Open-Label Trial of Sulforaphane in Premutation Carriers With FXTAS

NCT ID: NCT05233579

Last Updated: 2023-07-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

15 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-06-25

Study Completion Date

2023-01-01

Brief Summary

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FXTAS is a rare genetic progressive neurodegenerative disorder, linked to a trinucleotide repeat expansion in the FMR1 gene. FXTAS is characterized by tremor and ataxia in addition to atrophy and white matter disease in the central nervous system (CNS). In addition to the major clinical observations of intention tremor and gait dysfunction, minor symptoms of parkinsonism, neuropathy, and cognitive decline also significantly impact individuals with FXTAS.

The dietary supplement being tested in this study is called Sulforaphane. It is found in broccoli and similar cruciferous vegetables and may cause some gas and discomfort. This is not a study looking at clinical efficacy but instead a study of molecular outcome measures. Investigators want to get more information about how Sulforaphane affects specific biomolecular markers captured in blood.

In this study, participants will be taking an increasing amount of the Sulphoraphane supplement pills (238mg/tablet), starting at 1 and increasing to 6, every morning at breakfast for 6 months. In addition, there will be a total of 3 visits (Initial, 3-month and 6-month) to the MIND Institute where participants will be evaluated. At each visit (3 total) participants will undergo a battery of medical and neurologic exams which make take 2-3 days to complete each time. Participants and/or their caregivers will also be asked to fill out questionnaires/surveys. At the initial visit and at 6 months, we will collect blood for analysis. Two MRI scans will be done, also at the initial visit and at 6 months.

Detailed Description

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Conditions

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Fragile X Associated Tremor/Ataxia Syndrome (Fxtas) (Diagnosis)

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Sulforaphane 1 Tablet

Participants are taking 1 tablet per day. All participants will start with 1 tablet and continue with 1 tablet for 2 weeks before increasing dose.

Group Type EXPERIMENTAL

Sulforaphane

Intervention Type DIETARY_SUPPLEMENT

Sulforaphane will be taken one tablet in the morning with breakfast and then every 2 weeks, the dose will be increased by one tablet until a total of 6 tablets are taken in the morning. The supplement should be taken around the same time each day.

Sulforaphane 2 Tablets

Participants will increase dosage to 2 tablets per day after 2 weeks from the start of study participation. Participants will continue to take 2 tablets for 2 addiitonal weeks before increasing dose. If participants experience adverse side effects, participants will decrease dosage to 1 tablet.

Group Type EXPERIMENTAL

Sulforaphane

Intervention Type DIETARY_SUPPLEMENT

Sulforaphane will be taken one tablet in the morning with breakfast and then every 2 weeks, the dose will be increased by one tablet until a total of 6 tablets are taken in the morning. The supplement should be taken around the same time each day.

Sulforaphane 3 Tablets

Participants will increase dosage to 3 tablets per day at 4 weeks from the start of study participation. Participants will continue to take 3 tablets for 2 addiitonal weeks before increasing dose. If participants experience adverse side effects, participants will decrease dosage to 2 tablets.

Group Type EXPERIMENTAL

Sulforaphane

Intervention Type DIETARY_SUPPLEMENT

Sulforaphane will be taken one tablet in the morning with breakfast and then every 2 weeks, the dose will be increased by one tablet until a total of 6 tablets are taken in the morning. The supplement should be taken around the same time each day.

Sulforaphane 4 Tablets

Participants will increase dosage to 4 tablets per day at 6 weeks from the start of study participation. Participants will continue to take 4 tablets for 2 addiitonal weeks before increasing dose. If participants experience adverse side effects, participants will decrease dosage to 3 tablets.

Group Type EXPERIMENTAL

Sulforaphane

Intervention Type DIETARY_SUPPLEMENT

Sulforaphane will be taken one tablet in the morning with breakfast and then every 2 weeks, the dose will be increased by one tablet until a total of 6 tablets are taken in the morning. The supplement should be taken around the same time each day.

Sulforaphane 5 Tablets

Participants will increase dosage to 5 tablets per day at 8 weeks from the start of study participation. Participants will continue to take 5 tablets for 2 addiitonal weeks before increasing dose. If participants experience adverse side effects, participants will decrease dosage to 4 tablets.

Group Type EXPERIMENTAL

Sulforaphane

Intervention Type DIETARY_SUPPLEMENT

Sulforaphane will be taken one tablet in the morning with breakfast and then every 2 weeks, the dose will be increased by one tablet until a total of 6 tablets are taken in the morning. The supplement should be taken around the same time each day.

Sulforaphane

Participants will increase dosage to 6 tablets per day at 10 weeks from the start of study participation. Participants will continue to take 6 tablets for 2 addiitonal weeks before increasing dose. If participants experience adverse side effects, participants will decrease dosage to 5 tablets.

Group Type EXPERIMENTAL

Sulforaphane

Intervention Type DIETARY_SUPPLEMENT

Sulforaphane will be taken one tablet in the morning with breakfast and then every 2 weeks, the dose will be increased by one tablet until a total of 6 tablets are taken in the morning. The supplement should be taken around the same time each day.

Interventions

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Sulforaphane

Sulforaphane will be taken one tablet in the morning with breakfast and then every 2 weeks, the dose will be increased by one tablet until a total of 6 tablets are taken in the morning. The supplement should be taken around the same time each day.

Intervention Type DIETARY_SUPPLEMENT

Other Intervention Names

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Avmacol

Eligibility Criteria

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Inclusion Criteria

* Diagnosis of FXTAS
* Presence of a FMR1 premutation (55 to 200 CGG repeats)

Exclusion Criteria

* Individuals with severe renal failure (GFR is \<60 ml/min/1.73 m\^2)
* Significant and current reported substance abuse
* Individuals with substance use disorder (meets 6 or more symptoms of substance use disorder criteria)
* Any subject on hospice or on home oxygen
* Individuals who are pregnant
Minimum Eligible Age

50 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of California, Davis

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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UC Davis MIND Institute

Sacramento, California, United States

Site Status

Countries

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United States

References

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Napoli E, Flores A, Mansuri Y, Hagerman RJ, Giulivi C. Sulforaphane improves mitochondrial metabolism in fibroblasts from patients with fragile X-associated tremor and ataxia syndrome. Neurobiol Dis. 2021 Sep;157:105427. doi: 10.1016/j.nbd.2021.105427. Epub 2021 Jun 19.

Reference Type BACKGROUND
PMID: 34153466 (View on PubMed)

Uddin MS, Mamun AA, Jakaria M, Thangapandiyan S, Ahmad J, Rahman MA, Mathew B, Abdel-Daim MM, Aleya L. Emerging promise of sulforaphane-mediated Nrf2 signaling cascade against neurological disorders. Sci Total Environ. 2020 Mar 10;707:135624. doi: 10.1016/j.scitotenv.2019.135624. Epub 2019 Nov 21.

Reference Type BACKGROUND
PMID: 31784171 (View on PubMed)

Berry-Kravis EM, Harnett MD, Reines SA, Reese MA, Ethridge LE, Outterson AH, Michalak C, Furman J, Gurney ME. Inhibition of phosphodiesterase-4D in adults with fragile X syndrome: a randomized, placebo-controlled, phase 2 clinical trial. Nat Med. 2021 May;27(5):862-870. doi: 10.1038/s41591-021-01321-w. Epub 2021 Apr 29.

Reference Type BACKGROUND
PMID: 33927413 (View on PubMed)

Provided Documents

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Document Type: Informed Consent Form

View Document

Other Identifiers

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1743661

Identifier Type: -

Identifier Source: org_study_id

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