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ABSTRACT: Background
Fatigue is the most common symptom of MS and has no effective pharmacotherapy.Objective
To determine the tolerability, safety, and efficacy of low-dose ketamine infusion for MS-related fatigue.Methods
In this double-blind, randomized, active-placebo-controlled trial, 18 subjects with multiple sclerosis (MS) and reported fatigue received a single intravenous infusion of ketamine (0.5 mg/kg) or midazolam (0.05 mg/kg). The primary outcome was change in Daily Fatigue Severity (DFS) for 7 days following the infusion. Secondary outcomes included Fatigue Severity Scale (FSS) and Modified Fatigue Impact Scale (MFIS) measured up to day 28 post-infusion. We analyzed changes in all outcomes using mixed-effect models.Results
In total, 18 participants were enrolled; 67% participants received ketamine. Side effects of ketamine were transient. No change in the DFS was observed after 7 days (-0.10 point; 95% confidence interval (CI): -0.32, 0.12; p = 0.40). We observed a trend in reduced FSS scores at 1 week (-5.2 points; 95% CI: -10.4, 0.14; p = 0.06) and a clinically and statistically significant reduction in MFIS score at day 28 (-13.5 point; 95% CI: -25.0, -1.98; p = 0.04).Conclusions
Ketamine infusions were safe and well-tolerated. While no change in DFS after 7 days was observed, secondary analyses suggest a benefit of ketamine infusion for reduction of longer term fatigue severity in people with MS.
SUBMITTER: Fitzgerald KC
PROVIDER: S-EPMC7790846 | biostudies-literature | 2021 May
REPOSITORIES: biostudies-literature
Fitzgerald Kathryn C KC Morris Bridget B Soroosh Aurash A Balshi Alexandra A Maher Dermot D Kaplin Adam A Nourbakhsh Bardia B
Multiple sclerosis (Houndmills, Basingstoke, England) 20200707 6
<h4>Background</h4>Fatigue is the most common symptom of MS and has no effective pharmacotherapy.<h4>Objective</h4>To determine the tolerability, safety, and efficacy of low-dose ketamine infusion for MS-related fatigue.<h4>Methods</h4>In this double-blind, randomized, active-placebo-controlled trial, 18 subjects with multiple sclerosis (MS) and reported fatigue received a single intravenous infusion of ketamine (0.5 mg/kg) or midazolam (0.05 mg/kg). The primary outcome was change in Daily Fatig ...[more]