# The Onyx™ Trial For The Embolization Of The Middle Meningeal Artery For Chronic Subdural Hematoma

> **NCT04742920** · NA · TERMINATED · sponsor: **University Hospital, Montpellier** · enrollment: 247 (actual)

## Conditions studied

- Hematoma, Subdural, Chronic
- Brain Diseases
- Central Nervous System Diseases
- Wounds and Injuries

## Interventions

- **DEVICE:** Middle Meningeal Artery Embolization
- **PROCEDURE:** Standard Management

## Key facts

- **NCT ID:** NCT04742920
- **Lead sponsor:** University Hospital, Montpellier
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2021-10-12
- **Primary completion:** 2025-05-28
- **Final completion:** 2025-05-28
- **Target enrollment:** 247 (ACTUAL)
- **Why stopped:** The DSMB recommended to stop the study after the interim analysis, as the results shown a superiority of the embolization arm. 247 patient were finally enrolled.
- **Last updated:** 2025-07-15


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04742920

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04742920, "The Onyx™ Trial For The Embolization Of The Middle Meningeal Artery For Chronic Subdural Hematoma". Retrieved via AI Analytics 2026-05-29 from https://api.ai-analytics.org/clinical/NCT04742920. Licensed CC0.

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