15 Clinical Trials for Various Conditions
Introduction Baylor College of Medicine and Texas Children's Hospital are recruiting individuals with MELAS syndrome for a clinical study. MELAS syndrome is a mitochondrial disease; patients with this disease have muscle weakness and often develop brain strokes, where blood does not flow normally to different parts of the brain. It is believed that these strokes could be due to decreased production of nitric oxide, a naturally occurring compound important for normal blood vessel function. Nitric oxide is made from arginine and citrulline that are normally found in our bodies. What is the purpose of this study? The purpose of this study is to measure nitric oxide in individuals with MELAS and see if giving arginine or citrulline will increase the formation of nitric oxide. Nitric oxide is thought to be helpful in preventing strokes. Therefore, if arginine and/or citrulline are shown to increase the formation of nitric oxide, they could be used to prevent or treat the strokes in patients with MELAS syndrome.
Patients with the MELAS syndrome experience devastating mental impairment. This study will evaluate the effectiveness of the drug dichloroacetate (DCA) to reduce the symptoms of MELAS.
This is a parallel arm non-randomized dose-escalation, open-label basket exploratory phase 1 clinical trial where Mitochondrial encephalopathy, lactic acidosis, stroke-like episodes (MELAS) and Leber's hereditary optic neuropathy-Plus (LHON-Plus) participants will undergo simultaneous enrollment in two disease-based arms and receive daily oral doses of glycerol tributyrate to assess its safety and potential for efficacy using clinical, biochemical, and molecular evidence. This study will utilize a two-month baseline lead-in phase to establish and document the clinical baseline for each participant in both arms in order to compare the molecular and clinical parameters. This is clinically relevant in light of the high clinical heterogeneity among subjects affected by the same mitochondrial disease (MELAS or LHON-Plus). For ethical concerns prompted by the lack of treatment for these two intractable and progressive mitochondrial diseases, there will not be a placebo control group. Thus, each participant will act as their own control and receive oral doses of glycerol tributyrate, eliminating the need for a placebo. Considering the high clinical heterogeneity among participants affected by MELAS or LHON-Plus and some clinical divergence between MELAS and LHON-Plus, this strategy is beneficial to every enrolled participants, as each will receive the investigational drug, glycerol tributyrate. In addition, this approach will determine the subject-specific maximal optimized dose in a personalized medicine-based approach. After approval of the IRB protocol from the Institutional Review Board Data and signed consent form from all participants, this investigational basket clinical trial has three phases spanning over 20 months: * A baseline lead-in phase (2 months) to collect participant-specific baseline for clinical, biochemical, molecular and metabolic biomarkers that will be monitored throughout the subsequent dose-escalation and clinical phases. * A dose-escalation phase (6 months) to determine the participant-specific maximum tolerated dose (MTD) during which participant-specific clinical and biochemical biomarkers are collected every month. * A clinical phase at a fixed subject-specific MTD dose (12 months) to collect participant-specific clinical, biochemical, molecular and metabolic biomarkers and to perform three scheduled skin biopsies: at the outset, mid-point, and the end of this clinucal phase. We have planned for a 12-month-long clinical phase at a fixed participant-specific MTD considering the absence of reliable predictors that makes idiosyncratic disease-specific symptoms for MELAS and LHON-Plus impossible to forecast among participant for assessing the potential efficacy of glycerol tributyrate by monitoring clinical symptoms specific for each disease. During the 12-month-long time-frame, disease-specific clinical symptoms will be collected as preliminary evidence of efficacy of glycerol tributyrate using disease-specific biomarkers. Finally, discharge procedure during which the clinical investigator will record non-serious adverse events or serious adverse events for 7 or 30 days, respectively, after the last day of study participation.
PRIZM is a Phase 2b randomized, double-blind, placebo-controlled, 3-treatment, 2-period, crossover study evaluating the efficacy and safety of oral zagociguat 15 and 30 mg vs. placebo when administered daily for 12 weeks in participants with genetically and phenotypically defined MELAS.
The main purpose of this study is to determine the safest maximum dose of an amino acid, citrulline, which will be used as potential treatment for adult patients with a disorder of energy metabolism called Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like episodes (MELAS). Once established, this dose will be used in a future clinical trial.
This pilot clinical study evaluated the safety and metabolic responses to a licensed inactivated seasonal influenza vaccine (TIV) in mitochondrial encephalopathy, lactic acidosis, and stroke-like episodes syndrome (MELAS) volunteers and controls.
The current study is a prospective evaluation of the ability of ketosis to shift mitochondrial DNA (mtDNA) heteroplasmy in subjects harboring a known mutation in their mtDNA at position 3243 (A\>G). Subjects will be given supplemental medium chain triglycerides (MCTs) for a period of 6 months. mtDNA heteroplasmy will be measured 3 months prior to treatment, at treatment initiation, and 6 months after initiation. The primary objective of the current study is to determine if there is a shift in heteroplasmy in patients harboring the 3243 A\>G mtDNA mutation to a more favorable (higher wild-type) profile while in a state of ketosis.
The purpose of this study is to compare the efficacy of two (2) different doses of idebenone with that of a placebo over a one month period on cerebral lactate concentration as measured by magnetic resonance spectroscopy.
OBJECTIVES: I. Study the metabolism of pyruvate and related problems in patients with lactic acidemia. II. Define the nature of the metabolic defect.
The North American Mitochondrial Disease Consortium (NAMDC) maintains a patient contact registry and tissue biorepository for patients with mitochondrial disorders.
A long-term extension study to assess the safety, tolerability and efficacy of cysteamine bitartrate delayed-release capsules (RP103) in children with inherited mitochondrial diseases who previously enrolled into study RP103-MITO-001 (NCT02023866).
This is a parallel-arm, double-blind, placebo-controlled study with a screening phase that includes a 28-day run-in phase to establish baseline seizure frequency, followed by a 24-week, randomized, placebo-controlled phase. After completion of the randomized, placebo-controlled phase, participants may enter a 48-week, long-term, extension phase during which they will receive open-label treatment with vatiquinone.
The investigators are studying patients with undefined mitochondrial diseases to identify genetic mutations in nuclear or mitochondrial Deoxyribonucleic Acid (DNA). Most patients with suspected or known mitochondrial diseases have no genetic confirmation. The investigators expect that evaluating tissue samples from patients with mitochondrial disorders will lead us to discover mutations in new or known genes causing mitochondrial dysfunction.
The primary objective of this study is to assess the safety of vatiquinone in participants with inherited mitochondrial disease who had prior exposure to vatiquinone in a PTC/BioElectron sponsored (previously Edison) clinical study or treatment plan. The study will continue until vatiquinone becomes commercially available or the program is terminated.
This study will evaluate the safety and efficacy of EPI-743 in participants with severe mitochondrial respiratory chain diseases who are considered to be within 90 days of end-of-life care.