Randomization of Single vs Multiple Arterial Grafts

NCT ID: NCT03217006

Last Updated: 2025-05-23

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

4300 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-01-07

Study Completion Date

2030-01-01

Brief Summary

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The primary hypothesis of ROMA is that in patients undergoing primary isolated non-emergent coronary artery bypass surgery (CABG), the use of two or more arterial grafts compared to a single arterial graft is associated with a reduction in the composite outcome of death from any cause, any stroke, post discharge myocardial infarction and/or repeat revascularization. The secondary hypothesis is that in patients undergoing primary isolated non-emergent CABG, the use of two or more arterial grafts compared to a single arterial graft is associated with improved survival.

Prospective event-driven unblinded randomized multicenter trial of at least 4,300 subjects enrolled in at least 25 international centers. Patients will be randomized to a single arterial graft (SAG) or multiple arterial grafts (MAG). Patients will be randomized in a 1:1 fashion between the two groups. Permuted block randomization with random blocks stratified by the center and the type of second arterial graft will be used to provide treatment distribution in equal proportion.

Detailed Description

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In the 1980's, it was recognized that long-term survival was enhanced in patients undergoing coronary surgery when the left anterior descending (LAD) was grafted with a left internal thoracic artery (ITA) rather than a saphenous vein (1). This difference was predicated, at least in part, due to greater and more durable patency of the left ITA compared to an increased early occlusion rate and later progressive atherosclerosis of saphenous vein grafts (SVG) (2).

For more than 20 years it has generally been accepted that patients who receive multiple arterial grafts (AGs) at the time of coronary artery bypass surgery (CABG) have increased postoperative survival compared to those who receive only one AG, especially over the long term (3-5). The current United States and European Guidelines encourage the use of AGs in patients with a long life expectancy (6, 7). Last year, a position paper from the Society of Thoracic Surgeons strongly recommended a wider use of AGs (8).

The putative mechanism underlying the AG hypothesis is greater patency. In line with the original findings of improved LAD graft patency with ITA vs. SVG, data from randomized control trials (RCTs) as well as observational studies and a network meta-analysis (9) have demonstrated that the patency of the RA, as well as the right ITA, exceed that of a SVG, providing mechanistic basis to support the AG hypothesis.

ROMA is a two arm event driven randomized multi-centre trial aimed at evaluating the impact of the use of one ITA vs two or more AGs for CABG on a composite of death from any cause, any stroke, post discharge myocardial infarction and/or repeat revascularization. The trial is powered to detect a 20% relative reduction in the primary outcome with 90% power at 5% alpha.

The primary aim is to conduct a multicenter international randomized control trial to test the hypothesis that the use of a two or more AGs compared to a single arterial graft is associated with a reduction in the composite outcome of death from any cause, any stroke, post discharge myocardial infarction and/or repeat revascularization.

The secondary aim is to conduct a multicenter international randomized control trial to test the hypothesis that the use of two or more AGs compared to a single arterial graft is associated with improved survival.

Conditions

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Coronary Artery Disease Heart Diseases

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Patients undergoing coronary artery bypass surgery will be in one of two groups. One group will receive a single arterial graft and the second group will receive two or more arterial grafts.
Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors
The endpoint assessors will be blinded to treatment allocation (PROBE).

Study Groups

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Single Arterial Group

Patients in this group will receive a single arterial graft which will be the left internal thoracic artery. Additional grafts used in this group will all be venous grafts.

Group Type EXPERIMENTAL

Single arterial graft

Intervention Type PROCEDURE

This interventions consists of patients receiving the left internal thoracic artery to the left anterior descending coronary artery of the heart. In addition to the left internal thoracic artery patients will receive venous grafts for all additional grafting.

Multiple Arterial Group

Patients in the group will receive multiple arterial grafts. All patients will receive at least two arterial grafts, the left internal thoracic artery with the addition of either the right internal thoracic artery or the radial artery as the second conduit. Some patients may receive additional arterial grafts consisting of the radial artery, the right internal thoracic artery, or the right gastroepiploic artery.

Group Type EXPERIMENTAL

Multiple arterial grafting

Intervention Type PROCEDURE

This intervention consists of the patient receiving the left internal thoracic artery to the left anterior descending coronary artery of the heart. The second arterial graft (right internal thoracic artery or radial artery) will be directed to the major branch of the circumflex. Additional grafts will include saphenous veins or arterial conduits.

Interventions

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Single arterial graft

This interventions consists of patients receiving the left internal thoracic artery to the left anterior descending coronary artery of the heart. In addition to the left internal thoracic artery patients will receive venous grafts for all additional grafting.

Intervention Type PROCEDURE

Multiple arterial grafting

This intervention consists of the patient receiving the left internal thoracic artery to the left anterior descending coronary artery of the heart. The second arterial graft (right internal thoracic artery or radial artery) will be directed to the major branch of the circumflex. Additional grafts will include saphenous veins or arterial conduits.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Primary isolated CABG patients with disease of the left main coronary artery and/or of the left anterior descending and the circumflex coronary system with or without disease of the right coronary artery.

