Screening for Undiagnosed NAFLD and NASH
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 1,006
- 试验地点
- 1
- 主要终点
- Calculate the frequency distribution and severity of steatosis stage (S0, S1, S2, S3) and liver fibrosis stage (F0, F1, F2, F3, F4) in the test population.
研究概览
简要总结
Liver disease (NAFLD) and (NASH) are a rapidly increasing population health threat driven primarily by diet and lifestyle. Fibrotic liver disease, culminating in cirrhosis, is frequently asymptomatic so it is common for a patient to first learn of what is a life threatening condition by being told that they have cirrhosis. Management and treatment of cirrhosis is complex and very costly with the only current cure being a very expensive transplant for end stage liver disease. The SUNN study seeks to perform Fibroscan wellness testing on at risk but asymptomatic self selected patients in the general population to identify disease early and to triage patients toward care or educational tools based upon test results. No personally identifiable information will be collected but demographic and test results will be imported into a registry for data analysis. Results of the study will guide development of screening protocols to identify early stage disease in a wellness screening model.
详细描述
The standard of care published by the American Association for the Study of Liver Disease, (AASLD) do not recommend screening of asymptomatic patients for liver fibrosis so it is common that the first a patient learns of the disease is when they are diagnosed with cirrhosis. Detection at early stages of the disease process is mostly accidental as a result of other procedures.
Research has clearly established the health risks associated with liver disease and comorbidity with a wide range of other illnesses. FibroScan has been shown to be a useful test to identify asymptomatic liver disease.
The FibroScan device (Echosens) works by measuring shear wave velocity. In this technique, a 50 megahertz wave is passed into the liver from a small transducer on the end of an ultrasound probe. The probe also has a transducer on the end that can measure the velocity of the shear wave (in meters per second) as this wave passes through the liver. The shear wave velocity can then be converted into liver stiffness, which is expressed in kilopascals. Essentially, the technology measures the velocity of the sound wave passing through the liver and then converts that measurement into a liver stiffness measurement; the entire process is often referred to as liver ultrasonographic elastography. The procedure is non-invasive and presents no bio-chemical hazards as it uses only well understood ultrasound technology.
The goal of this screening study is to gather FibroScan data from the at-risk but undiagnosed population on a self-selection basis so that incidence rates can be calculated and the economics of a single function screening service can be evaluated.
The objective is to develop evidence based information to determine if noninvasive screening of at risk, comorbid people is feasible with this modality.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Other
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •self selected
排除标准
- •Must be over 17 years old
- •Cannot be pregnant
- •Cannot have any implanted electronic devices
结局指标
主要结局
Calculate the frequency distribution and severity of steatosis stage (S0, S1, S2, S3) and liver fibrosis stage (F0, F1, F2, F3, F4) in the test population.
时间窗: The test period will be six months and results will be reported 3 months after end of testing.
The frequency distribution is the percentage each stage represents of the total. Severity is described by the disease staging. Staging is not measured directly so test scores are normalized to a stage using cutoff values. The results are fat content (steatosis) and liver fibrosis (steatohepatitis) derived from test measurements of CAP score (controlled attenuation parameter) and LSM (liver stiffness measure). These are used to calculate the frequency distribution and staging of steatosis stage (S0, S1, S2, S3) and liver fibrosis stage (F0, F1, F2, F3, F4). The resulting dataset will then be assigned to a disease stage according to the breakpoints below. CAP S0 (\<225) S1 (225-275), S2 (276-300), S3 (\>300) LSM F0 (\<7.0) F1 (7.0-7.4) F2 (7.5-9.9) F3 (10.0-13.9) F4 (\>13.9) The distribution of the normalized dataset will be calculated as the percentage each bracket is of the total number of tests in that subset.
次要结局
- Calculate the frequency distribution and severity of steatosis and liver fibrosis in the test population by ethnicity.(The test period will be six months and results will be reported 3 months after end of testing.)