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  • Title: Recurrent chromosomal rearrangements involving breakpoints 3p21 and 19q13 in Chinese IgD multiple myeloma detected by G-banding and multicolor spectral karyotyping: a review of IgD karyotype literature.
    Author: Ng MH, Wong N, Tsang KS, Cheng SH, Chung YF, Lo KW.
    Journal: Hum Pathol; 2001 Sep; 32(9):1016-20. PubMed ID: 11567234.
    Abstract:
    Immunoglobulin D multiple myeloma (IgD MM) is a rare subtype that accounts for 1% to 3% of MM and shows higher aggressiveness with distinctive clinical and laboratory features. However, there is little information in the literature on their karyotypes, which are mainly derived from G-banding results. Our current study on 2 Chinese IgD MM thus represents the first description of cytogenetic data on this subtype based on an integrated analysis with G-banding and multicolor spectral karyotyping (SKY). Both of our cases showed some usual features of MM, as well as a few novel translocations including t(3;22), t(6;19), t(X;19) and the 3 whole-arm translocations namely t(1;6)(q10;p10), t(4;9)(q10;p10), and t(16;18)(q10;q10). We also identified recurrent chromosomal rearrangements involving breakpoints 3p21 and 19q13, which may suggest to be unique aberrations that may underline the pathogenesis of this distinctive biological MM subtype.
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