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Ketamine for Multiple Sclerosis Fatigue

Low-Dose Ketamine Infusion for the Treatment of Multiple Sclerosis Fatigue (INKLING-MS)

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05378100
Acronym
INKLING-MS
Enrollment
110
Registered
2022-05-18
Start date
2023-01-01
Completion date
2026-10-01
Last updated
2026-05-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Multiple Sclerosis Fatigue

Brief summary

The proposed study is a single-center, phase II, randomized, double-blind, parallel-group, active-placebo-controlled trial of intravenous low-dose ketamine in patients with MS fatigue.

Interventions

DRUGKetamine

Infusion of ketamine 0.5 mg/kg over 40 minutes

DRUGMidazolam

Infusion of midazolam 0.05 mg/kg over 40 minutes

Sponsors

Johns Hopkins University
Lead SponsorOTHER
United States Department of Defense
CollaboratorFED

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Subject must be a man or woman, 18 to 65 years of age, inclusive. * Subject must be medically stable based on physical examination, medical history, and vital signs * Subject must meet McDonald 2017 diagnostic criteria for multiple sclerosis based on the PI review of the medical records * Subject must complain from fatigue as one of their main symptoms and have a screening MFIS score equal or higher than the cutoff based on gender, age, and education displayed in Table-226 * Subject must be ambulatory (able to walk at least 20 feet using bilateral assistance) * Subject must have internet and email access and ability to use a computer or tablet or smartphone * Subjects that are currently taking medication for alleviating fatigue (such as amantadine, modafinil and armodafinil, and amphetamine-like psychostimulants) at Screening are eligible to participate unless the medication is one of the disallowed therapies (Table 3). Subjects taking a fatigue medication at the Screening visit must have been receiving a stable dose for at least four weeks before the Screening visit and be willing to continue the medication at the same dose for the duration of the study.

Exclusion criteria

* BDI-II score of more than 29 (indicating severe depression) * Having a known clear cause for secondary fatigue, such as untreated sleep apnea, untreated hypothyroidism, chronic liver disease, history of moderate to severe anemia (hemoglobin concentration of less than 9 gr/dl in men or less than 8 gr/dl in women). * Neurodegenerative disorders other than relapsing or progressive MS * Breastfeeding or pregnant * 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) * History of severe liver disease, including cirrhosis * Terminal medical conditions * Currently treated for active malignancy * Alcohol or substance abuse in the past year (except marijuana or other cannabinoids) * A history of intolerance or allergic or anaphylactic reaction to ketamine or midazolam * Clinically unstable medical or psychiatric disorders that require acute treatment as determined by the PI * History of severe or untreated coronary artery disease or history of congestive heart failure * History of prior ischemic or hemorrhagic stroke and cerebral vascular aneurysms. * History of recurrent seizures or epilepsy * Taking any disallowed therapy(ies), as noted in the protocol.

Design outcomes

Primary

MeasureTime frameDescription
Modified Fatigue Impact Scale (MFIS) ScoreBaseline (infusion visit) through four weeks after the infusion.The total score of the MFIS ranges from 0 to 84. Higher scores denote more severe fatigue.

Secondary

MeasureTime frameDescription
Fatigue Severity Scale (FSS)Baseline (infusion visit) through four weeks after the infusion.The total score of the FSS ranges from 1 to 7. Higher scores denote more severe fatigue.
Epworth Sleepiness Scale (ESS)Baseline (infusion visit) through four weeks after the infusion.The total score of the ESS ranges from 0 to 24. Higher scores denote more severe sleepiness.
Beck Depression Inventory-II (BDI-II)Baseline (infusion visit) through four weeks after the infusion.The total score of the BDI-IIranges from 0 to 63. Higher scores denote more severe depression.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORBardia Nourbakhsh, MD

Johns Hopkins University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 29, 2026