在结肠癌患者中,DNA标记物预测辅助剂甲的益处:一个分子研究
P L Barratt1, M T Seymour, S P Stenning
1Academic Unit of Pathology, School of Medicine, University of Leeds, Leeds, UK.
Lancet (London, England)
|November 9, 2002
概括
分子标记可以预测哪些结肠癌患者从甲化疗中受益. 在17p或18q位点保持异性表明对辅助化疗有积极反应.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 临床试验 临床试验
背景情况:
- 目前的结肠癌治疗依赖于预后因素,但需要预测标志物来个性化辅助化疗.
- 识别那些从甲中获益最多的患者对于改善临床决策至关重要.
研究的目的:
- 在结肠癌患者中研究分子标记物来预测辅助剂甲的反应.
- 评估在特定位置失去异构性 (LOH) 和微卫星不稳定的预后和预测价值.
主要方法:
- 在英国AXIS试验中对393名结肠癌患者的正常和瘤样本进行分析.
- 在P53,D18S61,D18S851和DP1位置测量LOH和微卫星的不稳定性.
- 预测值使用日志等级测试进行评估;预测值使用奇平方异质性测试 (CSH) 进行评估.
主要成果:
- 在D18S61中失去了异性,预测了甲的益处 (CSH p=0.02),在保持异性患者中益处更大.
- 在17p或18q位点保持异性与显著的化疗效应有关 (危险比为0.45),而没有保留的异性显示没有益处 (危险比为0.91;CSH p=0.039).
结论:
- 在17p或18q位点保持异性预测辅助剂甲在结肠癌中的益处.
- 这些发现支持开发用于瘤学个性化治疗决策的分子标记物.
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