# Open-label Extension Study in Paediatric Patients Who Have Completed the MEX-NM-301 Study.

> **NCT04622553** · NA · ACTIVE_NOT_RECRUITING · sponsor: **Lupin Ltd.** · enrollment: 14 (estimated)

## Conditions studied

- Myotonic Disorders

## Interventions

- **DRUG:** Mexiletine

## Key facts

- **NCT ID:** NCT04622553
- **Lead sponsor:** Lupin Ltd.
- **Sponsor class:** INDUSTRY
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2021-11-05
- **Primary completion:** 2026-01-26
- **Final completion:** 2026-03-12
- **Target enrollment:** 14 (ESTIMATED)
- **Last updated:** 2025-07-25


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04622553

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04622553, "Open-label Extension Study in Paediatric Patients Who Have Completed the MEX-NM-301 Study.". Retrieved via AI Analytics 2026-06-22 from https://api.ai-analytics.org/clinical/NCT04622553. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*