在多民族的美国退伍军人队列中预测前列腺癌特异性死亡率的Prostatype® P-score的验证
Alexandra Mack1, Trung Duong Tran2, Emelie Berglund3
1Department of Urology, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA. alexandra.mack@cshs.org.
Prostate cancer and prostatic diseases
|January 7, 2026
概括
Prostatype® 测试使用干细胞基因表达和临床数据准确预测前列腺癌死亡率. 这种经过验证的工具有助于新诊断的患者的风险分层,特别是中等风险患者.
科学领域:
- 在瘤学瘤学.
- 分子诊断学 分子诊断学
- 生物标志物研究 生物标志物研究
背景情况:
- Prostatype®测试评估干细胞基因 (IGFBP3,F3,VGLL3) 与PSA,阶段和等级相结合的表达,以产生P分数.
- 之前的研究表明,P-score在预测局部PC的前列腺癌 (PC) 特定死亡率 (PCSM) 中的有效性.
- 这项研究验证了P-score在美国退伍军人的大型多民族队列中的表现.
研究的目的:
- 评估P-score在多元化的退伍军人群中预测PCSM的能力.
- 评估临床变量与PCSM预测的P-score结合时的附加值.
- 为了确定P-score在风险分层中介风险PC患者中的有用性.
主要方法:
- 分析了新诊断的PC患者的形式氨固化嵌入式 (FFPE) 活检核.
- 提取了RNA,并对特定基因 (IGFBP3,F3,VGLL3) 和对照基因 (GAPDH) 进行了定量RT-qPCR.
- 通过将基因表达数据与临床信息整合而生成P分数;使用c指数,考克斯模型,细灰模型和决策曲线分析 (DCA) 评估性能.
主要成果:
- 较高的P-分数与增加的PCSM风险显著相关 (HR=1.48,p<0.001),具有很高的预测准确性 (c指数=0.87).
- 纳入额外的临床变量只能在预测准确度上取得微不足道的改善.
- 决策曲线分析显示,P-score在预测5%至50%的PCSM风险方面具有临床有用性;该得分在中等风险患者中也显著 (HR=1.43,p=0.009).
结论:
- 在美国退伍军人队伍中,P-score有效地预测了PCSM,证实了它在不同人群中的实用性.
- P-score提供了一种强大而快速的风险分层方法,可能最大限度地减少过度处理.
- 它在中等风险患者中的准确性凸显了它在一个对精确风险评估有重大未满足需求的群体中的价值.
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