Impact of PCSK9 Inhibitors on Coronary Microvascular Dysfunction in Patients With Atherosclerotic Cardiovascular Disease Proved by Myocardial Ischemia and Needing Coronarography

NCT ID: NCT04338165

Last Updated: 2022-05-19

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

UNKNOWN

Clinical Phase

PHASE2

Total Enrollment

66 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-01-08

Study Completion Date

2022-11-30

Brief Summary

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Proprotein convertase subtilisin/kexin type 9 inhibitor monoclonal antibodies (anti-PCSK9) significantly reduce the serum LDL-C level, leading to a regression of the coronary epicardial plaque demonstrated by intracoronary ultrasonography (IVUS), as well as cardiovascular events (CV) in patients with atherosclerotic CV disease treated with statin. The impact of PCSK9 inhibition on coronary microcirculation has never been assessed. However, microvascular coronary dysfunction (CMVD) is a powerful prognostic marker, irrespective of conventional CV risk factors, but also of the severity of the epicardial coronary involvement detected during coronary angiography. The investigators hypothesized that anti-PCSK9 would decrease CMVD, measured by the microcirculatory resistance index (MRI) during coronary angioplasty (Percutaneous coronary intervention, PCI) in patients with myocardial ischemia proved in myocardial scintigraphy.

Detailed Description

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Conditions

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Atherosclerotic Cardiovascular Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Evolocumab, 420 milligrams

Single injection of 420 milligrams of evolocumab (REPATHA®) one month before coronary angiography and coronary microcirculation (IMR) measurement.

Group Type EXPERIMENTAL

Evolocumab 140 MG/ML [Repatha]

Intervention Type DRUG

3 injections of evolocumab 140 milligrams performed within 30 minutes and self-administered (subcutaneously in the abdomen, thigh, or upper arm)

Control arm

Measurement of coronary microcirculation (IMR) during coronary angiography, without prior evolocumab injection.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Evolocumab 140 MG/ML [Repatha]

3 injections of evolocumab 140 milligrams performed within 30 minutes and self-administered (subcutaneously in the abdomen, thigh, or upper arm)

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Male or female patient, aged 40 to 85,
* More than 50 kilograms
* Defined at high cardiovascular risk according to European guidelines
* LDL-C level ≥ 0.7 g / L (biological assessment of less than 6 months)
* Having benefited from myocardial scintigraphy
* For which coronarography is indicated according to European guidelines
* Affiliated with social security,
* Signed informed consent form

Exclusion Criteria

* Clinical presentation of unstable angina
* Patient whose state of physical or psychological health could compromise the obtaining of his informed consent and his compliance with the requirements of the protocol, with the study evaluation, procedures or completion.
* End stage disease (estimated survival of less than one year)
* Severe renal dysfunction, defined as an estimated creatinine clearance (MDRD) \< 30 mL/min at screening
* Contra-indication to adenosin : hypersensitivity to active active substance or to any of the excipients, type II or III atrioventricular block or atrial disease (except for pacemaker users), long QT syndrome, severe arterial hypotension, acute heart failure, asthma and severe chronic obstructive pulmonary disease, unstable angina unstabilized by drug therapy, taking dipyridamole, aminophylline, theophylline or other xanthine base within 24 hours prior to adenosine administration
* Contra-indication to heparin: hypersensitivity to active substance or to any of the excipients, past heparin induced thrombopenia type II, haemorrhage.
* Prior Coronary Artery Bypass Graft Surgery (CABG)
* Prior myocardial infarction in the territory of ischemia
* New York Heart Association (NYHA) class III or IV, or last known left ventricular ejection fraction \< 30%
* Known hemorrhagic stroke at any time
* Uncontrolled or recurrent ventricular tachycardia
* Uncontrolled hypertension defined as sitting systolic blood pressure (SBP) \> 180 mmHg or diastolic BP (DBP) \> 110 mmHg
* Actual use of PCSK9 inhibitor (evolocumab or others)
* Untreated or inadequately treated hyperthyroidism or hypothyroidism, controlled by biological assessment if needed, defined by thyroid stimulating hormone (TSH) \< lower limit of normal (LLN) or \> 1.5 times the upper limit of normal (ULN), respectively, and free thyroxine (T4) levels that are outside normal range at screening
* Active liver disease or hepatic dysfunction, defined as aspartate aminotransferase (AST) or alanine aminotransferase (ALT) \> 3 times the ULN at screening
* Recipient of any major organ transplant (eg, lung, liver, heart, bone marrow, renal)
* Personal or family history of hereditary muscular disorders
* LDL apheresis within 12 months prior to randomization
* Creatinine Phosphokinase (CPK) \> 5 ULN at screening
* Active infection or others active disease judge by investigator incompatible with the protocol completion
* Main known active infection including positive viral serology (Human Immunodeficiency Virus, Hepatitis B Virus and Hepatitis C Virus)
* Malignancy (except non-melanoma skin cancers, cervical in-situ carcinoma, breast ductal carcinoma in situ, or stage 1 prostate carcinoma) within the last 10 years
* Known sensitivity to evolocumab or their excipients to be administered during dosing or natural rubber / latex
* Patient likely to not be available to complete all protocol-required study visits or procedures.
* Patient in exclusion period of another study
* Woman able to procreate in the absence of highly effective contraception
* Persons referred to in Articles L1121-6 to L1121-8 of the French code of public health (this corresponds to all persons protected: pregnant or parturient women, breastfeeding mothers, persons deprived of liberty by judicial or administrative decision, persons subject to a legal protection measure).
Minimum Eligible Age

40 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University Hospital, Grenoble

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Gilles Barone-Rochette, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

CHU Grenoble Alpes

Locations

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Grenoble University Hospital

Grenoble, , France

Site Status RECRUITING

Countries

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France

Central Contacts

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Gilles Barone-Rochette, MD, PhD

Role: CONTACT

+33476765172

Clémence Charlon

Role: CONTACT

Facility Contacts

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Gilles Barone Rochette

Role: primary

0033476765172

References

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Other Identifiers

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38RC19.186

Identifier Type: -

Identifier Source: org_study_id

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