Alberta Lung Cancer Screening Program
试验速览
- 阶段
- 不适用
- 入组人数
- 800
- 试验地点
- 3
- 主要终点
- Comparison of screening enrollment criteria (Risk prediction model (RPM) vs. NLST criteria)
研究概览
简要总结
Lung cancer is the leading cause of cancer death in North America and in the world. The vast majority of lung cancers are associated with cigarette smoking. Unfortunately, the majority of lung cancers are detected at an advanced stage when they have a very poor prognosis. A substantial amount of data has been reported on low-dose computed tomography (LDCT) screening. Yet endorsement of lung cancer screening has not been universal because of outstanding concerns which need to be addressed. Our study will aim to screen at risk Albertans for lung cancer with LDCT scan at baseline, year 1 and year 2 while attempting to fill some knowledge gaps on this topic.
详细描述
Lung cancer is the leading cause of cancer death in North America and in the world. The vast majority of lung cancers are associated with cigarette smoking. Lung cancer incidence and mortality rates are similar because lung cancer is a highly fatal disease. Unfortunately, the majority of lung cancers are detected at an advanced stage when they have a very poor prognosis. A substantial amount of data has been reported on low-dose computed tomography (LDCT) screening. The results of the National Lung Screening Trial (NLST) showed a 20% reduction in mortality from lung cancer with LDCT screening in addition to a 6.7% decrease in all-cause mortality, the first ever screening intervention to demonstrate an improvement in this latter outcome. Yet endorsement of lung cancer screening has not been universal. Although the NLST results are encouraging, more investigation is needed.
The objectives of this study are to prospectively compare the performance of a lung cancer risk prediction model (RPM) vs. NLST criteria to inform optimal inclusion criteria for a clinical screening program; to prospectively compare a novel screening based nodule malignancy probability calculation which has been developed in the Pan-Canadian Early Detection of Lung Cancer study vs. NLST criteria; to complete a randomized controlled trial as a substudy comparing an intensive tobacco cessation counseling program to a usual care arm for subjects with ongoing tobacco use; to perform a cost analysis evaluating the incremental costs associated with LDCT screening for lung cancer compared to no screening; to determine the average cost associated with incidental findings, false positive findings and lung cancers found during the screening period; and to compare cost implications of both screening enrollment criteria.
The backbone of this research project will be the screening of at risk individuals for lung cancer with LDCT scan. Eight hundred at risk Albertans will be screened at baseline, year 1 and year 2. Additional clinical LDCT or other investigations may result from findings on the study CT scans.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Single Group
- 主要目的
- Screening
- 盲法
- None
入排标准
- 年龄范围
- 55 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Subjects between the ages of 55 and 80 with a risk prediction model (RPM) ≥1.5% (≥ 1.5% risk of lung cancer over 6 years) OR NLST criteria (age 55-74; ≥ 30 pack-year smoking history; ongoing smoking or quit within 15 years).
- •Ability to provide informed consent and participate in study procedures.
排除标准
- •Any medical condition, such as severe heart disease (e.g. unstable angina, chronic congestive heart failure), severe lung disease or lung disease requiring supplemental oxygen that in the opinion of the physician unlikely to benefit from screening due to shortened life-expectancy from the co-morbidities or inability to tolerate diagnosis and treatment of a screen detected abnormality. European Cooperative Oncology Group performance status >
- •History of lung cancer.
- •Have had other cancer or treatment for cancer within the past 5 years with the exception of the following cancers: non-melanomatous skin cancer, localized prostate cancer, carcinoma in situ (CIS) of the cervix, or superficial bladder cancer. Treatment of the exceptions must have ended > 6 months before registration into this study.
- •Pregnancy.
- •Hemoptysis in past 12 months.
- •Unexplained weight loss >15 pounds / 7kg in past 12 months.
- •Unwilling to have a LDCT of chest.
- •Unwilling to sign a consent.
- •Have had a CT scan of the chest in the last 2 years.
结局指标
主要结局
Comparison of screening enrollment criteria (Risk prediction model (RPM) vs. NLST criteria)
时间窗: 5 years
The proportion of individuals selected by RPM or NLST will be calculated as the number of subjects qualifying and consenting to the screening intervention / total number of subjects enrolled with either criteria. Superiority of the risk prediction model over NLST criteria will be considered established if it identifies at least as many cases of lung cancer as the NLST while sampling fewer individuals.
Randomized trial of smoking cessation intervention in screened individuals (smoking status [smoking rates assessed via questionnaire and abstinence confirmed by saliva nicotine or exhaled carbon minoxide])
时间窗: 3 years
The primary study endpoint will be an assessment of smoking status at 12 months following randomization. Smoking rates will be assessed via phone questionnaire and abstinence confirmed by saliva nicotine test or exhaled carbon monoxide in subjects using nicotine replacement therapies (to avoid false positive nicotine test).
次要结局
- Evaluation of nodule risk calculator(3 years)
- Health Economics Analysis (healthcare payer and all direct health-care related cost)(4 years)
研究者
Dr. Alain Tremblay
Professor
University of Calgary