Study of Idebenone in the Treatment of Mitochondrial Encephalopathy Lactic Acidosis & Stroke-like Episodes (MELAS)
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||A Phase IIa Double-Blind, Randomized, Placebo-Controlled, Dose-Finding Study of Idebenone in the Treatment of Mitochondrial Encephalopathy Lactic Acidosis and Stroke-like Episodes|
- Mean Change in Cerebral Lactate Concentration (as Measured by Magnetic Resonance Spectroscopy) [ Time Frame: Up to 4 weeks from baseline ]To compare the efficacy of 1 month treatment with 2 different doses of idebenone with that of placebo on cerebral lactate concentration as measured by magnetic resonance spectroscopy (MRS)
- Mean Change in Venous Lactate Concentration [ Time Frame: Up to 4 weeks from baseline ]To compare the efficacy of 1 month treatment with 2 different doses of idebenone with that of placebo on venous lactate concentration
- Mean Change in Score on the Fatigue Severity Scale (FSS) [ Time Frame: Baseline and Week 4 ]
To assess changes following 1 month treatment with 2 different doses of idebenone with that of placebo in fatigue as assessed by the Fatigue Severity Scale (FSS).
Scale score minimum is 9 (least fatigue) and maximum is 63 (maximum fatigue). Scores of 36 or less indicate possibility that patient may not be suffering from fatigue, while scores 36 and over suggest suffering from fatigue
|Study Start Date:||May 2009|
|Study Completion Date:||July 2012|
|Primary Completion Date:||July 2012 (Final data collection date for primary outcome measure)|
Experimental: Idebenone 900 mg/day
Idebenone 900 mg/day
900 mg/day for 1 month
Other Name: active drug
Experimental: Idebenone 2250 mg/day
Idebenone 2250 mg/day
2250 mg/day for 1 month
Other Name: active drug
Placebo Comparator: placebo
Placebo - No idebenone
Other Name: No active drug
MELAS (Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-Like Episodes), a progressive and often devastating multisystem disorder, is most commonly associated with mitochondrial Deoxyribonucleic acid (mtDNA) point mutation at nucleotide 3243. Seizures, cognitive deterioration, and neurobehavioral abnormalities are frequent features of this disease which typically shortens life expectancy. Idebenone, an ATP production modulator and antioxidant, improves neurological function in Friedreich's ataxia, a disease also associated with mitochondrial dysfunction.
Given that there is no effective treatment for MELAS, the investigators propose a Phase II proof of concept trial of idebenone to study its preliminary efficacy in patients with MELAS and the A3243G mtDNA mutation, and to study its safety and tolerability in this patient group.
The investigators propose to evaluate 21 patients with the A3243G mitochondrial DNA mutation and MELAS (defined by a history of either seizures or stroke). Patients will receive idebenone (900 mg/day or 2250 mg/day) or matching placebo for one month. The primary outcome measure is cerebral lactate levels measured by Magnetic Resonance Spectroscopy (MRS), a biomarker associated with disease worsening. This study will help the investigators to determine if there is sufficient signal to proceed to efficacy studies. Also it will provide additional information on the safety and tolerability of two different doses of idebenone in MELAS.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00887562
|United States, New York|
|Columbia University Medical Center|
|New York, New York, United States, 10032|
|Principal Investigator:||Michio Hirano, MD||Columbia University|