胰腺管腺癌的诊断预测模型的开发和验证: VAPOR 1,前性多中心病例对照研究的协议
Caoimhe M Walsh1, James Murray2, Ivan Laponogov1
1Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK.
BMJ open
|August 27, 2025
概括
这项研究开发了一种非侵入性呼吸测试,以早期检测胰腺癌 (PDAC). 呼吸测试旨在帮助医生识别需要紧急转诊的患者,改善这种致命疾病的结果.
科学领域:
- 癌症学
- 生物化学
- 医疗诊断
背景情况:
- 胰腺管腺癌 (PDAC) 的患者结局不佳,通常在晚期诊断.
- 早期检测对于改善PDAC治疗选择和生存率至关重要.
- 目前的诊断途径可能会错过早期PDAC的患者.
研究的目的:
- 开发和验证PDAC早期检测的临床预测模型.
- 使用非侵入性呼吸测试来识别PDAC患者.
- 帮助全科医生对患有PDAC症状的患者进行分类.
主要方法:
- 涉及771名参与者的前性多中心病例对照研究 (VAPOR 1).
- 招募PDAC患者,良性胰腺对照和健康对照.
- 使用气体染色体质谱分析呼吸样本,以确定挥发性有机化合物 (VOC).
- 使用统计和机器学习方法开发和内部验证临床预测模型.
主要成果:
- 探索特定的VOC与PDAC存在之间的关系.
- 基于呼吸测试分析的预测模型的开发.
- 对模型在识别PDAC方面的性能进行内部验证.
结论:
- 通过非侵入性呼吸测试可以早期检测PDAC.
- 开发的临床预测模型可以帮助患者分类.
- 需要进一步验证,以确认该测试在改善PDAC结果方面的临床效用.
相关概念视频
01:27Acute Pancreatitis I: Introduction
Pancreatitis is inflammation of the pancreas, an organ located behind the stomach. It can be either acute or chronic.
Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
The causes of acute pancreatitis include:
Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
The causes of acute pancreatitis include:
01:25Acute Pancreatitis I: Introduction
Acute pancreatitis is the sudden inflammation of the pancreas caused by the early activation of digestive enzymes, leading to the autodigestion of pancreatic tissue. This results in local inflammation and, in severe cases, systemic complications.EtiologyUnderstanding the underlying causes is crucial, as identifying the etiology guides treatment and anticipates complications. Acute pancreatitis can be triggered by various factors, typically grouped into the following clinical categories.Biliary...