Assessment of Individual Risk of Cardiovascular Events by Platelet FcGammaRIIa

Completed

• Conditions: NSTEMI; STEMI

• Registration Number: NCT05175261
• Lead Sponsor: Prolocor, Inc

Brief Summary

This is a Prospective, Observational Multicenter Non-Interventional Cohort Study. The primary objective is to determine whether platelet expression of FcγRIIa is associated with risk of myocardial infarction (MI), stroke and death. Secondary objectives include: 1) Develop a score that combines clinical characteristics plus platelet expression of FcγRIIa to determine the risk of MI, stroke, and death; and 2) Determine whether platelet expression of FcγRIIa is associated with risk of major bleeding. The primary endpoint is the composite of death, MI and stroke. A secondary endpoint is the incidence of clinically significant bleeding according to the Bleeding Academic Research Consortium (BARC) scale type 2-5. Approximately 800 male and female subjects with confirmed MI \[ST-segment elevation MI (STEMI) or non-ST-segment elevation MI (NSTEMI)\] will be enrolled before hospital discharge for the index event. Approximately 10 sites in the United States will participate in this study. It is anticipated that it will take approximately 12 months to enroll approximately 800 subjects. The study and subject follow-up will continue until 1) at least 80 ischemic events (MI, stroke, and death) have occurred, and 2) the last subject enrolled has completed 18 months of follow-up.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2021-12-14
• Study First Submitted QC: 2021-12-14
• Study First Posted: 2022-01-03
• Study Start: 2022-01-20
• Primary Completion: 2025-04-18
• Study Completion: 2025-05-22
• Results First Submitted: 2025-05-24
• Status Verified: 2025-09
• Results First Submitted QC: 2025-09-06
• Last Update Submitted: 2025-09-06
• Results First Posted: 2025-09-09
• Last Update Posted: 2025-09-09

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 764

Inclusion Criteria

1. Type 1 Myocardial Infarction (STEMI and NSTEMI)

2. Must have ≥ 2 of the following risk factors:

   1. Age ≥ 65
   2. Multi-vessel coronary artery disease (MVD) defined as ≥2 vessels or left main with a stenosis ≥50%
   3. Chronic kidney disease (CKD) defined as estimated glomerular filtration rate (GFR) ˂ 60 mL/min/1.73 m2
   4. Diabetes mellitus (DM)
   5. Prior MI

3. Must agree to participate in the study, to comply with all study procedures and follow-up contact

4. Signed the informed consent form

Exclusion Criteria

1. Requirement for treatment with full dose anticoagulant therapy (e.g., for atrial fibrillation)
2. Participation in another trial in which the subject is known to receive or could receive anticoagulant or antiplatelet treatment as part of the trial intervention.
3. Non-cardiovascular conditions that, in the judgment of the investigator, will limit survival to less than 2 years

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Ischemic	Study Duration (up to 3 years)	compare the hazard ratio for first occurrence of myocardial infarction (MI), stroke and death in patients with high vs low platelet FcGammaRIIa

Secondary Outcome Measures

Name	Time	Method
Risk Score	Study Duration (up to 3 years)	• Develop a score that combines clinical characteristics plus platelet expression of FcγRIIa to determine the risk of MI, stroke, and death
Bleeding	Study Duration (up to 3 years)	compare the hazard ratio for first occurrence of bleeding (bleeding academic research consortium 2, 3, and 5) in patients with high vs low platelet FcGammaRIIa

Trial Locations

Locations (1)

University of Vermont; 🇺🇸 Burlington, Vermont, United States