About this trial
The main objective is to compare the effect of a single injection of two doses of rituximab versus placebo on 6 months left ventricular systolic function, using CMR, in patients who have had an acute anterior STEMI. Following the sponsor's decision to stop enrolment in the 200 mg arm, the primary objective of the study is to evaluate the efficacy of a single 1000 mg dose of rituximab versus placebo.
The primary endpoint is the left ventricular ejection fraction (LVEF) by CMR at 6 months.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age ≥ 18 years with no upper limit (women must be either postmenopausal defined as being amenorrhoeic for greater than 2 years with an appropriate clinical profile, e.g. age appropriate (>55 years old), history of vasomotor symptoms) or having documented hysterectomy and/or bilateral oophorectomy) ;
- Clinical evidence at presentation of anterior ST-elevation myocardial infarction (STEMI) defined as symptoms suggestive of acute myocardial ischemia, an electrocardiogram showing ST-segment elevation ≥2 mm in ≥2 contiguous leads in V1 to V4 or a large inferior MI with evidence of low-ejection fraction (LVEF<45%);
Complete occlusion (i.e. TIMI flow 0-1) of proximal or mid left anterior descending (LAD) coronary artery on urgent angiography interpreted as the infarct-related artery (IRA);
Onset of worse symptoms within 48 hours before primary PCI;
Disqualifiers
History of previous MI without documented preserved left ventricular ejection fraction (LVEF >50%) prior to the current admission will be an exclusion criterion;
Presentation with cardiac arrest;
Cardiogenic shock (defined as systolic blood pressure <90 mmHg for >30minutes, or necessitating vasopressors to achieve a blood pressure ≥90 mmHg);
Cardiac electrical instability (defined as complete heart block needing temporary pacing or any tachyarrhythmia needing cardioversion);
Trial design
Parallel
Treatments tested in this trial
Active arm 1000 mg
DrugActive arm 1000 mg: 1 bag containing 1000 mg of rituximab\* in 500 ml of NaCl 0.9% \* Mabthera® and all registered biosimilars are likely to be used in this trial
Placebo arm
DrugPlacebo arm: 1 bag of 500 ml of NaCl 0.9%
Treatment groups
Trial outcomes
Primary outcomes
Left ventricular ejection fraction (LVEF) by CMR at 6 months.
To compare the effect of a single injection of two doses of rituximab versus placebo on 6 months left ventricular systolic function, using CMR, in patients who have had an acute anterior STEMI.
Secondary outcomes
Infarct size by CMR
To compare the effects of rituximab versus placebo on infarct size by CMR at day 5 (+/-2) and at 6 months.
Oedema extension by CMR
To compare the effects of rituximab versus placebo on oedema extension by CMR at day 5 (+/-2) .
T2 relaxation time at ischemic region by CMR
To compare the effects of rituximab versus placebo on T2 relaxation time at ischemic region by CMR (using T2 mapping) at day 5 (+/-2).
Microvascular obstruction by CMR
To compare the effects of rituximab versus placebo on microvascular obstruction by CMR (hypointense areas within LGE) at day 5 (+2/-) .
Sponsors and contacts
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Assistance Publique - Hôpitaux de Paris
Lead sponsor
Institut National de la Santé Et de la Recherche Médicale, France
Collaborator