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AneurysmNCT04224675

Captopril Versus Atenolol to Prevent Expansion Rate of Thoracic Aortic Aneurysms

A study testing Atenolol in people with Aneurysm, run by Onassis Cardiac Surgery Centre.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

Thoracic aortic aneurysms (TAA) are considered "silent killers" because they scarcely display any symptomatology, but are correlated with significant mortality and morbidity. Current guidelines regard aortic aneurysm disease as a coronary artery disease equivalent and suggest aspirin and statin use to reduce the… Read more about this study

Who is it for?
Any ageHealthy volunteers can take part
Conditions the study is for
Aneurysm
What is being tested?
Atenolol
Could I receive a placebo?
No, everyone receives an active treatment
How many people
424 participants
Where
No sites listed yet
Study dates
7 Mar 2020to 7 Mar 2023
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 Any age
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult, Older adult

Who may be able to join

  • All adult men or women, aged at least 70 years, with TAA 3.0-5.5 cm in diameter measurements according to magnetic resonance imaging (MRI) of the aorta and with a systolic BP < 150 mmHg will be eligible for inclusion in the study.

Who cannot join

  • Patients already receiving an ACEI or BB daily, patients with known renal artery stenosis (> 50%), patients incapable of providing informed consent, history of aortic dissection, angioedema or any intolerance to ACEIs or BBs, asthma, pregnancy, frailty, respiratory failure, and renal failure.

About this study

Thoracic aortic aneurysms (TAA) are considered "silent killers" because they scarcely display any symptomatology, but are correlated with significant mortality and morbidity. Current guidelines regard aortic aneurysm disease as a coronary artery disease equivalent and suggest aspirin and statin use to reduce the progression of atherosclerosis, as well as beta-blocker (BB) therapy. No therapy, however, is effective at limiting aneurysm expansion and preventing rupture, even in large trials. TAA has emerged as an inflammation-mediated disorder. Angiotensin-converting enzyme inhibitors (ACEIs) can reduce the wall shear stress and inflammation, both of which play vital roles in the expansion of the aneurysm.

The study will be a randomized, double-blind trial. Patients will be randomized into one of two parallel arms, receiving captopril or atenolol. The doses of captopril and atenolol will be 25 mg daily for the first 15 days, rising to 100 mg according to clinical tolerance and BP estimates. The sample size will be set at 424 subjects (212 per group). The primary end-point will be the rate of change in the absolute diameter of the aortic root and ascending aorta on MRI of the aorta after 36 months of therapy with captopril vs. atenolol.

Read more

BBs have not been precisely found to decrease aneurysm growth rates. ACEIs could lead to the prevention of aneurysm degeneration through their antihypertensive and anti-inflammatory properties.

The results of this trial will clarify that ACEIs are superior to BB therapy in reducing the growth rate of TAAs, the rate of change in aortic insufficiency, the time to aortic rupture or dissection, the need for aortic surgery or intervention, and death.

Conditions
Aneurysm
Being tested
Atenolol
Medical subject headings
Aneurysm

What participants receive

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

  • AtenololDrug

    Also called Captopril

    Captopril versus atenolol to prevent expansion rate of thoracic aortic aneurysms

Study groups in NCT04224675
Study groupRoleWhat they receive
AteOtherNot described
Receives: Drug: Atenolol
CapOtherNot described
Receives: Drug: Atenolol

What is being measured

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

  1. rate of change in the absolute diameter of the aortic root and ascending aorta on MRI of the aorta after 36 months of therapy with captopril vs. atenolol

    Measured: 3 years

Timeline

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

  1. First posted13 Jan 2020
  2. Study start7 Mar 2020 (estimated)
  3. Primary completion7 Mar 2023 (estimated)
  4. Study completion7 Mar 2023 (estimated)

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
Single blind
Who is masked
Investigator
Enrolment
424 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04224675
Sponsor's protocol ID
OnassisCSC
Status last verified
Jan 2020
First submitted
8 Jan 2020
Last updated
13 Jan 2020
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • Spartalis M, Tzatzaki E, Iliopoulos DC, Spartalis E, Patelis N, Athanasiou A, Paschou SA, Voudris V, Siasos G. Captopril versus atenolol to prevent expansion rate of thoracic aortic aneurysms: rationale and design. Future Cardiol. 2021 Mar;17(2):189-195. doi: 10.2217/fca-2020-0062. Epub 2020 Aug 25.

    PubMed 32842783

Questions about this trial

What is this clinical trial studying?

A study testing Atenolol in people with Aneurysm, run by Onassis Cardiac Surgery Centre.

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 1 inclusion and 1 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: status not confirmed, as of the sponsor's last update on 13 Jan 2020. Status can change between updates, so confirm with the study contact before making plans.

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?

Results are not available in the source record.

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?

rate of change in the absolute diameter of the aortic root and ascending aorta on MRI of the aorta after 36 months of therapy with captopril vs. atenolol (time frame: 3 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 NCT04224675, which also lists 1 linked publication.

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 13 Jan 2020.

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