lactic acidosis and stroke-like episodes (MELAS), Mitochondrial encephalomyopathy
Conditions
Brief summary
The primary outcome measure will be “change in functional capacity” based upon the 12-minute walking test (12-MWT) from Day 1/Baseline to Week 24/Study Exit, Safety and tolerability endpoints include the incidence, severity and relationship of adverse events; change in clinical laboratory parameters, physical exam findings, vital signs, 12-lead electrocardiography and seizure activity.
Detailed description
Efficacy: Change over time as measured at Day 1/Baseline, Weeks 4, 8, 12, 16, 20 and Week 24/Study Exit: - Fatigue Severity Scale (FSS); - Quality of Life (WHOQOL-BREF), PK parameters will be determined for cysteamine, pantothenic acid (vitamin B5) and taurine, PD: Change over time as measured at Day 1/Baseline, Weeks 4, 8, 12, 16, 20 and Week 24/Study Exit for pharmacodynamic biomarkers: glutathione, glutathione disulfide, lactate, pyruvate, GDF-15, FGF21, amino acid panel (including alanine).
Interventions
Sponsors
Eligibility
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary outcome measure will be “change in functional capacity” based upon the 12-minute walking test (12-MWT) from Day 1/Baseline to Week 24/Study Exit, Safety and tolerability endpoints include the incidence, severity and relationship of adverse events; change in clinical laboratory parameters, physical exam findings, vital signs, 12-lead electrocardiography and seizure activity. | — |
Secondary
| Measure | Time frame |
|---|---|
| Efficacy: Change over time as measured at Day 1/Baseline, Weeks 4, 8, 12, 16, 20 and Week 24/Study Exit: - Fatigue Severity Scale (FSS); - Quality of Life (WHOQOL-BREF), PK parameters will be determined for cysteamine, pantothenic acid (vitamin B5) and taurine, PD: Change over time as measured at Day 1/Baseline, Weeks 4, 8, 12, 16, 20 and Week 24/Study Exit for pharmacodynamic biomarkers: glutathione, glutathione disulfide, lactate, pyruvate, GDF-15, FGF21, amino acid panel (including alanine). | — |
Countries
France, Netherlands