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Multiple SclerosisPhase 3OS440-3005NCT03319732

A Study to Evaluate the Long-term Safety of Arbaclofen Extended-Release Tablets for Patients With Spasticity Due to MS

A Phase 3 study testing Arbaclofen in people with Multiple Sclerosis and Spasticity, Muscle, run by RVL Pharmaceuticals, Inc. at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Spasticity is a common complication in MS and occurs in up to 84% of patients. The main sign of spasticity is resistance to passive limb movement characterized by increased resistance to stretching, clonus, and exaggerated deep reflexes. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Multiple Sclerosis, Spasticity, Muscle
What is being tested?
Arbaclofen
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
323 participants
Where
1 siteUnited States
Study dates
3 Apr 2018to 11 Jun 2020
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Subjects 18 to 65 years of age, inclusive.
  • An established diagnosis per McDonald Criteria (Polman et al 2011) of MS (either relapsing-remitting [RR] or secondary-progressive [SP] course) that manifests a documented history of spasticity for at least 6 months prior to Baseline.
  • Has participated in Study OS440-3004 or is a new US subject (ie, a de novo subject) who fulfills the inclusion/exclusion criteria.
  • Is willing to continue on open-label treatment with AERT as described in this protocol.
  • If receiving disease-modifying medications (eg, interferons approved for MS, glatiramer acetate, natalizumab, fingolimod, or mitoxantrone), there must be no change in dose for at least 3 months prior to Baseline, and the subject must be willing to maintain this treatment dose for the duration of the study. If receiving AMPYRA® (dalfampridine, fampridine, 4 amino pyridine), subject must be at a stable dose for at least 3 months prior to Baseline.
  • Stable regimen for at least 1 month prior to Baseline for all medications and non pharmacological therapies that are intended to alleviate spasticity.
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  • De novo subjects being considered for enrollment and taking medications indicated for the treatment of spasticity (ie, baclofen, benzodiazepines, cannabinoids, carisoprodol, dantrolene, tizanidine, cyclobenzaprine, any neuroleptic, ropinoprole, tolperisone, and clonidine) must wash out from these medications for a minimum of 21 days by Baseline in order to be eligible for study treatment. De novo subjects found not to meet this criterion will be withdrawn from the study and will be considered screen failures.
  • Absence of infections, peripheral vascular disease, painful contractures, advanced arthritis, or other conditions that hinder evaluation of joint movement.
  • Creatinine clearance, as calculated by the glomerular filtration rate (GFR) using the Modification of Diet in Renal Disease Study (MDRD) formula, of >50 mL/minute.
  • Use of a medically highly effective form of birth control (see Section 7.8 of the protocol) during the study and for 3 months thereafter for women of child-bearing potential (including female subjects).
  • Willing to sign the informed consent form (ICF).

Who cannot join

  • Any concomitant disease or disorder that has symptoms of spasticity or that may influence the subject's level of spasticity.
  • Inability to rate their level of spasticity or distinguish it from other MS symptoms.
  • Use of high dose oral or intravenous methylprednisolone, or equivalent, within 3 months before Baseline.
  • History of allergy to baclofen or any inactive components of the test formulation.
  • Concomitant use of medications that would potentially interfere with the actions of the study medication or outcome variables (Appendix 5).
  • Pregnancy, lactation, or planned pregnancy during the course of the study and for 3 months after the final study visit.
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  • Recent history (within past 12 months) of any unstable psychiatric disease (or yes response to questions 1 or 2 on the Columbia Suicide Severity Rating Scale [C SSRS] at baseline), or current signs and symptoms of significant medical disorders such as severe, progressive, or uncontrolled pulmonary, cardiac, gastrointestinal, hepatic, renal, genitourinary, hematological, endocrine, immunologic, or neurological disease.
  • History of epilepsy.
  • Current significant cognitive deficit, severe or untreated anxiety, severe or untreated depression.
  • Subjects with abnormal micturition that requires indwelling or intermittent catheterization or with lower urinary tract symptoms (LUTS) that result in a score >26 in the Baseline Urinary Symptom Profile - USP© (USP) questionnaire (Appendix 6). Subjects who are proficient in self-catheterization may be included in the study at the investigator's discretion.
  • Current malignancy or history of malignancy that has not been in remission for more than 5 years, except effectively treated basal cell skin carcinoma.
  • Subject has clinically significant abnormal laboratory values, in the opinion of the investigator at Baseline (at Visit 6 for rollover subjects).
  • Any other significant disease, disorder, or significant laboratory finding, including clinically significant abnormal laboratory values or ongoing serious adverse events (SAEs) at Visit 6 (Final Visit) of Study OS440-3004, which, in the opinion of the investigator, puts the subject at risk because of participation, influences the result of the study, or affects the subject's ability to participate.
  • Planned elective surgery or other procedures requiring general anesthesia during the course of the study.
  • History of any illicit substance abuse (eg, alcohol, marijuana, cocaine) or prescription for long-acting opioids within the past 12 months (tramadol use will be allowed).
  • Participation in another clinical research study (with the exception of Study OS440-3004) within 1 month of Baseline.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Neuro Pain Medical Center

