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Long Term Follow-up of Comparison of Clopidogrel vs. Aspirin Monotherapy After Drug-eluting Stent Implantation

HOST-EXAM-Ex : Harmonizing Optimal Strategy for Treatment of Coronary Artery Stenosis - EXtended Antiplatelet Monotherapy - EXtended Follow up

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05567536
Acronym
HOST-EXAM-EX
Enrollment
5530
Registered
2022-10-05
Start date
2014-03-01
Completion date
2028-12-31
Last updated
2022-10-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Coronary Artery Disease, Atheroscleroses, Coronary

Keywords

percutenous coronary intervention, drug-eluting stent, chronic maintenance period

Brief summary

This is an retrospective extended study of a randomized clinical trial (The HOST-EXAM trial ClinicalTrials.gov Identifier: NCT02044250). Investigators will perform a retrospective analysis of all participants enrolled in this trial will be performed, until the longest follow-up duration.

Detailed description

The HOST-EXAM trial (ClinicalTrials.gov Identifier: NCT02044250) was an randomized clinical trial that was performed to compare head-to-head, the efficacy and safety between aspirin and clopidogrel monotherapy in patients who received PCI for coronary artery disease and required chronic maintenance antiplatelet therapy. From March 2014 through May 2018, a total of 5438 patients were enrolled, and follow-up was performed upto 24 months after randomization. After this study, randomization was unlocked and patients were followed-up based on the standard protocol. Afterwards, the current study was planned to perform a extended follow-up of the HOST-EXAM population. The specific drug by the randomization group in the HOST-EXAM trial was not mandatory after the initial 24 months, therefore participants received medication according to the current guidelines, and according to the physicians preferences. This is a observational, retrospective analysis of all clinical events after the randomization period. The prescribed medications and any clinical events will be evaluated.

Interventions

Patients who received a single antiplatelet agent will be analyzed according to the prescribed antiplatelet agent

Sponsors

Seoul National University Hospital
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
19 Years to No maximum

Inclusion criteria

* Patients who were enrolled in the HOST-EXAM randomized clinical trial

Exclusion criteria

* None, otherwise the patient refuses to participate in this study, or refuses to provide personal medical information

Design outcomes

Primary

MeasureTime frameDescription
Patient oriented composite outcomeFrom date of randomization until March, 2022.A composite of all-cause death, nonfatal myocardial infarction, stroke, readmission due to acute coronary syndrome, and major bleeding complication

Secondary

MeasureTime frameDescription
Thrombotic outcomeFrom date of randomization until March, 2022.cardiac death, non-fatal MI, ischemic stroke, readmission due to ACS, and definite or probable stent thrombosis
Bleeding outcomeFrom date of randomization until March, 2022.Bleeding Academic Research Consortium (BARC) type ≥2 bleeding

Other

MeasureTime frameDescription
All-cause deathFrom date of randomization until March, 2022.Death from any cause
Cardiac deathFrom date of randomization until March, 2022.Death from a cardiac cause

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026