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机构地区:[1]解放军464医院神经外科,天津300381 [2]解放军464医院放射科,300381 [3]西京医院神经外科,710032
出 处:《临床肿瘤学杂志》2015年第10期879-884,共6页Chinese Clinical Oncology
基 金:国家自然科学基金青年科学基金项目(81402049)
摘 要:目的探讨IGFBP-3基因转录表达水平在胶质母细胞瘤(GBM)患者预后评价中的意义。方法采用训练-验证分组方式,利用GBM在线样本库TCGA、REMBRANDT和GSE16011中病例的临床资料和芯片数据,通过Kaplan-Meier法和Cox回归分析,探讨IGFBP-3 mRNA表达与GBM患者总生存时间(OS)的关系。结果在TCGA训练组中,IGFBP-3基因高表达患者的中位OS为14.3个月(95%CI:12.5~16.1个月),显著差于低表达的15.9个月(95%CI:13.7~18.1个月),差异具有统计学意义(P=0.002);REMBRANDT病例组中,IGFBP-3高、低表达组患者的中位OS分别为13.2个月(95%CI:10.8~15.6个月)和16.8个月(95%CI:13.4~20.1个月),差异具有统计学意义(P=0.036);GSE16011病例组的中位OS分别为7.4个月(95%CI:6.6~8.3个月)和13.1个月(95%CI:9.2~17.0个月),差异具有统计学意义(P〈0.001)。多因素Cox回归分析及亚型分层分析表明,IGFBP-3 mRNA表达分组的预后评价能力可能依赖于不同的GBM基因表达亚型。结论IGFBP-3 mRNA表达水平与GBM患者的临床预后密切相关,且可能与不同的基因表达亚型有关。Objective To discuss the prognostic value of IGFBP-3 mRNA expression in glioblastoma( GBM). Methods The genomic mRNA expression data and patients' clinical data from three different GBM datasets,TCGA,REMBARNDT and GSE16011 were obtained,and the prognostic value of IGFBP-3 mRNA expression in GBM patients were investigated using KaplanMeier method and multivariate Cox regression analysis. Results In the TCGA dataset,patients with higher IGFBP-3 mRNA expression were associated with shorter overall survival( OS) than patients with lower IGFBP-3 mRNA expression. the median OS was 14. 3months( 95% CI: 12. 5-16. 1) vs. 15. 9 months( 95% CI: 13. 7-18. 1),with significant differences( P = 0. 002); similarly,in another two validation datasets,patients in high expression groups had shorter OS than those in low expression groups: REMBRANDT dataset: 13. 2 months( 95% CI: 10. 8-15. 6) vs. 16. 7 months( 95% CI 13. 4-20. 1),with significant differences( P = 0. 036);GSE16011 dataset: 7. 4 months( 95% CI: 6. 6-8. 3) vs. 13. 1 months( 95% CI: 9. 2-17. 0),with significant differences( P〈0. 001).Cox model indicated that the prognostic value of IGFBP-3 mRNA expression might be dependent on gene expression subtype of GBMs.Conclusion The present study revealed and validated the prognostic value of IGFBP-3 mRNA expression in GBM patients,and suggested its dependence on gene expression subtypes of GBMs.
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