    Fresno, California, 93710

Other trials in United States

About this study

Official title: An Open-Label Study to Evaluate the Long-Term Safety of Arbaclofen Extended-Release Tablets in Multiple Sclerosis Patients With Spasticity (Study OS440-3005)

Spasticity is a common complication in MS and occurs in up to 84% of patients. The main sign of spasticity is resistance to passive limb movement characterized by increased resistance to stretching, clonus, and exaggerated deep reflexes. Osmotica Pharmaceutical is currently developing arbaclofen extended-release tablets (AERT) for the treatment of spasticity in patients with MS.

Read the detailed description

This is a multicenter, open-label, long-term extension study to evaluate the safety and tolerability of oral AERT in patients with spasticity due to MS. Subjects from the double blind study (Study OS440-3004) may rollover into this open-label extension study, as well as de novo subjects. The maintenance dose will be 80 mg/day or the highest tolerated dose. Once the subject has reached the maintenance dose, they will remain on that dose for approximately 1 year.

Being tested
Arbaclofen
Medical subject headings
Multiple Sclerosis, Muscle Spasticity

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ArbaclofenDrug

    Also called AERT

    Arbaclofen is the active R enantiomer of baclofen.

Study groups in NCT03319732
Study groupRoleWhat they receive
AERT 80 mgExperimentalArbaclofen extended release tablet, 20 mg
Receives: Drug: Arbaclofen

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With Adverse Events, Change in Vital Signs, Clinical Laboratory Test Results, 12-lead ECGs, USP Questionnaire, and C-SSRS Results

    Safety and tolerability will be assessed by the monitoring of adverse events volunteered, observed, and elicited by general questions in a non-suggestive manner. Changes in vital signs, clinical laboratory test results, 12-lead ECGs, the urinary symptom profile (USP) questionnaire, and the C-SSRS results will also be assessed.

    Measured: over 1 year

Secondary outcomes (3)
  1. Patient Global Impression of Change (PGIC)

    Patient Global impression of Change (PGIC) is a scale to evaluate the change in activity limitations, symptoms, emotions, and overall quality of life using scores from 1 to 7 with 1 being no change and 7 being a great deal better, and a considerable improvement that has made all the difference. Minimum value is 1 and the maximum value is 7.

    Measured: week 60

  2. Total Numeric-transformed Modified Ashworth Scale Score or the Most Affected Limb (TNmAS-MAL)

    The abbreviated scale title is TNmAS. It is considered the primary clinical measure of muscle spasticity in subjects with neurological conditions. It is a useful 6-point rating scale (0 to 5) to measure abnormality in tone or the resistance to passive movements. Minimum value is 0 and maximum value is 5. A higher score means a worse outcome.

    Measured: week 28

  3. Expanded Disability Status Scale (EDSS)

    Expanded Disability Status Scale (EDSS) is a method of quantifying disability in MS and monitoring changes in the level of disability over time. The EDSS scale ranges from 0 to 10 in 0.5-unit increments that represent higher levels of disability. A score of 0 represents a normal neurological exam, and 10 represents death due to MS.

    Measured: week 60

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted24 Oct 2017
  2. Study start3 Apr 2018
  3. Primary completion27 Jan 2020
  4. Study completion11 Jun 2020

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
323 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03319732
Sponsor's protocol ID
OS440-3005
Acronym
OS440-3005
Status last verified
Feb 2022
First submitted
13 Oct 2017
Last updated
9 Aug 2022
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • Okuda DT, Kantor D, Jaros M, deVries T, Hunter S. Arbaclofen extended-release tablets for spasticity in multiple sclerosis: open-label extension study. Brain Commun. 2023 Feb 7;5(1):fcad026. doi: 10.1093/braincomms/fcad026. eCollection 2023.

    PubMed 36861013

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Arbaclofen in people with Multiple Sclerosis and Spasticity, Muscle, run by RVL Pharmaceuticals, Inc. at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 11 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 9 Aug 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 15 Jul 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With Adverse Events, Change in Vital Signs, Clinical Laboratory Test Results, 12-lead ECGs, USP Questionnaire, and C-SSRS Results (time frame: over 1 year). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03319732, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Aug 2022.

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