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New injection for neck spasms tested in 500 patients

NCT ID NCT00702754

Symptom relief Sponsor: Solstice Neurosciences, LLC, a subsidiary of US WorldMeds, LLC Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at the safety and immune response of MYOBLOC (botulinum toxin type B) injections in 502 adults with cervical dystonia, a condition causing painful neck muscle spasms. Participants received injections and were monitored for about 12 weeks. The goal was to see if the treatment was safe and how the body's immune system reacted.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

502 people

The number who actually took part.

Start date

Jun 2001

Finished

Sep 2008

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * 18 years of age or older * body weight of at least 46 kilograms * History of Cervical Dystonia of at least one year's duration who in the opinion of the Investigator requires treatment Exclusion Criteria: * Inability to give informed consent * Patient who has been previously treated with botulinum Toxin Type B * Patient who has received a Botulinum toxin Type A injection in the last 12 weeks. * History of phenol injections involving the neck or shoulder region in the last 12 months. * Patients with neck contractures or cervical spine disease

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Conditions

The condition(s) this trial relates to.

cervical dystonia Torticollis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Cervical dystonia

More trials for these conditions

Other studies related to the condition(s) this trial covers.