NCT02784418

Brief Summary

Design: Single center, double-blind, sham-controlled trial that will randomize symptomatic patients with a coronary chronic total occlusion (CTO) to CTO percutaneous coronary intervention (PCI) or a sham procedure. All patients will receive optimal medical therapy. Treatment:CTO PCI, as per standard clinical practice. Control: Patients randomized to sham-procedure will undergo only bilateral arterial access, without angiography or PCI being performed. Secondary Endpoints: (1) Greater improvement in SAQ-7 Summary scores during the entire duration of follow-up (6 months) using a repeated measures analysis (2) Greater improvement in individual components of patients' health status (3) Greater improvement in exercise capacity (4) Similar incidence of major adverse cardiac events (MACE), both peri-procedural and long-term

Trial Health

15
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Timeline
Completed

Started May 2016

Longer than P75 for not_applicable coronary-artery-disease

Status
withdrawn

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2016

Completed
19 days until next milestone

First Submitted

Initial submission to the registry

May 20, 2016

Completed
7 days until next milestone

First Posted

Study publicly available on registry

May 27, 2016

Completed
4.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2020

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2021

Completed
Last Updated

June 7, 2021

Status Verified

June 1, 2021

Enrollment Period

4.6 years

First QC Date

May 20, 2016

Last Update Submit

June 2, 2021

Conditions

Outcome Measures

Primary Outcomes (1)

  • Greater improvement in disease-specific health status, as assessed by the 7-item Seattle Angina Questionnaire (SAQ) Summary Score (SAQ-7, an established measure of health status in patients with coronary artery disease)

    1 month

Secondary Outcomes (7)

  • Greater improvement in SAQ-7 Summary scores during the entire duration of follow-up using a repeated measures analysis

    6 months

  • Greater improvement in individual components of patients' health status, as assessed by the SAQ Physical Limitation, Angina Frequency, and Quality of Life domains of the SAQ-7 score

    Baseline and 6 months

  • Greater improvement in individual components of patients' health status, as assessed by the EuroQol-5D (EQ-5D)

    Baseline and 6 months

  • Greater improvement in individual components of patients' health status, as assessed by the Rose Dyspnea Score

    Baseline and 6 months

  • Greater improvement in exercise capacity, as assessed by treadmill exercise stress

    Prior to and 1 month after index procedure

  • +2 more secondary outcomes

Study Arms (2)

PCI of CTO

ACTIVE COMPARATOR

Intervention: PCI of CTO (Chronic Total Occlusion Percutaneous Coronary Intervention) Chronic Total Occlusion Percutaneous Coronary Intervention (CTO PCI), as per standard clinical practice. Hospitalized overnight after the procedure, with post procedure monitoring practices as per standard of care for PCI. CTO PCI patients will receive blinded clopidogrel 75 mg daily for 6 months.

Procedure: Chronic Total Occlusion Percutaneous Coronary Intervention

Sham Procedure

SHAM COMPARATOR

Intervention: Sham procedure Subjects will be blinded to randomization assignment using a combination of conscious sedation and sensory isolation (e.g., blindfold and noise isolation). Control subjects will only undergo a "Sham procedure", wherein they will undergo bilateral arterial access, without angiography or PCI being performed. Hospitalized overnight after the procedure, with post procedure monitoring practices as per standard of care for PCI. Sham group will receive blinded placebo clopidogrel for 6 months.

Procedure: Sham Procedure

Interventions

Chronic Total Occlusion Percutaneous Coronary Intervention (CTO PCI), as per standard clinical practice

PCI of CTO

Sham Procedure: Bilateral arterial access, without angiography or PCI being performed

Sham Procedure

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age 18 years or greater
  • Willing and able to give informed consent. The patients must be able to comply with study procedures and follow-up.
  • Referred for clinically-indicated CTO PCI
  • Optimal medical therapy (at least two anti-anginal medications at maximum tolerated doses, aspirin, and statin)

You may not qualify if:

  • Coexisting conditions that limit life expectancy to less than 6 months or that could affect a patient's compliance with the protocol
  • Recent (\<7 days) acute myocardial infarction
  • Patient has no symptoms related to the CTO
  • Known allergy to aspirin or clopidogrel
  • Increased risk of bleeding (need for warfarin, oral Xa inhibitor, or thrombin inhibitor administration, recent \[within 30 days\] major bleed, known bleeding diathesis or coagulation disorder)
  • Positive pregnancy test or breast-feeding
  • Chronic kidney disease, defined as serum creatinine \> 2.5 mg/dL
  • Severe peripheral arterial disease limiting exercise capacity

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Publications (6)

  • Brilakis ES, Grantham JA, Rinfret S, Wyman RM, Burke MN, Karmpaliotis D, Lembo N, Pershad A, Kandzari DE, Buller CE, DeMartini T, Lombardi WL, Thompson CA. A percutaneous treatment algorithm for crossing coronary chronic total occlusions. JACC Cardiovasc Interv. 2012 Apr;5(4):367-79. doi: 10.1016/j.jcin.2012.02.006.

    PMID: 22516392BACKGROUND
  • Kahn JK. Angiographic suitability for catheter revascularization of total coronary occlusions in patients from a community hospital setting. Am Heart J. 1993 Sep;126(3 Pt 1):561-4. doi: 10.1016/0002-8703(93)90404-w.

    PMID: 8362709BACKGROUND
  • Christofferson RD, Lehmann KG, Martin GV, Every N, Caldwell JH, Kapadia SR. Effect of chronic total coronary occlusion on treatment strategy. Am J Cardiol. 2005 May 1;95(9):1088-91. doi: 10.1016/j.amjcard.2004.12.065.

    PMID: 15842978BACKGROUND
  • Werner GS, Gitt AK, Zeymer U, Juenger C, Towae F, Wienbergen H, Senges J. Chronic total coronary occlusions in patients with stable angina pectoris: impact on therapy and outcome in present day clinical practice. Clin Res Cardiol. 2009 Jul;98(7):435-41. doi: 10.1007/s00392-009-0013-5. Epub 2009 Mar 18.

    PMID: 19294443BACKGROUND
  • Grantham JA, Jones PG, Cannon L, Spertus JA. Quantifying the early health status benefits of successful chronic total occlusion recanalization: Results from the FlowCardia's Approach to Chronic Total Occlusion Recanalization (FACTOR) Trial. Circ Cardiovasc Qual Outcomes. 2010 May;3(3):284-90. doi: 10.1161/CIRCOUTCOMES.108.825760. Epub 2010 Apr 13.

    PMID: 20388873BACKGROUND
  • Joyal D, Afilalo J, Rinfret S. Effectiveness of recanalization of chronic total occlusions: a systematic review and meta-analysis. Am Heart J. 2010 Jul;160(1):179-87. doi: 10.1016/j.ahj.2010.04.015.

    PMID: 20598990BACKGROUND

MeSH Terms

Conditions

Coronary Artery Disease

Condition Hierarchy (Ancestors)

Coronary DiseaseMyocardial IschemiaHeart DiseasesCardiovascular DiseasesArteriosclerosisArterial Occlusive DiseasesVascular Diseases

Study Officials

  • Emmanouil S Brilakis, MD, PhD

    Minneapolis Heart Institute

    STUDY CHAIR
0

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 20, 2016

First Posted

May 27, 2016

Study Start

May 1, 2016

Primary Completion

December 1, 2020

Study Completion

December 1, 2021

Last Updated

June 7, 2021

Record last verified: 2021-06

Data Sharing

IPD Sharing
Will not share