Translocation t(11;14)(q13;q32) is the hallmark of IgM, IgE, and nonsecretory multiple myeloma variants

Translocation t(11;14)(q13;q32) is the hallmark of IgM, IgE, and nonsecretory multiple myeloma variants
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DOI:
10.1182/blood-2002-08-2436
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发表时间:
2003-02-15
期刊:
影响因子:
20.3
通讯作者:
Bataille, R
Bataille, R
中科院分区:
医学1区
文献类型:
--
作者:
Avet-Loiseau, H;Garand, R;Bataille, R

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为了探讨多发性骨髓瘤(MM)变异的细胞遗传学特征,我们用荧光原位杂交技术分析了8例IgM、9例IgD、2例IgE和14例非分泌型MM的细胞遗传学特征。T(11;14)(q13;q32)在IgM(7/8)、IgE(2/2)和NS(11/14)MM患者中有很高的发生率(83%),而在IGD患者(2/9)中未检测到。值得注意的是,在这组患者中没有观察到t(4;L 4)。T(11;14)的增加与这些变异中的两个主要特征有关,即主要发生在IgM MM中的“淋巴浆细胞性”表现和其他病例中较低的分泌能力,这两个特征以前与t(11;14)有关。值得注意的是,t(11;14)从未在Waldenstrom巨球血症或Ig G/Ig A“淋巴浆细胞性”淋巴瘤中观察到。因此,对于不明原因的梅毒患者,t(11;14)是IgM、IgE和NS MM的标志(但不是IGD MM),其发病率是免疫球蛋白和IgA MM的5倍。
In an attempt to address the issue of cytogenetic features of multiple myeloma (MM) variants, we have analyzed a series of 8 IgM, 9 IgD, 2 IgE, and 14 nonsecretory (NS) MM cases using fluorescence in situ hybridization. A very high incidence (83%) of t(11;14)(q13;q32) was detected in the IgM (7 of 8), IgE (2 of 2), and NS (11 of 14) MM cases, but not in the IgD cases (2 of 9). Of note, no t(4;l 4) was observed in this cohort of patients. This increased incidence of t(11;14) was associated with 2 dominant features in these variants, namely, a "lymphoplasmacytic" presentation mainly in IgM MM and a lower secreting capacity in the others, 2 features previously associated with t(11;14). Of major interest, t(11;14) was never observed in Waldenstrom macroglobullnemia or in IgG/IgA "lymphoplasmacytic" lymphomas. Thus, for unknown masons, t(11;14) is the hallmark of IgM, IgE, and NS MM, (but not IgD MM), with a 5-fold increase of its incidence compared to that of IgG and IgA MM.