Study of a New Generation Botulinum Toxin A2NTX to Treat Spasticity After Stroke

NCT ID: NCT01910363

Last Updated: 2014-01-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

PHASE2/PHASE3

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-07-31

Brief Summary

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To test the safety and efficacy of a new generation botulinum toxin preparation A2NTX for treating stroke patients with lower limb spasticity.

* we study the degree of spasticity in the ankle and knee joints, and walking speed in 30 patients with stroke before and after injecting 300 units of BOTOX or A2NTX in a blinded manner as for the patient, the physician, and the examiner.
* we also assess the safety of A2NTX and compare it to that of BOTOX.

Detailed Description

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Conditions

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Lower Limb Spasticity After Stroke

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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A2NTX

single intramuscular injection of 300 units of A2NTX, a purified low molecular weight (150 kDalton) botulinum toxin preparation of type A2

Group Type EXPERIMENTAL

A2NTX

Intervention Type DRUG

Intramuscular injection of the botulinum toxin preparation in 300 units (mouse LD50) into tibialis posterior and medial gastrocnemius muscles on the affected side.

BOTOX

single intramuscular injection of 300 units of BOTOX®, a commercially available botulinum toxin preparation of type A1

Group Type ACTIVE_COMPARATOR

BOTOX

Intervention Type DRUG

Intramuscular injection of the botulinum toxin preparation in 300 units (mouse LD50) into tibialis posterior and medial gastrocnemius muscles on the affected side.

Interventions

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A2NTX

Intramuscular injection of the botulinum toxin preparation in 300 units (mouse LD50) into tibialis posterior and medial gastrocnemius muscles on the affected side.

Intervention Type DRUG

BOTOX

Intramuscular injection of the botulinum toxin preparation in 300 units (mouse LD50) into tibialis posterior and medial gastrocnemius muscles on the affected side.

Intervention Type DRUG

Other Intervention Names

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A2NTX:low molecular weight (150kDalton) purified botulinum toxin type A2 preparation BOTOX®:onabotulinumtoxinA (Allergan Co Ltd), commercially available botulinum toxin type A1

Eligibility Criteria

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Inclusion Criteria

* patients with lower limb spasticity after stroke
* duration more than 6 months
* Modified Ashworth Scale of ankle joint more than 2

Exclusion Criteria

* patients with previous botulinum toxin injections to lower limbs
* patients with serious hepatic, renal or cardiac dysfunction
* patients with respiratory failure
* patients who cannot understand the instructions
Minimum Eligible Age

40 Years

Maximum Eligible Age

79 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Ministry of Health, Labour and Welfare, Japan

OTHER_GOV

Sponsor Role collaborator

University of Tokushima

OTHER

Sponsor Role lead

Responsible Party

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Ryuji Kaji

Professor and Chairman, Department of Neurology

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Tokushima University Hospital

Tokushima, Tokushima, Japan

Site Status

Countries

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Japan

References

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Kaji R. Clinical differences between A1 and A2 botulinum toxin subtypes. Toxicon. 2015 Dec 1;107(Pt A):85-8. doi: 10.1016/j.toxicon.2015.09.025. Epub 2015 Sep 21.

Reference Type DERIVED
PMID: 26394198 (View on PubMed)

Other Identifiers

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TU001

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

A1A2BONT

Identifier Type: -

Identifier Source: org_study_id

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