核型
细胞淋巴瘤
淋巴瘤
病理
染色体
生物
活检
医学
遗传学
基因
作者
Kohei Fujikura,Daisuke Yamashita,Makoto Yoshida,Takayuki Ishikawa,Tomoo Itoh,Yukihiro Imai
标识
DOI:10.1136/jclinpath-2020-206573
摘要
Aims To characterise the karyotypic abnormalities and heterogeneities in intravascular lymphoma (IVL). Methods G-banded karyotyping was performed on biopsy specimens from a single-centre IVL cohort comprising intravascular large B-cell lymphoma (IVLBCL, n=12) and NK/T-cell lymphoma (IVNKTCL, n=1). Results Five IVLBCL cases and one IVNKTCL case (total 46%) were found to have normal karyotypes, and the cytogenetic abnormalities observed in the other seven IVLBCL cases (54%) were investigated further. These seven karyotypes were uniformly complex with an average of 13 aberrations. The seven cases all had abnormalities involving chromosome 6, with 57% involving structural abnormalities at 6q13, and chromosome 8, with 43% involving abnormalities at 8p11.2. In addition, 71% had aberrations at 19q13. On average, 4.4 chromosomal gains and losses were detected per case. Cytogenetic heterogeneities were observed in six cases (86%) and tetraploidy in three cases (43%). There was no significant difference in progression-free survival (p=0.92) and overall survival (p=0.61) between the IVLBCL cases with complex and normal karyotypes. Conclusion Approximately half of IVLBCL cases had a highly heterogeneous pattern of karyotypes with different clonal numerical and structural chromosome aberrations.
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