[F]FAPI基于PET/CT的评分系统,用于对IgG4相关疾病的患者进行评估
Donghe Chen1, Danqing Huang2, Chuanyin Sun3
1Department of Nuclear Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
RMD open
|March 4, 2026
概括
F-纤维细胞激活蛋白抑制剂 (FAPI) PET/CT显示出对监测IgG4相关疾病 (IgG4-RD) 的承诺. 一个新的评分系统,FPAS-IgG4,有效地区分了活性和非活性IgG4-RD,有助于疾病分层.
科学领域:
- 核医学成像技术 核医学成像技术
- 放射性药物开发的发展.
- 免疫学 免疫学 免疫学
背景情况:
- F-纤维细胞激活蛋白抑制剂 (FAPI) PET/CT是IgG4相关疾病 (IgG4-RD) 的新兴成像方式.
- 在IgG4-RD评估中,标准化的定量分析和图像评分仍然是挑战.
- 精确监测疾病活动对于有效的IgG4-RD管理至关重要.
研究的目的:
- 确定IgG4-RD中[18F]FAPI吸收的器官特异性参考值.
- 开发和验证一种新的,临床上适用的评分系统 (FPAS-IgG4),用于监测IgG4-RD活性.
- 评估[18F]FAPI PET/CT在区分活性和非活性IgG4-RD中的实用性.
主要方法:
- 对85名IgG4-RD患者和10名健康对照的FAPI PET/CT扫描进行了回顾性分析.
- 基于健康个体数据 (平均值+3 SD) 的器官特定吸收值的定义.
- 使用后勤回归和ROC分析开发IgG4-RD (FPAS-IgG4) 的[F]FAPI PET/CT活动评分.
主要成果:
- [18F]FAPI PET/CT在IgG4-RD检测方面表现出高的诊断性能 (灵敏度为86.2%,特异性为83.3%).
- 与非活性疾病相比,患有活性IgG4-RD的患者的FPAS-IgG4评分显著更高 (5.2±3.0对1.7±1.3,p<0.0001).
- FPAS-IgG4>2获得了93.2%的灵敏度和73.1%的特异性,用于区分活性和非活性IgG4-RD,并且与活性疾病有很强的关联 (p=0.001).
结论:
- [18F]FAPI PET/CT是监测IgG4-RD活性的一个有价值的工具.
- 新的FPAS-IgG4评分系统有助于疾病分层和管理.
- [18F]FAPI PET/CT促进对IgG4-RD活性和治疗反应的客观评估.
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