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Study to Compare the Efficacy and Safety of NT 201 (Botulinum Toxin) With Placebo for the Treatment of Lower Limb Spasticity Caused by Stroke or Traumatic Brain Injury

NCT03992404 · Status: ACTIVE_NOT_RECRUITING · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 603

Last updated 2026-05-22

No results posted yet for this study

Summary

The purpose of this study is to determine whether a single treatment with administration of 400 Units NT 201 (botulinum toxin) is superior to placebo (no medicine) for the treatment of lower limb spasticity caused by stroke or traumatic brain injury (Main Period). Participants will be assigned to the treatment groups by chance and neither the participants nor the research staff who interact with them will know the allocation.

The following 4 to 5 treatment cycles will investigate the safety and tolerability of treatment with NT 201 (botulinum toxin) when administered in doses between 400 and 800 Units (Open Label Extension Period). All participants will receive the treatment and the dose will depend on whether only lower limb spasticity or combined upper and lower limb spasticity are treated.

Conditions

  • Lower Limb or Combined Lower Limb and Upper Limb Spasticity Due to Stroke or Traumatic Brain Injury

Interventions

DRUG

NT 201

Active ingredient: Clostridium Botulinum neurotoxin Type A free from complexing proteins. Solution for injection prepared by reconstitution of powder with 0.9% Sodium Chloride (NaCl).

DRUG

Placebo

Solution for injection prepared by reconstitution of powder with 0.9% Sodium Chloride (NaCl).

Sponsors & Collaborators

  • Merz Pharmaceuticals GmbH

    lead INDUSTRY

Principal Investigators

  • Merz Medical Expert · Merz Pharmaceuticals GmbH

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
85 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2019-09-16
Primary Completion
2025-06-19
Completion
2027-04-30
FDA Drug
Yes

Countries

  • United States
  • Belgium
  • Canada
  • Czechia
  • France
  • Germany
  • Hungary
  • Italy
  • Poland
  • Russia
  • Slovakia
  • Spain
  • Switzerland
  • Ukraine
  • United Kingdom

Study Locations

More Related Trials

Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03992404 on ClinicalTrials.gov