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Circulating microRNAs and Degenerative Abdominal Aorta Aneurysm (ACTA-miRNA)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT03974958
Recruitment Status : Recruiting
First Posted : June 5, 2019
Last Update Posted : June 5, 2019
Information provided by (Responsible Party):
Assistance Publique Hopitaux De Marseille

Brief Summary:

Abdominal aortic aneurysm (AAA) is an aortic dilatation superior or equal to 30 mm with an estimated prevalence at 8% in men over 65 year-old. It evolves with no clinical signal until the rupture of the aortic wall with dramatic outcomes. The pathophysiological mechanisms include extracellular matrix remodeling, smooth muscle cells apoptosis, aggregation and activation of inflammatory cells in the aortic wall and heredity. The initiating and regulatory processes are complex and not fully elucidated. They encompass local aortic environment (flux, thrombus, wall shear stress, pressure and adipose tissue) and patient-dependent genetic (de)regulation.

This project follows the previous prospective ACTA study that aimed at identifying clinical criteria, circulating biomarkers or imaging data for thoracic aneurysm prognosis in an AAA population. The preliminary results showed that 1) a low wall shear stress index and the luminal volume are more predictive values for a rapid AAA growth and an intraluminal thrombus than the maximal aortic diameter 2) three thoracic aortic phenotypes (normal, dilated, aneurysmal) stratify the disease extent 3) the age and the female gender are associated to an extended disease. During this study we created a biobank in which blood samples of AAA patients were collected at the time of their inclusion (T1). This new ACTA-miRNA study aims at correlating circulating biomarkers to the anatomical and biomechanical markers previously highlighted for a rapid aneurysmal growth. Circulating miRNA are involved in parietal remodeling and constitute promising targets for estimating patients-specific aortic risk.

From the literature, we thus selected 18 miRNA described to be involved in AAA biology: inflammation, remodeling, cellular homeostasis and wall shear stress. As control, we select non-AAA patients presenting with peripheral arterial obstructive disease (PAOD) matched in age, BMI, tobacco consumption, diabetes, cholesterol level and blood pressure with AAA patients enrolled in the ACTA study. During their follow-up, these ACTA patients are solicited to continue the program research and can participate to the ACTA-miRNA study. A third time analysis is performed for them (T3): we collect imaging data of total aorta required by their standard follow-up, as well as a blood sample. Differential analysis of the miRNA panel will be conducted between 1) AAA patients (T1) vs PAOD patients 2) fast-growing AAA vs slow-growing AAA 3) AAA & AAT patient group vs AAA alone and/or AAA & dilatation of thoracic aorta. 110 patients from the ACTA study are eligible to be included into the ACTA mi-RNA study. Inclusion of PAOD controls will be conducted until the number of 165 cases is reached (1:1.5 ratio).

Our primary objective is to validate a circulating-miRNA signature specific for abdominal aortic aneurysm.

Condition or disease Intervention/treatment Phase
Abdominal Aorta Aneurysm Genetic: Tissue-library Not Applicable

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 220 participants
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Other
Official Title: Circulating microRNAs and Degenerative Abdominal Aorta Aneurysm: Diagnostic Specificity and Prognostic Value in Clinical Practice
Actual Study Start Date : October 2, 2018
Estimated Primary Completion Date : October 1, 2020
Estimated Study Completion Date : October 1, 2021

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: AAA patients
Patients with abdominal aortic aneurysm (AAA)
Genetic: Tissue-library
circulating biomarkers (miRNA panel) analysis of blood samples

Experimental: PAOD patients
patients with peripheral arterial obstructive disease (PAOD)
Genetic: Tissue-library
circulating biomarkers (miRNA panel) analysis of blood samples

Primary Outcome Measures :
  1. Comparison of AAA miRNAs vs AOMI miRNAs [ Time Frame: 24 months ]
    Analyze the diagnostic value of the 18 selected microRNAs circulating profile in degenerative aneurysmal aortic remodeling (patients with an abdominal aortic aneurysm (AAA)) in comparison with the circulating profile of the same 18 microRNAs panel in the atherosclerosis remodeling (patients with peripheral arterial occlusive disease (AOMI) without AAA)

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

• Case AAA T3 : Patients included in the ACTA study. They benefited from aortic imaging assessment at times T1 and T2 and were not operated on AAA.

• AOMI Case Control : Patients referred for hospitalization or referred to vascular surgery for management of chronic peripheral claudication on AOMI not associated with aneuric aneurysm evolutionary or previously operated. They must benefit from a CT angiography of the aorta and lower extremity arteries as well as a cardiac ultrasound scan.

Exclusion Criteria:

  • minor patients;
  • pregnant women;
  • patients with cancer at the time of inclusion;
  • contraindication to iodinated contrast medium: allergy to iodine, severe renal insufficiency (≤40 ml / min);
  • patients presenting one of the following pathologies associated with a disruption of the activation of coagulation and / or inflammation (less than 6 weeks old):

    • Arterial thrombotic disease: acute coronary syndrome, TIA/CVD, peripheral artery acute ischemia and/or anti-vitamin K (AVK) treatment;
    • venous thrombotic pathology: peripheral venous thrombosis of less than 3 months and/or under AVK treatment, pulmonary embolism less than 6 months old and/or under AVK treatment;
    • surgery;
    • revascularization with angioplasty;
    • critical ischemia patente;
    • permanent atrial fibrillation due to associated microparticle elevation, and AVK treatment;
    • major haemorrhage;
    • acute infection.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03974958

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Contact: Laurence Bal, MD

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Assistance Publique Hôpitaux de Marseille Recruiting
Marseille, France, 13005
Contact: Laurence Bal, MD   
Sponsors and Collaborators
Assistance Publique Hopitaux De Marseille
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Study Director: Emilie Garrido Pradalié Assistance Publique Hôpitaux de Marseille
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Responsible Party: Assistance Publique Hopitaux De Marseille Identifier: NCT03974958    
Other Study ID Numbers: 2018-12
First Posted: June 5, 2019    Key Record Dates
Last Update Posted: June 5, 2019
Last Verified: June 2019

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Aortic Aneurysm
Aortic Aneurysm, Abdominal
Vascular Diseases
Cardiovascular Diseases
Aortic Diseases