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Cardiac Allograft VasculopathySTOPCAVNCT01305395

Strategies To Prevent Cardiac Allograft Vasculopathy Related Events in Heart Transplant Recipients

A study testing Sirolimus in people with Cardiac Allograft Vasculopathy, run by University of Minnesota at 1 site in United States.

Withdrawn

Withdrawn. The study stopped before anyone enrolled.

Official record
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Trial summary

1. Early initiation of sirolimus will prevent or delay the development of intimal thickening and subsequent graft failure. 2. Treatment guided by the development of cardiac allograft vasculopathy (CAV) on intravascular ultrasound (IVUS) will be more effective in delaying progression of CAV compared to treatment guided… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Cardiac Allograft Vasculopathy
What is being tested?
Sirolimus
Could I receive a placebo?
No, everyone receives an active treatment
How many people
0 participants
Where
1 siteUnited States
Study dates
Nov 2010to Jan 2015
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • For Prospective Arm:
  • 18 years or older
  • Successful orthotropic heart transplant within 6 months of enrollment
  • For Retrospective Arm:
  • 18 years or older
  • Successful orthotropic heart transplant within 6 months to 3 years of enrolment
  • Less than moderate CAV by angiogram or IVUS

Who cannot join

  • For Prospective Arm:
  • Greater than minimal baseline coronary disease
  • Chronic kidney disease with creatinine >2mg/dl
  • Baseline (1 month) ejection fraction < 50%
  • IV contrast allergy
  • Rejection within 3 months of enrollment
Show all 16Show fewer
  • Sensitivity to sirolimus or its derivatives
  • Prior sirolimus use
  • For Retrospective Arm:
  • Significant baseline (one month) coronary artery disease (>50% in one or more vessels by angiogram or MIT >0.5 by IVUS)
  • Chronic kidney disease with creatinine >2mg/dl
  • Baseline (1 month) ejection fraction < 50%
  • IV contrast allergy
  • Rejection within 3 months prior to enrollment
  • Sensitivity to sirolimus or its derivatives
  • Prior sirolimus use

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Cardiology Division, University of Minnesota

    Minneapolis, Minnesota, 55455

Other trials in United States

About this study

Official title: Early Vs Late Sirolimus-Initiation Strategies To Prevent Cardiac Allograft Vasculopathy Related Events in Heart Transplant Recipients

  1. Early initiation of sirolimus will prevent or delay the development of intimal thickening and subsequent graft failure.
  2. Treatment guided by the development of cardiac allograft vasculopathy (CAV) on intravascular ultrasound (IVUS) will be more effective in delaying progression of CAV compared to treatment guided by angiography.
  3. Prevention of the development and progression of intimal thickness on IVUS will prevent the development of heart failure, graft dysfunction, and cardiovascular death related to CAV.
  4. Small artery elasticity predicts progression of cardiac allograft vasculopathy and is modified by sirolimus
  5. Patients who have no progression of CAV will have favorable improvement in biomarkers and endothelial cells compared to patients who have progression of CAV
Read the detailed description

Proliferation signal inhibitors (PSIs), sirolimus and everolimus, have been demonstrated to be effective immunosuppressants and delay the progression of cardiac allograft vasculopathy. To date, there are no prospective studies designed to evaluate the potential use of PSIs as a primary immunosuppressant in the prevention of cardiac allograft vasculopathy. The goals of our study are to compare primary vs. secondary preventive strategies and to evaluate the role of intravascular ultrasound compared to coronary angiogram in diagnosing CAV and preventing CAV-related events. The specific aims of the study are:

