Guiding NOAC therapy for patients with acute coronary syndrome after heart procedures

A Randomized Controlled Clinical Trial of PARIS Coronary Thrombosis Risk Score Combined With D-dimer to Guide New Oral Anticoagulant Antithrombotic Therapy in Patients With Acute Coronary Syndrome After Percutaneous Coronary Intervention

Phase 4 Interventional China National Center for Cardiovascular Diseases · NCT05638867

This study is testing a new combination of heart medications to see if it can help people with acute coronary syndrome avoid serious heart problems without causing more bleeding than standard treatment.

Quick facts

PhasePhase 4
Study typeInterventional
Enrollment3944 (estimated)
Ages18 Years to 75 Years
SexAll
SponsorChina National Center for Cardiovascular Diseases Government
Locations1 site (Beijing, Beijing Municipality)
Trial IDNCT05638867 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to compare the effectiveness and safety of a short-term triple antithrombotic therapy, which includes DAPT and low-dose rivaroxaban, against standard DAPT in patients with acute coronary syndrome (ACS) who are at high ischemic risk. Participants will be randomly assigned to receive either the novel therapy for three months followed by standard DAPT or standard DAPT throughout the study. The trial will assess whether the new approach can reduce ischemic events without increasing the risk of severe bleeding. Patients will undergo five follow-up assessments during the study period.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18-65 diagnosed with acute coronary syndrome within 1-7 days after symptom stabilization, who have elevated D-dimer levels or a high PARIS risk score.

Not a fit: Patients with a history of severe bleeding, stroke, or those with significant hepatic or renal insufficiency may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a safer and more effective treatment option for patients with acute coronary syndrome at high risk of ischemic events.

How similar studies have performed: Other studies have explored similar antithrombotic strategies, but this specific approach using the PARIS risk score and D-dimer levels is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Diagnosed with Acute Coronary Syndrome 1-7 days after initial symptom stabilization,
* Aged 18-65 years old,
* Elevated D-dimer levels (≥0.28 μg/ml) on admission or PARIS coronary thrombosis risk score ≥ 3 points,
* Received Percutaneous Coronary Intervention and not on non-oral anticoagulants,
* Indicated for dual antiplatelet medication

Exclusion Criteria:

* Platelet level below 90 x10\^6
* Hemoglobin level is less than 11g/dL
* History of severe bleeding
* History of stroke/TIA
* Severe hepatic/renal insufficiency
* Indicated for anticoagulation

Where this trial is running

Beijing, Beijing Municipality

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Coronary Artery DiseasePercutaneous Coronary InterventionAcute Coronary SyndromeNovel Oral AnticoagulantPARIS risk scoreD-dimer
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.