic evidence for involvement of gene(s) at 2p16 in sporadic cardiac myxomas: cytogenetic changes in ten sporadic cardiac myxomas.
    Author: Dijkhuizen T, de Jong B, Meuzelaar JJ, Molenaar WM, van den Berg E.
    Journal: Cancer Genet Cytogenet; 2001 Apr 15; 126(2):162-5. PubMed ID: 11376810.
    Abstract:
    Cardiac myxomas are significant causes of cardiovascular morbidity and mortality. Their genetic background is presently unknown. Recently, linkage analysis in cardiac myxomas of Carney complex patients has indicated that 2p16 and 17q2 might carry genes responsible for the development of hereditary cardiac myxomas. Less is known about sporadic cardiac myxomas. To date, cytogenetic analysis has been performed on 13 sporadic cases, and no specific rearrangement has been deduced. We studied 15 sporadic cardiac myxomas and reviewed the literature. Ten of the present cases revealed abnormal karyotypes with clonal and nonclonal rearrangements including dicentric chromosomes and telomeric associations. No cytogenetic evidence was found for a role of 2p16 in the development of sporadic cases. Region 17q2 was involved in structural rearrangements, but to a lesser extent than other regions. Structural rearrangements involving regions 12p1 and 17p1 are more frequently present and might therefore harbor genes important for the development of sporadic cardiac myxomas.
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