ROOBY Trial Follow-up Extension
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|ClinicalTrials.gov Identifier: NCT01924442|
Recruitment Status : Completed
First Posted : August 16, 2013
Results First Posted : June 7, 2019
Last Update Posted : June 7, 2019
|Condition or disease|
|All Cause Mortality MACE|
A debate is ongoing as to the potential longer-term benefits of off-pump versus on-pump treatments. A recent meta-analysis summarized 12 randomized trials with follow-up extending beyond 1-year; with a significant increase documented in the late off-pump repeat revascularization and mortality rates. As a very large single center study with longer-term follow-up, a Beijing hospital study reported that their early minor advantages identified for off-pump surgery (n = 3,266) were offset at 4.5 years by an increased risk for cardiac death, acute MI and repeat revascularization as compared to an on-pump (n = 3,399) approach. The OCTOPUS study (a multi-center randomized trial based in the Netherlands) concluded that there was no difference in off-pump versus on-pump procedures for 5-year cardiac outcomes. However, OCTOPUS critics raised questions as to whether this study of only 281 low-risk patients was adequately powered to detect 5-year clinically relevant differences.
The ROOBY trial represents the only US-based, multi-center trial that will be adequately powered to detect clinically relevant, statistically significant differences in these long-term MACE (i.e., all cause mortality, non-fatal myocardial infarction, and/or repeat revascularization) outcomes. Recognized as a landmark study, ROOBY has resulted in important contributions including 10 manuscripts, 2 letters to the editor, and an invited editorial. As of October 11, 2012, over 182 manuscripts (not including any self-citations) had referenced the ROOBY trial's original 2009 publication. Most recently, the ROOBY trial was identified in the 2012 Almanac of adult cardiac surgery, where the national society journals present selected research that has driven recent clinical care advances. Additionally, ROOBY was judged independently by the March 2012 Cochrane systematic review as one of only three, multi-center trials that had been conducted to-date with a low risk of bias.
The original ROOBY trial's enrollment was initiated in February 2002 and ended in June 2007. Given the passage of time, it is now possible to obtain at least 5 years of follow-up to identify these critically important longer-term MACE endpoints for all ROOBY patients. For the earliest ROOBY patients enrolled, their MACE outcomes for up to (and potentially beyond) 10 years post-CABG may be assessed. These MACE endpoints will be ascertained using a combination of VA and non-VA database extracts as well as by chart reviews. In summary, the CSP 517-FS proposed study represents the first, large scale, US-based, multi-center, randomized, controlled off-pump versus on-pump trial that will have adequate power to assess major adverse cardiovascular events beyond 5 years - comparing the long-term effectiveness of these procedures to guide future adult cardiac surgical clinical decision-making processes.
The Department of Veterans Affairs "Randomized On/off Bypass" (ROOBY) Trial (CSP#517; NCT00032630) was funded in 2001.
|Study Type :||Observational|
|Actual Enrollment :||2203 participants|
|Official Title:||CSP #517-FS - ROOBY Trial Extension (Randomized on Pump and Off Pump Bypass Surgery: Long Term Follow-up)|
|Actual Study Start Date :||October 1, 2013|
|Actual Primary Completion Date :||September 1, 2016|
|Actual Study Completion Date :||September 30, 2018|
Cardiac bypass using Heart Lung Machine
Cardiac bypass surgery on beating heart
- Long-term All Cause Mortality Between On-pump and Off-pump Patients. [ Time Frame: 5 Years ]Five-year mortality was initially assessed by matching the participants in the follow-up study to data in the VA Vital Status File and the National Death Index, which provided cause-of-death codes according to the International Classification of Diseases, 10th Revision.
- Long-term Major Adverse Cardiovascular Event (MACE) Between On-pump and Off-pump Patients [ Time Frame: 5 years ]Secondary outcomes included the 5-year rates of death from cardiac causes, repeat revascularization and nonfatal myocardial infarction.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01924442
|United States, New York|
|Northport VA Medical Center, Northport, NY|
|Northport, New York, United States, 11768|
|Study Chair:||Annie Laurie Shroyer, PhD MHSA||Northport VA Medical Center, Northport, NY|