[Cytogenetic abnormalities and prognosis of 532 patients with multiple myeloma]

Zhonghua Xue Ye Xue Za Zhi. 2017 Sep 14;38(9):739-743. doi: 10.3760/cma.j.issn.0253-2727.2017.09.002.
[Article in Chinese]

Abstract

Objective: To explore the effect of 6 common cytogenetic abnormalities on the prognosis of multiple myeloma (MM). Methods: Myeloma cells from a cohort of 532 newly-diagnosed MM patients enrolled were enriched by CD138 immunomagnetic beads, then detected 13q-, 17p-, 1q+, t (4;14), t (11;14) and t (14;16) and other common genetic abnormalities in MM by using interphase fluorescence in situ hybridization (FISH) technique to compare the influence of different genetic abnormalities on their prognoses. Results: The rate of cytogenetic abnormalities was 78.20% (416/532) in 532 patients, of which 13q-accounted for 42.29% (225/532), 17p-16.35% (87/532), 1q+ 53.38% (284/532), t (4;14) 25.94% (138/532), t (11;14) 21.62% (115/532), t (14;16) 2.07% (11/532). Six kinds of cytogenetic abnormalities were analyzed, 13q- and 17p-, 1q+, t (4; 14), t (14;16) were all correlated (P <0.05). The univariate analysis indicated that 13q-, 1q+, t (4;14) and t (14;16) had a significant effect on progression-free survival (PFS), 13q-, 17p-, t (4;14) and t (14;16) had a marked influence on overall survival (OS). The multivariate analysis showed that 1q+, t (4;14) and t (14;16) were independent adverse factors of PFS, 17p-, t (4;14) and t (14;16) were independent unfavorable factors of OS. According to the independent prognosis factors number-based groups, the median PFS with 0, 1, 2, 3 independent prognosis factors of patients were 30.9, 28.4, 18.7 and 17.6 months (P =0.035) respectively, and the median OS were 54.4, 46.1, 38.0 and 21.2 months (P =0.004) respectively. Conclusion: 1q+, 17p-, t (4;14) and t (14;16) were independent prognostic factors affecting the survival of MM patients. 13q-is often accompanied by 17p-, 1q + and (or) t (4;14) , simply 13q- was not an independent prognostic factor; the more number of independent prognostic factors, the worse the prognosis of patients.

目的: 探讨多发性骨髓瘤(MM)6种常见细胞遗传学异常对预后的影响。 方法: 对532例初诊MM患者通过CD138免疫磁珠富集骨髓瘤细胞,采用间期荧光原位杂交(FISH)技术对13q-、17p-、1q+、t (4;14)、t (11;14)和t (14;16)等MM常见遗传学异常进行检测,比较不同遗传学异常对预后的影响。 结果: 532例患者中,细胞遗传学异常检出率为78.20%(416/532),其中13q-的检出率为42.29%(225/532),17p-为16.35%(87/532),1q+为53.38% (284/532),t (4;14)为25.94% (138/532),t (11;14)为21.62%(115/532),t (14;16)为2.07%(11/532)。将6种细胞遗传学异常进行相关性分析,得出13q-与17p-、1q+、t (4;14)、t (14;16)的发生均相关(P值均<0.05)。单因素分析结果显示,13q-、1q+、t (4;14)和t (14;16)对患者无进展生存(PFS)有明显影响,13q-、17p-、t (4;14)和t (14;16)对患者总生存(OS)有明显影响。多因素分析结果显示,1q+、t (4;14)和t (14;16)是影响患者PFS的独立预后不良因素,17p-、t (4;14)和t (14;16)是影响患者OS的独立预后不良因素。将患者根据所伴有的独立预后不良因素的数量进行分组,伴有0、1、2、3个独立预后不良因素的患者中位PFS时间分别为30.9、28.4、18.7、17.6个月(P=0.035),中位OS分别为54.4、46.1、38.0、21.2个月(P=0.004)。 结论: 1q+、17p-、t (4;14)和t (14;16)是影响MM患者生存的独立预后不良因素;13q-的发生常伴随着17p-、1q+和(或)t (4;14),单纯13q-不是独立预后因素;伴有的独立预后不良因素数量越多,患者预后越差。.

Keywords: Cytogenetics; Fluorescence in situ hybridization; Multiple, myeloma; Prognosis.

MeSH terms

  • Chromosome Aberrations
  • Chromosome Disorders
  • Humans
  • In Situ Hybridization, Fluorescence
  • Multiple Myeloma*
  • Prognosis

Grants and funding

基金项目:国家自然科学基金(81670193)