  1. To evaluate the effect of primary vs. secondary initiation of sirolimus on the development of significant coronary artery (> 70% angiographic stenosis, Mean intimal thickness (MIT) 0.5mm or greater, IVUS calculated coronary cross sectional area of < 4mm2 / <6mm2 for mid LAD/Left Maim (LM), < 0.75 fractional flow reserve (FFR) lesion associated with a positive stress test), change in global left ventricle (LV) function, incidence of rejection episodes, and hospitalizations at 1, 2, 3, and 4 years.
  2. To determine the effect of IVUS-guided initiation of sirolimus on short-term and long-term outcomes vs. angiogram-guided initiation of sirolimus
  3. To determine whether prevention of progression of CAV diagnosed by IVUS prevents graft dysfunction or death related to CAV or heart failure.
  4. To assess the correlation between peripheral small artery elasticity, peripheral biomarkers, and endothelial cells, and development of cardiac allograft vasculopathy in order to develop a strategy for determining risk of progression and monitoring treatment.

The study has a prospective and a retrospective arm

Prospective Arm Design: This is a prospective, randomized, partially-blinded pilot study. Randomization for the study will be done in 2 stages.

The first stage of randomization will randomize subjects to either the early or late initiation of sirolimus. At this stage of the randomization, subject will have a 30% chance of being in group 1 (early-initiation of sirolimus), and a 70% chance of being in group 2 (diagnostic-guided sirolimus group).

The second stage randomization will be done only on subjects in group 2 (diagnostic-guided sirolimus group) at the time of their first annual heart transplant review. At the time of their annual heart transplant review, subjects in group 2 will have a 50% chance of being in group 2A (CAV diagnosed by angiogram), and a 50% chance of being in group 2B (CAV diagnosed by intravascular ultrasound).

Group 1: Initiate sirolimus at 6 months after transplant

Group 2A: Initiate sirolimus after development of angiographic stenosis of >70% in a major epicardial vessel or >50% in the left main artery

Group 2B: Initiate sirolimus after development of maximal intimal thickness of 0.5 mm on intravascular ultrasound

Retrospective Arm

The main objective of this retrospective study is to compare a treatment strategy based on the diagnosis of CAV by intravascular ultrasound to a strategy guided by angiogram.

Design: This is a randomized, partially-blinded pilot study. Subjects will be randomized 1:1 to one of two groups. At the time of the randomization, the subject will have a 50% chance of being in group 1 (initiation of sirolimus when CAV is diagnosed by angiogram) and a 50% chance of being in group 2. (Initiation of sirolimus when CAV is diagnosed by IVUS)

Primary Endpoints for Prospective and Retrospective Arms

  1. Change in maximal intimal thickness at 1, 2, 3 and 4 years
  2. Combination of significant coronary artery disease (as described above), death, major rejection episodes, and decrease in global ejection function of more than 10% from baseline at 3 and 4years.

Secondary endpoints for Prospective and Retrospective Arms

  1. Mean MIT at 1, 2, 3, and 4 years
  2. Percent atheroma volume at 1,2,3 and 4 years
  3. Death from CAV, death from any cause, myocardial infarction, need for PCI, number of hospitalizations, infection rates, evidence of restrictive physiology, arrhythmic event related to CAV or pulmonary hypertension at 4 years.
  4. Change in small artery elasticity at 1, 2, 3, and 4 years
  5. Change in endothelial progenitor cell count at 1 and 2 years
  6. Change in biomarkers (see table) at 1 and 2 years
Being tested
Sirolimus
Keywords
Cardiac Allograft Vasculopathy in Heart Transplant

