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概括

基线总瘤SUVmean在PSMA PET/CT上是接受Lu-PSMA治疗的转移性割抵抗性前列腺癌患者治疗成功的强有力的预测指标. 较高的SUV平均值与改善的无进展和整体存活率相关,有助于患者选择.

关键词:
177Lu-PSMAMA 没有任何问题.在PSMA PET/CT中使用.SUV意味着SUV,SUV意味着SUV.图像成像生物标志物生物标志物转移性割抵抗性前列腺癌

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科学领域:

  • 核医学就是核医学.
  • 在瘤学瘤学.
  • 放射性药物 放射性药物 放射性药物

背景情况:

  • 前列腺特异性膜抗原 (PSMA) PET/CT指标正在探索用于预测转移性割抵抗性前列腺癌 (mCRPC) 中对177Lu-PSMA治疗的反应.
  • 在美国扩展访问计划队列中评估这些指标对于现实应用至关重要.

研究的目的:

  • 评估和比较治疗前视觉和定量PSMA PET/CT指标的预后性能.
  • 确定这些指标是否预测PSA50等结果,PSA无进展生存率 (PFS) 和总生存率 (OS) 在mCRPC患者治疗177Lu-PSMA.

主要方法:

  • 在扩大访问计划中,美国3个机构的88名mCRPC患者的回顾性分析.
  • 评估视觉 (例如,瘤与唾液腺的比) 和定量指标 (例如,总瘤SUV平均值,总病变吸收量).
  • 分析了与PSA50,PSA PFS和OS的关联,使用单变量/多变量模型和一致性指数.

主要成果:

  • 随访时间中位数为36.1个月;PSA50率为43%,PSA PFS中位数为4.5个月,OS中位数为12.5个月.
  • 总瘤SUV平均值显示PSA50的预测精度最高 (AUC,0.81).
  • 在多变量分析中,较高的总瘤SUV平均值独立预测了PSA PFS (HR,0.58) 和OS (HR,0.54) 的改善,单独优于临床变量.

结论:

  • 基线总瘤SUV平均值在PSMA PET/CT上提供了超出临床因素的独立预后价值.
  • 总瘤SUVmean可以作为患者选择和177Lu-PSMA疗法个性化治疗的生物标志物.
  • 这一指标有助于优化mCRPC患者的治疗策略.