The Study of Efficacy and Safety of Dimephosphon® in Acute Ischemic Stroke

Tatchempharmpreparaty, JSC

Status and phase: Enrolling; Phase 3

Conditions: Ischemic Stroke; Stroke; Physiological Effects of Drugs; Acute Stroke; Cerebrovascular Disorders

Treatments: Drug: Dimephosphon®; Drug: Placebo

Study type: Interventional

Funder types: Industry

Identifiers

NCT07167550

DMF-III-24 (Other Identifier)

Details and patient eligibility

About

A multicenter, randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of Dimephosphon® in acute ischemic stroke

Full description

This study is a multicenter, randomized, double-blind, placebo-controlled trial. The purpose of the study is to evaluate the efficacy and safety of Dimephosphon® in acute ischemic stroke. The study includes a screening period (Visit 1, up to 48 hours) and a treatment period (Visits 2-4). Subjects will be randomized into 2 groups in a 1:1 ratio: Group A (investigational drug Dimephosphon®) and Group B (placebo). Key inclusion criteria: verified by CT/MRI current hemispheric ischemic stroke, NIHSS score ≥5 and ≤15 at screening. The study will assess clinical outcomes using standardized scales including NIHSS, mRS, MMSE, MoCA and EQ-5D.

Enrollment: 184 estimated patients

Sex: All

Ages: 35 to 80 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Written informed consent was obtained from the patient or their legally authorized representative prior to study participation.
2. Age 35-80.
3. Patients must exhibit neurological manifestations consistent with acute ischemic stroke, with a documented onset-to-intervention interval ranging from 24 to 72 hours at the time of scheduled initial administration of the investigational drug.
4. Verified by CT/MRI current hemispheric ischemic stroke.
5. NIHSS score ≥5 and ≤15 at screening.
6. Ability to comply with all protocol-specified procedures, prohibitions, and restrictions.
7. Willingness and ability to adhere to highly effective contraceptive methods as outlined in the study protocol.

Exclusion criteria

1. Hemorrhagic stroke or hemorrhagic transformation of ischemic focus, traumatic brain injuries
2. Vertebrobasilar stroke and/or development of acute insufficiency syndromes in the arteries of the vertebrobasilar system
3. A patient with ischemic stroke who is a candidate for reperfusion therapy or who has undergone reperfusion therapy before participation in this study.
4. The presence of anatomical abnormalities of the cerebral vessels (arteriovenous malformations, cavernous malformations, aneurysms, atresia of at least one of the extracranial arteries) according to the anamnesis or CT/MRI data.
5. Progression of neurological symptoms of stroke, defined as an increase in the NIHSS score by 4 points at the second assessment (immediately before randomization) from the value obtained at the first assessment (immediately after signing the informed consent form).
6. Surgery on the carotid arteries less than 1 year before screening.
7. History of stroke less than 1 year before screening.
8. Myocardial infarction less than 6 months before screening.
9. Chronic renal failure stage 2-3 (creatinine clearance less than 40 ml/min).
10. Pregnancy or lactation.
11. Participation in another trial within 28 days prior to enrollment.
12. Use of prohibited medications.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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184 participants in 2 patient groups, including a placebo group

Dimephosphon®

Experimental group

Description:

Days 1-3: Dimephosphon® 2 g (2 vials) administered as intravenous infusion diluted in 200 mL of 0.9% sodium chloride solution three times daily (morning, afternoon, and evening, with minimum 5-hour interval between administrations). Days 4-14: Dimephosphon® 2 g (2 vials) administered as intravenous bolus diluted in 20 mL of 0.9% sodium chloride solution three times daily (morning, afternoon, and evening, with minimum 5-hour interval between administrations).

Treatment:

Drug: Dimephosphon®

Placebo

Placebo Comparator group

Description:

Days 1-3: Placebo 2 g (2 vials) administered as intravenous infusion diluted in 200 mL of 0.9% sodium chloride solution three times daily (morning, afternoon, and evening, with minimum 5-hour interval between administrations). Days 4-14: Placebo 2 g (2 vials) administered as intravenous bolus diluted in 20 mL of 0.9% sodium chloride solution three times daily (morning, afternoon, and evening, with minimum 5-hour interval between administrations).

Treatment:

Drug: Placebo