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • SirolimusDrug

    Also called Rapamycin

    Will initiate sirolimus within 6 months of heart transplant

  • SirolimusDrug

    Also called Rapamycin

    Will start sirolimus after CAV has been diagnosed by angiogram

  • SirolimusDrug

    Also called Rapamycin

    Will start sirolimus after CAV has been diagnosed by intravascular ultrasound

  • SirolimusDrug

    Also called Rapamycin

    Will start sirolimus after they develop CAV by angiogram

  • SirolimusDrug

    Also called Rapamycin

    Will start sirolimus after CAV has been diagnosed by intravascular ultrasound

Study groups in NCT01305395
Study groupRoleWhat they receive
Early Intervention ArmExperimentalInitiate sirolimus within 6 months of heart transplant
Receives: Drug: Sirolimus
Late Intervention Arm: Group 2AExperimentalInitiate sirolimus after CAV is diagnosed by angiogram
Receives: Drug: Sirolimus
Retrospective Arm: Angiogram groupExperimentalStart sirolimus after CAV diagnosed is by angiogram
Receives: Drug: Sirolimus
Late Intervention Arm: Group 2BExperimentalStart sirolimus after CAV is diagnosed by IVUS
Receives: Drug: Sirolimus
Retrospective Arm: Intravascular UltrasoundExperimentalSirolimus after CAV is diagnosed by IVUS
Receives: Drug: Sirolimus

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. 1. Change in maximal intimal thickness

    Measured: 1, 2, 3 and 4 years

Secondary outcomes (6)
  1. Mean maximal intima thickness

    Measured: 1, 2, 3, and 4 years

  2. Percent atheroma volume

    Measured: 1,2,3 and 4 years

  3. Death from CAV, death from any cause, myocardial infarction, need for percutaneous coronary intervention (PCI), number of hospitalizations, infection rates, evidence of restrictive physiology, arrhythmic event related to CAV or pulmonary hypertension

    Measured: at 4 years.

  4. Change in small artery elasticity

    Measured: At 1, 2, 3, and 4 years

  5. Change in endothelial progenitor cell count

    Measured: At 1 and 2 years

  6. Change in biomarkers

    Measured: At 1 and 2 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted28 Feb 2011 (estimated)
  2. Study startNov 2010
  3. Primary completionJan 2015
  4. Study completionJan 2015

Why it stopped: Due in part, to reduced transplant volume and enrollment has been difficult.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
0 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01305395
Sponsor's protocol ID
1007M85473
Acronym
STOPCAV
Status last verified
Jan 2017
First submitted
25 Feb 2011
Last updated
24 Jan 2017
Results posted
No
Data monitoring committee
Yes

Publications

  • Christie JD, Edwards LB, Aurora P, Dobbels F, Kirk R, Rahmel AO, Stehlik J, Taylor DO, Kucheryavaya AY, Hertz MI. The Registry of the International Society for Heart and Lung Transplantation: Twenty-sixth Official Adult Lung and Heart-Lung Transplantation Report-2009. J Heart Lung Transplant. 2009 Oct;28(10):1031-49. doi: 10.1016/j.healun.2009.08.004. No abstract available.

    PubMed 19782285
  • Rahmani M, Cruz RP, Granville DJ, McManus BM. Allograft vasculopathy versus atherosclerosis. Circ Res. 2006 Oct 13;99(8):801-15. doi: 10.1161/01.RES.0000246086.93555.f3.

    PubMed 17038650
  • Weis M, von Scheidt W. Cardiac allograft vasculopathy: a review. Circulation. 1997 Sep 16;96(6):2069-77. doi: 10.1161/01.cir.96.6.2069.

    PubMed 9323100
  • Johnson DE, Alderman EL, Schroeder JS, Gao SZ, Hunt S, DeCampli WM, Stinson E, Billingham M. Transplant coronary artery disease: histopathologic correlations with angiographic morphology. J Am Coll Cardiol. 1991 Feb;17(2):449-57. doi: 10.1016/s0735-1097(10)80114-7.

    PubMed 1991903
  • Rickenbacher PR, Pinto FJ, Chenzbraun A, Botas J, Lewis NP, Alderman EL, Valantine HA, Hunt SA, Schroeder JS, Popp RL, et al. Incidence and severity of transplant coronary artery disease early and up to 15 years after transplantation as detected by intravascular ultrasound. J Am Coll Cardiol. 1995 Jan;25(1):171-7. doi: 10.1016/0735-1097(94)00323-i.

