Therapeutic Antioxidant Supplementation

NCT ID: NCT04890808

Last Updated: 2022-05-05

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

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-05-31

Study Completion Date

2027-09-30

Brief Summary

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A remotely administered study, non-randomized, non-blinded, controlled parallel assignment phase 2 trial to determine if oral inosine or inositol hexaphosphate will provide an effective long-term therapy to combat or slow neural damage progression either concurrently with existing iron chelation therapy or during the natural course of the disorder. Clinical changes in hearing, balance, and mobility, and cognition will be assessed for 36 months through patient-reported outcomes of study assigned assessments.

Detailed Description

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Capsules containing over-the-counter dietary supplement formulas of inosine 500 mg or 500 mg of inositol hexaphosphate(IP6) will be taken orally, two capsules two times per day for 36 months. Initial screening will determine patient arm assignment.

Before dosing begins, patients will submit copies of previous audiogram results (3yrs), radiology reports (3yrs), and MRI series (3yrs) if available and complete baseline assessment activities: Montreal Cognitive Assessment (MoCA) administered remotely, Timed Up, and Go (TUG), 2-Minute Walk Test (2-MWT), The Activities-specific Balance Confidence (ABC) Scale, iSS-QoL (custom) patient outcome reported

Assessment will take place four times: baseline, end-of-year 1 (12mo), end-of-year 2 (24mo), end-of-study (36mo).

Conditions

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Superficial Siderosis

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

NONE

Study Groups

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Over-the-Counter Dietary Supplement Inosine

capsules containing 500 mg of inosine Two capsules Twice Daily Other Name: hypoxanthine 9-β-D-ribofuranoside 9-\[(2R,3R,4S,5R)-3,4-dihydroxy-5-hydroxymethyl) oxolan-2-yl\]-1H-purin-6-one

Group Type EXPERIMENTAL

Inosine

Intervention Type DIETARY_SUPPLEMENT

Patients will be dosed with two 500 mg capsules of Inosine twice daily for 36 months

Over-the-Counter Dietary Supplement IP6

capsules containing 500mg of IP6 Two capsules Twice Daily Other Name: Inositol hexaphosphate

(1R,2S,3r,4R,5S,6s)-cyclohexane-1,2,3,4,5,6-hexayl hexakis\[dihydrogen (phosphate)\]

Group Type EXPERIMENTAL

IP6

Intervention Type DIETARY_SUPPLEMENT

Patients will be dosed with two 500 mg capsules of IP6 twice daily for 36 months

Interventions

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Inosine

Patients will be dosed with two 500 mg capsules of Inosine twice daily for 36 months

Intervention Type DIETARY_SUPPLEMENT

IP6

Patients will be dosed with two 500 mg capsules of IP6 twice daily for 36 months

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

Confirmed diagnosis of iSS (superficial siderosis of the CNS)

No illegal drug use

No history of myocardial infarction or stroke

No history of severe chronic obstructive pulmonary disease

Can safely swallow large capsules

Exhibits at least one confirmed iSS related symptom: Hearing Loss, Balance, Memory/Cognitive problems

Does not have a known hypersensitivity or intolerance to any study antioxidant

Has not taken part in another treatment study for any condition within the last 30 days (about four and a half weeks)

Not currently pregnant or breastfeeding

Exclusion Criteria

Inosine Arm Exclusion :

Diagnosed with urate urolithiasis, or recurrent urolithiasis, all unknown type

History of Gout

History of Kidney Stones

P6 Arm Exclusion

Long-term anticoagulant

Known or suspected active bleed into the CNS

Currently undergoing deferiprone chelation therapy

Plan to begin deferiprone chelation therapy within three years

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Minimum Eligible Age

16 Years

Maximum Eligible Age

77 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Superficial Siderosis Research Alliance Inc.

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Rori-Suzanne Daniel

Role: STUDY_DIRECTOR

Superfical Siderosis Research Alliance

Central Contacts

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Rori-Suzanne Daniel

Role: CONTACT

9035594123

Related Links

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https://superficialsiderosis.org

Superficial Siderosis Patient Registry

https://ssra.livingwithss.com

Superficial Siderosis research Alliance

Other Identifiers

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SSRA0921

Identifier Type: -

Identifier Source: org_study_id

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