# Longitudinal Study for Treatment With Botulinum Toxin A Injections in naïve and Pre-treated Patients Suffering From Cervical Dystonia [CD-NIS-Longterm]

> **NCT01840462** · — · COMPLETED · sponsor: **Ipsen** · enrollment: 372 (actual)

## Conditions studied

- Cervical Dystonia

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01840462
- **Lead sponsor:** Ipsen
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2012-07
- **Primary completion:** 2015-11
- **Final completion:** 2016-03
- **Target enrollment:** 372 (ACTUAL)
- **Last updated:** 2019-01-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01840462

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01840462, "Longitudinal Study for Treatment With Botulinum Toxin A Injections in naïve and Pre-treated Patients Suffering From Cervical Dystonia [CD-NIS-Longterm]". Retrieved via AI Analytics 2026-06-03 from https://api.ai-analytics.org/clinical/NCT01840462. Licensed CC0.

---

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