Exclusion Criteria

* Age \> 70 years
* Single graft
* Emergency operation
* Evolving myocardial infarction within 48 hours of surgery
* Left ventricular ejection fraction of \< 35%
* Any concomitant cardiac or non-cardiac procedure
* Previous cardiac surgery
* Preoperative severe end-organ dysfunction (dialysis, liver failure, respiratory failure), cancer or any co-morbidity that reduce life expectancy to less than 5 years.
* Inability to use the saphenous vein or to use both radial and right internal thoracic arteries
* Anticipated need for coronary thrombo-endarterectomy
* Planned hybrid revascularization
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Heart, Lung, and Blood Institute (NHLBI)

NIH

Sponsor Role collaborator

Canadian Institutes of Health Research (CIHR)

OTHER_GOV

Sponsor Role collaborator

Weill Medical College of Cornell University

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Mario Gaudino, MD

Role: PRINCIPAL_INVESTIGATOR

Weill Medical College of Cornell University

Stephen Fremes, MD

Role: PRINCIPAL_INVESTIGATOR

Sunnybrook Health Sciences Centre

Locations

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University of Colorado

Boulder, Colorado, United States

Site Status

Baystate Health

Springfield, Massachusetts, United States

Site Status

Nebraska Heart Hospital

Lincoln, Nebraska, United States

Site Status

University of Nebraska Medical Center

Omaha, Nebraska, United States

Site Status

NewYork-Presbyterian Brooklyn Methodist Hospital

Brooklyn, New York, United States

Site Status

Icahn School of Medicine, Mount Sinai

New York, New York, United States

Site Status

Weil Cornell Medical College Department of Cardiothoracic Surgery

New York, New York, United States

Site Status

Lenox Hill Hospital (Northwell)

New York, New York, United States

Site Status

NewYork-Presbyterian Queens

New York, New York, United States

Site Status

Cleveland Clinic Foundation

Cleveland, Ohio, United States

Site Status

Allegheny General Hospital (Cardiovascular Institute)

Pittsburgh, Pennsylvania, United States

Site Status

Innsbruck (Medical University) Austria

Innsbruck, , Austria

Site Status

Krankenhaus Nord Vienna North Hospital

Vienna, , Austria

Site Status

MU Vienna Austria

Vienna, , Austria

Site Status

Federal University of Sao Paulo

São Paulo, , Brazil

Site Status

Hamilton General Hospital

Hamilton, , Canada

Site Status

London Health Sciences Ontario Canada

London, , Canada

Site Status

University Hospital of Montreal (CHUM)

Montreal, , Canada

Site Status

University of Ottawa Heart Institute Canada

Ottawa, , Canada

Site Status

Royal Victoria Hospital (McGill)

Québec, , Canada

Site Status

Universite Laval Quebec (CRIUCPQ) Canada

Québec, , Canada

Site Status

Sunnybrook Health Sciences Centre

Toronto, , Canada

Site Status

Toronto General Hospital

Toronto, , Canada

Site Status

St. Boniface General Hospital / WHRA

Winnipeg, , Canada

Site Status

Fuwai Hospital

Beijing, , China

Site Status

Jilin Heart Hospital

Changchun, , China

Site Status

Ruijin Hospital Shanghai Jiao Tong University School of Medicine

Shanghai, , China

Site Status

National Taiwan University Hospital

Taiwan, , China

Site Status

Teda Hospital (TICH)

Tianjin, , China

Site Status

University Hospital Dubrava

Zagreb, , Croatia

Site Status

General University Hospital, Prague

Prague, , Czechia

Site Status

Duisburg Heart Center

Duisburg, , Germany

Site Status

Essen University

Duisburg, , Germany

Site Status

Düsseldorf University

Düsseldorf, , Germany

Site Status

University Hospital Erlangen

Erlangen, , Germany

Site Status

Giessen Hospital

Giessen, , Germany

Site Status

University Medical Center of Goettingen

Göttingen, , Germany

Site Status

Jena University Hospital

Jena, , Germany

Site Status

Heart Center (Herzzentrum)

Leipzig, , Germany

Site Status

HDZ NRW Bad

Oeynhausen, , Germany

Site Status

Robert-Bosch-Hospital

Stuttgart, , Germany

Site Status

Krankenhaus der Barmherzigen Brüder Trier

Trier, , Germany

Site Status

Anthea Hospital

Bari, , Italy

Site Status

Fondazione Poliambulanza

Brescia, , Italy

Site Status

Maria Cecilia Hospital GVM

Cotignola, , Italy

Site Status

Universita' Cattolica del Sacro Cuore

Roma, , Italy

Site Status

European Hospital

Rome, , Italy

Site Status

Ospedale Le Molinette

Torino, , Italy

Site Status

Saitama Medical University

Saitama, , Japan

Site Status

MUMC Maastricht (University Medical Centre)

Maastricht, , Netherlands

Site Status

Medical University of Silesia (Katowice)

Katowice, , Poland

Site Status

Hospitalar de Lisboa Central

Capuchos, , Portugal

Site Status

University Hospital (Praceta Mota Pinto)

Coimbra, , Portugal

Site Status

Centro Hospitalar e Universitário São João

Porto, , Portugal

Site Status

Dedinje Cardiovascular Institute

Belgrade, , Serbia

Site Status

National University of Singapore

Singapore, , Singapore

Site Status

Severance Cardiovascular Hospital, Yonsei University College of Medicine

Sinchŏn-dong, , South Korea

Site Status

Hospital Univeritario Del Vinalopo

Alicante, , Spain

Site Status

Hospital Clinic de Barcelona (ICCV)

Barcelona, , Spain

Site Status

Countries

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United States Austria Brazil Canada China Croatia Czechia Germany Italy Japan Netherlands Poland Portugal Serbia Singapore South Korea Spain

References

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Other Identifiers

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1R01HL152021-01

Identifier Type: NIH

Identifier Source: secondary_id

View Link

1703018094

Identifier Type: -

Identifier Source: org_study_id

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