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作 者:陈燕[1] 殷于磊[1] 朱雄增[2] RichardIrons 陈慧[3]
机构地区:[1]复旦大学附属华东医院病理科,上海200333 [2]复旦大学附属肿瘤医院病理科,上海200333 [3]复旦大学中美联合分子医学研究中心,上海200333
出 处:《中华肿瘤杂志》2012年第2期117-121,共5页Chinese Journal of Oncology
摘 要:目的探讨中国人滤泡性淋巴瘤(FL)的细胞遗传学改变。方法应用染色体核型分析57例来自中国上海地区的FL患者的染色体改变情况,并采用荧光原位杂交技术检测t(14;18)和Bel-6、IgH基因重排情况。结果57例FL中,常见的断裂点(发生频率≥10%)分别为14q32(68.4%)、18q2I(38.6%)、3q27(21.1%)、lqlO(15.8%)和lq21(12.3%),有19例(33.3%)F1L存在t(14;18)。18q21断裂点和t(14;18)在1-2级FL中的发生频率较高(57.6%和54.5%),而在3级FL中较低(12.5%和4.2%,P〈0.05);而3q27/Bel-6则主要发生在3级F1L(37.5%)中,较少发生在1-2级FL(9.1%,P〈O.05)中。在染色体数目改变上,发生频率≥10%的染色体的获得或缺失有X+(21.1%)、lq+(35.1%)、5+(10.5%)、6p+(12.3%)、7+(22.8%)、12q+(10.1%)、18q+(17.5%)、1p-(14.0%)、6q-(14.0%)和14q32-(15.8%)。1-2级FIJ中18q+的发生频率高于FL3级(P〈0.05)。t(14;18)-F1L中14q32-的发生频率高于t(14;18)+FL(P〈0.05)。结论中国上海地区FTJ在细胞遗传学改变上主要为t(14;18)明显偏低以及1q+发生频率较高,且在3级FL中更加显著。Objective To study the cytogenetic profiles of follicular lymphoma (FL) in Chinese patients. Methods Conventional karyotype in 57 FL patients from Shanghai area was analyzed. Fluorescence in-situ hybridization (FISH) for t (14; 18 ) and Bcl-6 and IgH gene reammgement was performed in these cases. Resulls The most frequent breakpoints (frequency≥10% ) of the 57 FL cases were at band 14q32 (68.4%), 18q21 (38.6%), 3q27 (21.1%), lqlO (15.8%) and lq21 (12.3%). Nineteen (33.3%) of the 57 cases had t(14;18). The breakpoint of 18q21 and t(14;18) were more frequent in FL grade 1-2 and less frequent in FL grade 3 (57.6% vs. 12.5% ; 54.5% vs. 4. 2%, P 〈 O. 05), whereas the 3q27/Bcl-6 rearrangement was more frequent in FL grade 3 and less frequent in FL grade 1-2 (37.5% vs. 9.1%, P 〈0.05 ). The cohort of FL was more frequent in gains of chromosomes X, lq, 5,6p, 7 and 12q and losses of chromosomes lp, 6p and 14q32. Gain of 18q was more frequent in FL grade 1-2 than in FL grade 3 (P〈0. O5). Loss of 14q32 was more frequent in t(14;18) negative FL than in t(14;18) positive FL (P 〈0.05). Conclusions Compared with the data of Western patients reported in the literature, Chinese FL cases had distinct cytogenetic profiles from Western FL eases that the t(14;18) is less frequent and the gain of lq is more frequent in Chinese FL cases, which are more significant in high grade FL.
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