NCT06170970 · Johns Hopkins University
Solriamfetol for the Treatment of Multiple Sclerosis Fatigue
(SOLARIMS)
What this study is about
Fatigue is a prevalent and disabling symptom in Multiple Sclerosis (MS), affecting up to 90% of patients. Current treatments, including off-label prescriptions of wake-promoting agents, have shown limited effectiveness. Previous research indicates that these agents may be beneficial specifically for MS patients with concomitant excessive daytime sleepiness.
View original scientific description
Fatigue is a prevalent and disabling symptom in Multiple Sclerosis (MS), affecting up to 90% of patients. Current treatments, including off-label prescriptions of wake-promoting agents, have shown limited effectiveness. Previous research indicates that these agents may be beneficial specifically for MS patients with concomitant excessive daytime sleepiness. This study uses a randomized, double-blind, placebo-controlled crossover design. Participants will undergo a 10-day lead-in with he medication/placebo, followed by two four-week treatment periods separated by a one-week washout. Outcomes will be measured primarily using the Modified Fatigue Impact Scale (MFIS), with additional exploratory measures collected via a smartphone app that assesses fatigue through keystroke dynamics. This novel approach to fatigue measurement aims to capture real-time variations and provide more granular data than traditional self-report questionnaires.
Interventions
DRUG
Solriamfetol
solriamfetol 75 mg daily for 3 days and will increase the dose to 150 mg daily starting on day 4 of the treatment period (total of four weeks)
DRUG
Placebo
Four weeks of oral placebo
Primary outcome measures
Modified Fatigue Impact Scale (MFIS) Score
Time frame: Up to 4 weeks
MFIS score measured during the last three days of each 4-week medication period. The total score of the MFIS ranges from 0 to 84. Higher scores denote more severe fatigue.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Male or female, 18 to 60 years of age, inclusive.
- Medically stable on the basis of physical examination, medical history, and vital signs
- Must meet McDonald 2024 diagnostic criteria for multiple sclerosis based on the PI review of the medical records
- Must complain from fatigue as one of their main symptoms and have a screening MFIS score of 33 or more
- A screening ESS score of 10 or more
- Must be ambulatory (able to walk at least 20 feet using bilateral assistance)
- Must have internet and email access and the ability to use a computer or tablet, or smartphone
- Own an android smartphone or an iphone
- Consent to use a medically acceptable method of contraception for the duration of the study
- Willing and able to comply with the study design schedule and other requirements
- Willing and able to provide written informed consent
Exclusion criteria
- History of coronary artery disease or congestive heart failure
- Uncontrolled hypertension at Screening (history of high blood pressure and screening systolic blood pressure \>160 or diastolic blood pressure\>100)
- A known history of uncontrolled diabetes (the last known hemoglobin A1c level above 7.0%), high BMI (\>35), or hyperlipidemia (last known total cholesterol \>240 mg/dl, or LDL cholesterol level \>160 mg/dl)
- Receiving drugs/treatments that increase blood pressure or heart rate (based on the PI review of the medications/treatments)
- A history of cerebrovascular disease or stroke
- A medical or neurological disorder other than MS, that was associated with excessive sleepiness.
- A history of phenylketonuria or hypersensitivity to the phenylalanine-derived product
- A history of alcohol or drug abuse within the past two years
- A history of psychosis, or bipolar disorder
- A history of cardiac arrythmias
- The use of any product with stimulating or sedating properties, unless they have been on a steady dose for at least a month prior to the screening visit and agree to stay on the same dose over the course of the study
- Use within 14 days of a monoamine oxidase (MAO) inhibitor drug
- Pregnant or lactating
- Use of medications used for the treatment of fatigue (including amantadine, modafinil, armodafinil, and amphetamine-like stimulants) in the past two weeks of the screening visit
- A known history of moderate or severe kidney dysfunction (estimated Glomerular filtration rate of less than 60 mL/min)
Where
- Baltimore, Maryland
Collaborators
National Multiple Sclerosis Society, Axsome Therapeutics, Inc.
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 9, 2026 · Source of record for eligibility and locations