    PubMed 7798497
  • Costello JM, Wax DF, Binns HJ, Backer CL, Mavroudis C, Pahl E. A comparison of intravascular ultrasound with coronary angiography for evaluation of transplant coronary disease in pediatric heart transplant recipients. J Heart Lung Transplant. 2003 Jan;22(1):44-9. doi: 10.1016/s1053-2498(02)00484-9.

    PubMed 12531412
  • Sharples LD, Jackson CH, Parameshwar J, Wallwork J, Large SR. Diagnostic accuracy of coronary angiography and risk factors for post-heart-transplant cardiac allograft vasculopathy. Transplantation. 2003 Aug 27;76(4):679-82. doi: 10.1097/01.TP.0000071200.37399.1D.

    PubMed 12973108
  • Kobashigawa JA, Tobis JM, Starling RC, Tuzcu EM, Smith AL, Valantine HA, Yeung AC, Mehra MR, Anzai H, Oeser BT, Abeywickrama KH, Murphy J, Cretin N. Multicenter intravascular ultrasound validation study among heart transplant recipients: outcomes after five years. J Am Coll Cardiol. 2005 May 3;45(9):1532-7. doi: 10.1016/j.jacc.2005.02.035.

    PubMed 15862430
  • Tuzcu EM, Kapadia SR, Sachar R, Ziada KM, Crowe TD, Feng J, Magyar WA, Hobbs RE, Starling RC, Young JB, McCarthy P, Nissen SE. Intravascular ultrasound evidence of angiographically silent progression in coronary atherosclerosis predicts long-term morbidity and mortality after cardiac transplantation. J Am Coll Cardiol. 2005 May 3;45(9):1538-42. doi: 10.1016/j.jacc.2004.12.076.

    PubMed 15862431
  • Mancini D, Pinney S, Burkhoff D, LaManca J, Itescu S, Burke E, Edwards N, Oz M, Marks AR. Use of rapamycin slows progression of cardiac transplantation vasculopathy. Circulation. 2003 Jul 8;108(1):48-53. doi: 10.1161/01.CIR.0000070421.38604.2B. Epub 2003 May 12.

    PubMed 12742978
  • Keogh A, Richardson M, Ruygrok P, Spratt P, Galbraith A, O'Driscoll G, Macdonald P, Esmore D, Muller D, Faddy S. Sirolimus in de novo heart transplant recipients reduces acute rejection and prevents coronary artery disease at 2 years: a randomized clinical trial. Circulation. 2004 Oct 26;110(17):2694-700. doi: 10.1161/01.CIR.0000136812.90177.94. Epub 2004 Jul 19.

    PubMed 15262845
  • Raichlin E, Bae JH, Khalpey Z, Edwards BS, Kremers WK, Clavell AL, Rodeheffer RJ, Frantz RP, Rihal C, Lerman A, Kushwaha SS. Conversion to sirolimus as primary immunosuppression attenuates the progression of allograft vasculopathy after cardiac transplantation. Circulation. 2007 Dec 4;116(23):2726-33. doi: 10.1161/CIRCULATIONAHA.107.692996. Epub 2007 Nov 19.

    PubMed 18025531
  • Raichlin E, Prasad A, Kremers WK, Edwards BS, Rihal CS, Lerman A, Kushwaha SS. Sirolimus as primary immunosuppression is associated with improved coronary vasomotor function compared with calcineurin inhibitors in stable cardiac transplant recipients. Eur Heart J. 2009 Jun;30(11):1356-63. doi: 10.1093/eurheartj/ehp123. Epub 2009 Apr 21.

    PubMed 19383734

Questions about this trial

What is this clinical trial studying?

A study testing Sirolimus in people with Cardiac Allograft Vasculopathy, run by University of Minnesota at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: withdrawn, as of the sponsor's last update on 24 Jan 2017. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study was withdrawn before enrolling participants, so there are no results.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

1. Change in maximal intimal thickness (time frame: 1, 2, 3 and 4 years). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01305395, which also lists 13 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Jan 2017; AzTrials last refreshed its copy on 8 Nov 2026.

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