在定量高分辨率计算机断层扫描指标和纤维性疾病中的肺功能变化之间存在微弱或没有相关性
Yixuan Zou1, Xuefeng Hou1, Neha Anegondi2
1Product Development Data Sciences, Genentech, Inc., South San Francisco, CA, USA.
ERJ open research
|October 23, 2023
概括
定量高分辨率计算机断层扫描 (HRCT) 度量显示,系统性硬化症 (SSc) 和异常性肺纤维化 (IPF) 患者的强迫生命能力 (FVC) 降低与虚弱和不一致的相关性,限制了他们的预后价值.
科学领域:
- 肺部医学 肺部医学
- 放射学 放射学是一门学科.
- 医学成像分析 医学成像分析
背景情况:
- 系统性硬化症 (SSc) 和异常性肺纤维化 (IPF) 是纤维化肺部疾病,其进展率可变.
- 识别患有快速强迫生命能力 (FVC) 衰退风险的患者对于临床试验设计和患者管理至关重要.
- 定量成像生物标志物可以提供对疾病进展的预后见解.
研究的目的:
- 评估从Imbio肺部纹理分析 (LTA) 工具中获得的定量高分辨率计算机断层扫描 (HRCT) 度量的预后价值.
- 确定这些HRCT指标是否可以预测SSc和IPF患者的FVC下降率.
主要方法:
- 在三项临床试验 (2015-2021) 中,对SSc和IPF患者的HRCT数据进行了回顾性分析.
- 使用Imbio LTA工具从HRCT扫描中提取定量纹理特征.
- 评估了HRCT指标和FVC斜率之间的关联,使用斯皮尔曼相关性和线性回归,对临床共变量进行调整.
主要成果:
- 总共分析了271名SSc和IPF患者.
- 在SSc患者的特定HRCT指标 (例如,磨砂玻璃的程度,间歇性肺病量化) 和FVC斜率之间观察到弱到中度的相关性.
- IPF患者的相关性通常很弱 (<0.2),HRCT指标的增量预后值在调整后在研究臂中是边际的和不一致的.
结论:
- 通过Imbio LTA工具获得的定量HRCT指标显示,在研究的SSc和IPF群体中,与FVC斜率的相关性较弱和不一致.
- 这些发现表明,评估的HRCT指标作为这些疾病中FVC下降的独立预测指标的有用性有限.
- 可能需要进一步的研究来确定更强大的成像生物标志物来预测SSc和IPF的疾病进展.
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