目的探讨与肝细胞癌(HCC)远处转移相关的DNA拷贝数变异(copy number alteration,CNA)分子标志。方法采用高分辨率Agilent 244K微阵列比较基因组杂交(aCGH)方法检测63例HCC样本基因组DNA的CNA特征。以Log-rank检验、Kaplan-Meier生存分...目的探讨与肝细胞癌(HCC)远处转移相关的DNA拷贝数变异(copy number alteration,CNA)分子标志。方法采用高分辨率Agilent 244K微阵列比较基因组杂交(aCGH)方法检测63例HCC样本基因组DNA的CNA特征。以Log-rank检验、Kaplan-Meier生存分析以及Cox风险比例模型,分析各DNA片段CNA与HCC远处转移的相关性。结果染色体片段12p12.2-13.31丢失是HCC患者远处转移的显著危险因素(P<0.01,Log-rank检验)。与非丢失者相比,12p12.2-13.31丢失HCC患者的远处转移风险比(hazard ratio,HR)为22.98(95%CI=4.29~123.22,P<0.01)。多变量Cox回归分析显示,12p12.2-13.31丢失是HCC远处转移的独立预测因素(HR=7.94,95%CI=1.14~55.61,P<0.05)。结论染色体片段12p12.2-13.31丢失增加HCC远处转移风险,可作为预测HCC远处转移的一个分子标志。展开更多
The major mechanism for ring chromosome formation is thought to result from breakage and reunion at the breakpoints on the long and short arms of a chromosome.This fusion event can produce terminal arm inversions,dele...The major mechanism for ring chromosome formation is thought to result from breakage and reunion at the breakpoints on the long and short arms of a chromosome.This fusion event can produce terminal arm inversions,deletions,and duplications that determine the resulting phenotype.[1] Ring chromosome 13 is relatively uncommon,with an estimated incidence of 1/58,000 live births.展开更多
文摘目的探讨与肝细胞癌(HCC)远处转移相关的DNA拷贝数变异(copy number alteration,CNA)分子标志。方法采用高分辨率Agilent 244K微阵列比较基因组杂交(aCGH)方法检测63例HCC样本基因组DNA的CNA特征。以Log-rank检验、Kaplan-Meier生存分析以及Cox风险比例模型,分析各DNA片段CNA与HCC远处转移的相关性。结果染色体片段12p12.2-13.31丢失是HCC患者远处转移的显著危险因素(P<0.01,Log-rank检验)。与非丢失者相比,12p12.2-13.31丢失HCC患者的远处转移风险比(hazard ratio,HR)为22.98(95%CI=4.29~123.22,P<0.01)。多变量Cox回归分析显示,12p12.2-13.31丢失是HCC远处转移的独立预测因素(HR=7.94,95%CI=1.14~55.61,P<0.05)。结论染色体片段12p12.2-13.31丢失增加HCC远处转移风险,可作为预测HCC远处转移的一个分子标志。
文摘The major mechanism for ring chromosome formation is thought to result from breakage and reunion at the breakpoints on the long and short arms of a chromosome.This fusion event can produce terminal arm inversions,deletions,and duplications that determine the resulting phenotype.[1] Ring chromosome 13 is relatively uncommon,with an estimated incidence of 1/58,000 live births.