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Status unknownNCT04717219MIRACLEUpdated Apr 12, 2022

Myeloid Cells in Aortic Valve Stenosis

An observational study in Aortic Valve Disease and Aortic Valve Stenosis, sponsored by Radboud University Medical Center. Status unknown at 3 sites in Netherlands. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-04-12.

Sponsored by Radboud University Medical Center · Observational

The sponsor has not verified this record recently (last verified Apr 2022), so the status shown — last known as Recruiting — may be out of date.
Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
400
Ages
18 Years and older
Sex
All
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Study summary

Investigators plan to characterize systemic inflammation and circulating immune cells in participants with moderate and severe calcific aortic valve disease and matched healthy controls.

Read the detailed description

Calcific aortic valve disease (CAVD) is the most common type of valvular heart disease in the Western world. Due to the aging of the population, the impact of this disorder is expected to further increase in the next decades. The underlying pathophysiology remains incompletely defined and there are currently no effective medical treatments capable of altering its course, identifying a major unmet need in this growing population of patients.

Based on the similarities between CAVD and atherosclerosis in pathophysiology and shared risk factors, it is now hypothesized that activation of the innate immune system contributes to the development of CAVD. Therefore, the investigators will perform an observational study to assess the role of activation of the innate immune system in CAVD.

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Conditions studied

  • Aortic Valve Disease
  • Aortic Valve Stenosis

Keywords

  • calcific aortic valve disease
  • valvular heart disease
  • inflammation
  • innate immune cells
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In context

Aortic Valve Stenosis

985 studies on the registry are indexed under Aortic Valve Stenosis; 283 are open to participants now.

This study's planned enrollment of 400 is above the median of 200 across 424 observational studies indexed under Aortic Valve Stenosis.

Browse Aortic Valve Stenosis studies →

Lead sponsor

Radboud University Medical Center is the lead sponsor of 959 studies on the registry; 134 are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Patients who present themselves or are already known at the department of cardiology or cardiothoracic surgery with the diagnosis of moderate or severe aortic valve stenosis as defined by transthoracic echocardiography according to the 2017 ESC/EACTS guidelines for the management of valvular heart disease.

Inclusion criteria

  • Age > 18 years
  • Mild, moderate or severe degenerative aortic valve stenosis as defined by transthoracic echocardiography according to the 2017 ESC/EACTS guidelines for the management of valvular heart disease.

Exclusion criteria

Exclusion Criteria:

  • Active auto-inflammatory or auto-immune diseases
  • Anti-inflammatory drugs
  • Vaccination less than one month before inclusion
  • Bone marrow transplantation
  • Active malignancy, except for local basal cell carcinoma or local squamous cell skin carcinoma, that can be treated curatively by excision.
  • History of endocarditis of the aortic valve
  • History of radiation therapy aimed at the chest
  • Acute ischemic cardiac event less than three months before inclusion
  • Systemic inflammation less than one month before inclusion with fever and/or for which antibiotics have been prescribed, with the exception for the use of nitrofurantoin for a urinary tract infection without fever
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Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
400 participants (estimated)
Patient registry
No

Groups and cohorts

  • Severe CAVD with atherosclerosis

    Participants with severe CAVD and significant atherosclerosis

    Other: Blood drawing

  • Severe CAVS without atherosclerosis

    Participants with severe CAVD without significant atherosclerosis

    Other: Blood drawing

  • Moderate CAVD with atherosclerosis

    Participants with mild or moderate CAVD and significant atherosclerosis

    Other: Blood drawing

  • Moderate CAVD without atherosclerosis

    Participants with mild or moderate CAVD without significant atherosclerosis

    Other: Blood drawing

  • Healthy controls

    Healthy controls without CAVD and without a history of atherosclerotic cardiovascular events, current typical complaints of angina pectoris or intermittent claudication and overt heart failure (NYHA class III/IV).

    Other: Blood drawing

  • Controls with bicuspid aortic valve stenosis

    Controls with bicuspid aortic valve stenosis, without a history of atherosclerotic cardiovascular events, current typical complaints of angina pectoris or intermittent claudication.

    Other: Blood drawing

Interventions

  • OtherBlood drawing

    Blood will be drawn after inclusion of the participants.

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What researchers measure

Primary outcomes

  1. Inflammatory phenotype of circulating immune cells.

    The inflammatory phenotype of circulating immune cells will be measured by determining the cytokine production capacity after stimulation with relevant stimuli.

    Time frame: 2 years

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Study locations

1 of 3 sites recruiting
  • Rijnstate
    Arnhem, Netherlands
    • R. Pisters, MD, PhD · Contact
    Not yet recruiting
  • Radboud university medical center
    Nijmegen, 6500 GA, Netherlands
    Recruiting
  • Canisius Wilhelmina Ziekenhuis
    Nijmegen, Netherlands
    • E.S. Zegers, MD · Contact
    Not yet recruiting
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References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 12, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04717219
Lead sponsor
Radboud University Medical Center
Responsible party
Niels Riksen (Prof. dr., Radboud University Medical Center) — Principal investigator
First posted
Jan 22, 2021
Start date
Nov 19, 2020
Primary completion
Dec 31, 2022 (estimated)
Completion
Dec 31, 2022 (estimated)
Last update
Apr 12, 2022

Study contacts

Niels P. Riksen, prof. dr.
Contact
Niels.Riksen@radboudumc.nl
+31-343618819
Niels P. Riksen, prof. dr.
principal investigator · Radboud University Medical Center

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Apr 2022. You cannot join it, but the record below documents what was studied.

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