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Enrolling by Invitation

NCT Number: NCT04957719

Selatogrel Outcome Study in Suspected Acute Myocardial Infarction

This study will randomize patients recently discharged from the hospital with a confirmed diagnosis of type 1 acute myocardial infarction (Thygesen et al. 2018) and having additional cardiovascular risk factors.

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Key information

Conditions

Acute Myocardial Infarction

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Royal Adelaide Hospital/ CNARTS, Adelaide, Australia

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About this study

The purpose of this study is to assess the clinical efficacy of selatogrel when self-administered upon occurrence of symptoms suggestive of an acute myocardial infarction (AMI) in participants at risk of having a recurrent AMI.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Main Inclusion Criteria:

  • Confirmed diagnosis of symptomatic type 1 acute myocardial infarction (AMI) ST-Elevation Myocardial Infarction (STEMI) or Non-ST-Elevation Myocardial Infarction (NSTEMI), no longer than 4 weeks prior to randomization.
  • Diagnosis of multivessel coronary artery disease defined as ≥ 50% stenosis on 2 or more coronary artery territories, during a prior cardiac catheterization or cardiac catheterization during the qualifying AMI event and presence of at least 1 of the following risk factors:
  • Second prior AMI,
  • Diabetes mellitus defined by ongoing glucose lowering treatment,
  • Chronic kidney disease defined as estimated glomerular filtration rate less than 60 mL/min/1.73 m2 and either known history of chronic kidney disease or a biomarker of chronic kidney damage,
  • Peripheral artery disease at any time prior to randomization,
  • Absence of, or unsuccessful coronary revascularization of the qualifying AMI.
  • Successful self-administered placebo according to the autoinjector instruction for use training during screening.

Main Exclusion Criteria:

  • Increased risk of serious bleeding including any of the following:
  • History of intracranial bleed at any time.
  • Known uncorrected intracranial vascular abnormality.
  • Gastrointestinal bleed requiring hospitalization or transfusion within 1 year prior to screening.
  • Already on oral triple antithrombotic therapy (i.e., Dual antiplatelet therapy and oral anticoagulant).
  • Known liver impairment significantly affecting the hepatic function.
  • Current dialysis.
  • Ischemic stroke or transient ischemic attack within 3 months of screening.
  • Chronic anemia with hemoglobin < 10 g/dL.
  • Chronic thrombocytopenia with platelet count < 100,000/mm3.
  • Known hypersensitivity to selatogrel, any of its excipients, or drugs of the P2Y12 class.
  • Previous exposure to an investigational drug within 3 months prior to randomization.
  • Participation in another clinical trial with an investigational product or device within 3 months prior to randomization.

Treatment and study plan

Selatogrel

Combination Product

Selatogrel is a reversible P2Y12 receptor antagonist for subcutaneous administration. Selatogrel will be administered as a liquid formulation in a sealed prefilled syringe in an autoinjector forming an integral ready-to-use, single-dose drug delivery system.

Participants will self-administer 16 mg of selatogrel subcutaneously with the autoinjector upon occurrence of symptoms suggestive of an acute myocardial infarction. Self-administration encompasses the use of the autoinjector by another person (e.g., partner, close relative, friend, caregiver) who may be called for help during the emergency situation of a suspected AMI.

Other names: ACT-246475

Placebo

Combination Product

Placebo will be administered as a liquid formulation in a sealed prefilled syringe in an autoinjector forming an integral ready-to-use, single-dose drug delivery system.

Participants will self-administer placebo subcutaneously with the autoinjector upon occurrence of symptoms suggestive of an acute myocardial infarction. Self-administration encompasses the use of the autoinjector by another person (e.g., partner, close relative, friend, caregiver) who may be called for help during the emergency situation of a suspected AMI.

Primary outcomes

  1. Clinical status as assessed by a 6-point ordinal scale

    Time frame: Total duration: up to 7 days

    The clinical status will be assessed using a 6-point ordinal scale after any study treatment self-administration. Only the worst clinical outcome will be retained as the primary efficacy outcome. The 6 mutually exclusive outcomes ranked from worst to best are:

    • Death (all causes), within 7 days after study treatment administration.
    • Acute myocardial infarction with compromised electro-hemodynamics, within 2 days after study treatment administration.
    • ST-Elevation Myocardial Infarction (STEMI), within 2 days after study treatment administration.
    • High-risk Non-ST-Elevation Myocardial Infarction (NSTEMI), within 2 days after study treatment administration.
    • NSTEMI with peak cardiac troponin greater than 10 times upper limit of normal, within 2 days after study drug administration.
    • None of the above

  2. Occurrence of Type 3 or 5 treatment-emergent bleeding events according to the Bleeding Academic Research Consortium (BARC) definition

    Time frame: Total duration: up to 2 days

    The number of:

    • Type 3 treatment-emergent bleeding events and
    • Type 5 treatment-emergent bleeding events

    will be assessed according to the Bleeding Academic Research Consortium (BARC) definition (Mehran et al. 2011), within 2 days after study treatment administration.

    The Bleeding Academic Research Consortium (BARC) definitions are:

    • Type 3, bleeding is divided into 3 categories, a through c, and includes clinical, laboratory, and/or imaging evidence of bleeding with specific healthcare provider responses.
    • Type 5, bleeding is fatal.

Secondary outcomes

  1. Occurrence of death, non-fatal acute myocardial infarction, hospitalization or unplanned emergency department visit for heart failure (Composite endpoint)

    Time frame: Total duration: up to 30 days

    Occurrence death, non-fatal acute myocardial infarction, hospitalization or unplanned emergency department visit for heart failure within 30 days after any self-administration.

Sponsors and collaborators

Lead sponsor

Viatris Innovation GmbH

Industry

Registry information

Official study title

Multi-center, Double-blind, Randomized, Placebo-controlled, Parallel-group Study to Evaluate the Efficacy and Safety of Self-administered Subcutaneous Selatogrel for Prevention of All-cause Death and Treatment of Acute Myocardial Infarction in Subjects With a Recent History of Acute Myocardial Infarction

Acronym: SOS-AMI

Important dates

Study start
2021
Primary completion
2027
Study completion
2027
First posted
Jul 12, 2021
Registry last updated
Jul 23, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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