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2011-09
2019-12
2019-12
520
NCT01465425
American College of Radiology Imaging Network
American College of Radiology Imaging Network
OBSERVATIONAL
Extracolonic Findings on Computed Tomography (CT) Colonography
The ACRIN 7151 trial will use medical records abstraction data from participants with extracolonic findings (ECFs) reported from the ACRIN 6664 National CT Colonography Trial to: 1) measure incidence of diagnostic imaging, hospitalization, and interventional procedures associated with ECFs reported on computed tomography colonography (CTC), delineated by type of ECF; 2) determine potential predictors of follow-up diagnostic imaging, hospitalization, and interventional procedures, delineated by type of ECF; and 3) evaluate the clinical/pathologic diagnoses associated with indeterminate but potentially significant ECFs. These data can be used to incorporate ECFs into existing models on the cost-effectiveness of CTC in colorectal cancer screening and can potentially be used to develop guidelines for the reporting and management of ECFs.
The original ACRIN 6664 National CT Colonography Trial included 15 participating sites and a total study data set of 2531 participants. The target study data set for the ACRIN 7151 trial is 520 participants, assigned to one of three cohorts: an E3/E4 Case Group (n = 141) excluding pulmonary nodules, an E3/E4 Pulmonary Nodules Case Group (n = 119), and an E1 Control Group (n = 260) (see Section 8.6). Medical records will be collected by the site from their institutions and from the primary care provider identified by the participant during the ACRIN 6664 trial. Initial record collection will comprise the six months following CTC for all cohorts. Additional medical record collection (from other primary care providers, specialists, and hospitals, and for extended time periods) may be necessary for primary endpoint determination. ECFs are categorized according to the original radiology read of the CTC during the ACRIN 6664 trial.
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
| Study Registration Dates | Results Reporting Dates | Study Record Updates |
|---|---|---|
2011-10-31 | N/A | 2018-10-09 |
2011-11-03 | N/A | 2018-10-11 |
2011-11-04 | N/A | 2018-10 |
This section provides details of the study plan, including how the study is designed and what the study is measuring.
Primary Purpose:
N/A
Allocation:
N/A
Interventional Model:
N/A
Masking:
N/A
Arms and Interventions
| Participant Group/Arm | Intervention/Treatment |
|---|---|
| : E3/E4 Case Group The Case Group will target consenting 141 participants from the cases with indeterminate but potentially significant findings (E3/E4s) other than pulmonary nodules. | |
| : Pulmonary Nodules Case Group The Pulmonary Nodules Case Group will comprise 119 cases with E3/E4 ECFs characterized as pulmonary nodules. | |
| : E1 Control Group The E1 Control Group will be drawn from the 866 E1 ECF cases from ACRIN 6664 to create a cohort of 260 E1 ECF cases. The Control Group for comparison with the Case Group and the Pulmonary Nodules Case Group will be selected at the Biostatistics and Data M |
| Primary Outcome Measures | Measure Description | Time Frame |
|---|---|---|
| Rates of Follow Up Imaging, Hospitalization, Intervention | Estimate the rates of follow-up diagnostic imaging, hospitalization, and interventional procedures commonly associated with ECFs within six months of receiving CTC for all three cohorts (E3/E4, pulmonary nodules, and E1). Compare the rates of medical utilization among participants with indeterminate but potentially significant ECFs (E3/E4s) and participants with pulmonary nodules, to participants with no ECFs (E1s). | 6 Months, 15 Months |
| Secondary Outcome Measures | Measure Description | Time Frame |
|---|---|---|
| Characterize Outcomes | Categorize the outcome of potentially clinically significant findings detected by CTC into resolved and unresolved, significant and insignificant at six-months post-examination based on medical record abstraction among participants with indeterminate but potentially clinically significant ECFs (E3/E4s) and participants with pulmonary nodules. Estimate the relationship between participant characteristics and clinically significant findings for participants with E3/E4 ECFs and participants with pulmonary nodules. | 6 Months |
| Estimate Relative Risk | Estimate the relative risk of confirmed clinically significant findings within six months of receiving CTC among participants with indeterminate but potentially significant ECFs (E3/E4s) and participants with pulmonary nodules, compared with participants with no ECFs (E1s). | 6 Months |
| Determine Potential Predictors | Determine potential predictors associated with increased likelihood of receiving follow-up diagnostic imaging, hospitalization, and interventional procedures within six months of receiving CTC among participants with indeterminate but potentially significant ECFs (E3/E4s), including participants with pulmonary nodules. | 6 Months |
| Estimate Differences in Cost | Estimate differences in cost associated with common expected follow-up diagnostic imaging, hospitalizations, and interventional procedures within six months of receiving CTC among participants with indeterminate but potentially significant ECFs (E3/E4s) and participants with pulmonary nodules, compared with participants with no ECFs (E1s). | 6 Months |
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person’s general health condition or prior treatments.
Ages Eligible for Study:
ALL
Sexes Eligible for Study:
50 Years
Accepts Healthy Volunteers:
This is where you will find people and organizations involved with this study.
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
