Coenzyme Q10 in Adult-Onset Ataxia (CoQATAX)
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ClinicalTrials.gov Identifier: NCT00957216 |
Recruitment Status :
Completed
First Posted : August 12, 2009
Last Update Posted : July 11, 2018
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Condition or disease | Intervention/treatment | Phase |
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Sporadic Ataxia | Drug: Placebo (sugar pill) Drug: Coenzyme Q10 | Phase 1 |
This is a Physician-sponsored pilot study, whose purpose it is determine if high-dose oral Coenzyme Q10 (CoQ10) is safe and tolerated in patients with sporadic forms of adult-onset spinocerebellar ataxias (SAOA), a group of degenerative neurological disorders affecting the cerebellum and pathways to and from the cerebellum, with or without additional central nervous system (CNS) manifestations, in the absence of family history of degenerative ataxias.
CoQ10 is an essential cofactor of the electron transport chain and is a potent free radical scavenger in lipid and mitochondrial membranes. CoQ10 has shown efficacy in treatment of Parkinson's disease patients, and a Huntington's disease trial gave a trend of slowing down disease progression (CARE-HD). A small trial of CoQ10 in patients with Friedreich's ataxia suggested potential beneficial effects on ventricular thickness. CoQ10 is being tested on ALS patients and is considered to be potentially useful for treatment of Alzheimer's disease. Thus, CoQ10 is considered to be a promising therapeutic agent that might slow down the disease progression in a wide variety of neurodegenerative disorders. To date, very high doses of CoQ10 have not been used in patients with ataxia and the safety and tolerability in this group of patients should be established before efficacy trials are launched.
Twenty patients with SAOA will be recruited for a double-blind, randomized, placebo-controlled, multicenter study. Fifteen patients will receive a total of 2400 mg of oral CoQ10 daily, and five patients will receive placebo, for a period or 4 weeks. Cerebellar functions will be measured using a validated rating scale (SARA), an oculomotor examination, and functional measurement of motor function using a 9 hole peg test and timed walk. Safety labs will be collected and a digital movie will be recorded at the beginning (prior to treatment with CoQ10) and at the end of the study.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 1 participants |
Allocation: | Randomized |
Intervention Model: | Single Group Assignment |
Masking: | Triple (Participant, Care Provider, Investigator) |
Primary Purpose: | Supportive Care |
Official Title: | Safety and Tolerability of Coenzyme Q10 in Adult-Onset Sporadic Spinocerebellar Ataxia |
Study Start Date : | April 2008 |
Actual Primary Completion Date : | August 2009 |
Actual Study Completion Date : | August 2009 |

Arm | Intervention/treatment |
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Placebo Comparator: sugar pill |
Drug: Placebo (sugar pill)
placebo: 2 wafers 4 times a day |
Active Comparator: Coenzyme Q10
The CoQ10 arm will be compared with the placebo arm to determine if high-dose CoQ10 is safe and well tolerated in subjects with sporadic adult-onset spinocerebellar ataxias
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Drug: Coenzyme Q10
300mg wafers; 2 wafers 4 times a day
Other Name: CoQ10 |
- Measure cerebellar functions by a validated scale (SARA) [ Time Frame: 6 weeks ]

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Ages Eligible for Study: | 18 Years to 80 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Diagnosis of SAOA
- Age 18 or older
- Adult onset of ataxia
- Ambulatory capability (with or without an assisting device)
- Women with 2 years post menopause or surgical sterility or practicing adequate birth control
- Stable doses of psychotropic drugs
- Stable doses of drugs for movement disorders
- Ability to give informed consent
- Ability to comply with trial procedures
- Able to take oral medication
- No active and significant systemic disease (cardiac, pulmonary, hepatic, renal disease or cancer) that is not under adequate medical control
- Women with child-bearing potential who have a negative urine pregnancy test and practice adequate contraception during the study
Exclusion Criteria:
- A history or known sensitivity of intolerability to Coenzyme Q10
- Diagnosis of secondary (non-degenerative) ataxia
- Family history of degenerative ataxia
- Diagnosis of childhood-onset ataxia
- DNA diagnosis of inherited ataxia in the absence of family history
- Other investigational agent within 30 days of screening
- Ingestion of Coenzyme Q10 within 120 days of the baseline visit
- Diagnosis of ongoing malignancy
- Women who are pregnant or lactating or who have child bearing potential and not using effective birth control
- Uncontrolled hypertension
- Symptomatic orthostatic hypotension
- Uncontrolled diabetes mellitus
- Untreated thyroid disease
- Major psychiatric disease within 12 months of screening
- History of non-compliance with other therapies
- Drug or alcohol abuse within 12 months of screening
- Other condition or therapy that may prevent participation in the opinion of the investigator

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00957216
United States, Texas | |
The Universtity of Texas, Galveston | |
Galveston, Texas, United States, 77555-0539 |
Principal Investigator: | Sankarasubramoney H Subramony, MD | University of Texas Medical Branch, Galveston |
Responsible Party: | The University of Texas Medical Branch, Galveston |
ClinicalTrials.gov Identifier: | NCT00957216 |
Other Study ID Numbers: |
08-129 08-SAOA-001 |
First Posted: | August 12, 2009 Key Record Dates |
Last Update Posted: | July 11, 2018 |
Last Verified: | April 2010 |
adult onset ataxia |
Ataxia Cerebellar Ataxia Dyskinesias Neurologic Manifestations Nervous System Diseases Cerebellar Diseases Brain Diseases Central Nervous System Diseases |
Ubiquinone Coenzyme Q10 Micronutrients Nutrients Growth Substances Physiological Effects of Drugs Vitamins |