1例男性46,XY,t（Y;1）不孕症患者的染色体核型分析

目的了解核型为46,XY,t（Y;1）（q12;p33）伴无精子症男性患者的分子遗传学特点。方法采用常规方法制备外周血淋巴细胞染色体,经G显带进行染色体核型分析。结果患者1号染色体短臂与Y染色体长臂相互易位。结论患者无精子症是由于Y染色体与1号染色体易位所致,携带异常核型染色体,可能是影响生育的重要原因之一。     

染色体结构异常45,X,ter rea(X;10)(p22;q26)首例报告

报道1例生长发育迟缓、智力低下的8岁女性患儿，细胞遗传学检查发现其异常核型为45，X，terrea（X；10）（p22；q26），该核型经湖南医科大学医学遗传学国家重点实验室鉴定为世界首报。     

用Y特异DNA探针对染色体核型46,X,t(X;Y)(p22.3;q12.1)患者的分析

本文报道一女性的第一、二性征均正常,但GTG显带的核型中可见到下条异常X染色体短臂增长,断裂点为Xp22.3,CBG显带核型中异常X染色体均连接1个额外浅染片段。用凝胶原位杂交法以Y特异DNA探针进行DNA分析,分子杂交图谱与正常男性相一致,证实患者基因组DNA含有DYZ_1重复顺序。故该女性染色体核型为46,X,t(X; Y) (qter→p22.3::q12.1→qter).此外,对患者的临床特征、女性性腺激素、染色体异常产生原因及有关问题作了讨论。     

仅由t(10;12)(q24;p13)异常所致的难治性急性髓细胞白血病首例报道和文献回顾

Rearrangements involving chromosome region at 12p13 are common abnormalities in hematological malignancies, including myeloid and lymphoid types. ETV6 gene is usually involved in the 12p13 region. ETV6 rearrangements are more often observed in acute lymphoblastic leukemia than in acute myeloid leukemia (AML), where ETV6 gene deletions are more common than rearrangements.Here, we report an AML case with the recurrent t(10;12) (q24;p13) as the sole abnormality. Fluorescence in situ hybridization with mapping back to metaphases confirmed that the ETV6 gene splits, and rearranges with a locus at 10q24. In review of the literature, this is the first report of AML case with the novel abnormality as the sole change. Complete laboratory findings from bone marrow examination, flow cytometry analysis, cytogenetie studies, molecular analysis, and clinical features are also described in the report.