Open-Label Extension: Tolerability and Effects of ALK-001 on Stargardt Disease (TEASE)

NCT ID: NCT04239625

Last Updated: 2025-04-27

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

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE2

Total Enrollment

200 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-12-20

Study Completion Date

2026-12-31

Brief Summary

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The purpose of this open-label, multicenter study is to determine the long-term safety, pharmacokinetics and effects of ALK-001 (C20-D3-retinyl acetate) on the progression of Stargardt disease. This study is an extension of NCT02402660 and enrolls participants who are at least 8 years old. Enrollment is by invitation only.

Funding Source - FDA OOPD

Detailed Description

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Conditions

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Stargardt Disease Stargardt Macular Degeneration Stargardt Macular Dystrophy Autosomal Recessive Stargardt Disease 1 (ABCA4-related)

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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ALK-001

Group Type EXPERIMENTAL

ALK-001

Intervention Type DRUG

Oral administration of a pill for up to 24 months

Interventions

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ALK-001

Oral administration of a pill for up to 24 months

Intervention Type DRUG

Other Intervention Names

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C20-D3-Retinyl Acetate C20 Deuterated vitamin A

Eligibility Criteria

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Inclusion Criteria

* Clinical diagnosis of Stargardt disease (STGD1)
* Has at least two ABCA4 disease-causing mutations, unless authorized by sponsor
* Has a best-corrected visual acuity (BCVA) greater than approximately 20/160 in at least one eye
* Healthy as judged by investigator
* Able and willing to comply with study requirements, restrictions and instructions and is likely to complete the 24-month study
* Has been invited to participate in this extension, and has signed and dated the informed consent forms (or assent where appropriate) to participate
* Female of childbearing potential has signed the attestation on contraception requirements

Exclusion Criteria

* Is lactating or pregnant
* Has a medical condition likely to prevent compliance with the protocol and/or interfere with absorption of ALK-001 or performance of study procedures
* Has abnormal laboratory result(s) at screening
* Has an ocular disorder that may confound ocular assessments
* Has a history of ocular intervention within 90 days of screening
Minimum Eligible Age

8 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Alkeus Pharmaceuticals, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Alkeus Site

Phoenix, Arizona, United States

Site Status

Alkeus Site

Los Angeles, California, United States

Site Status

Alkeus Site

Aurora, Colorado, United States

Site Status

Alkeus Site

Gainesville, Florida, United States

Site Status

Alkeus Site

Indianapolis, Indiana, United States

Site Status

Alkeus Site

Grand Rapids, Michigan, United States

Site Status

Alkeus Site

Westbury, New York, United States

Site Status

Alkeus Site

Silverdale, Washington, United States

Site Status

Countries

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United States

References

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Ma L, Kaufman Y, Zhang J, Washington I. C20-D3-vitamin A slows lipofuscin accumulation and electrophysiological retinal degeneration in a mouse model of Stargardt disease. J Biol Chem. 2011 Mar 11;286(10):7966-7974. doi: 10.1074/jbc.M110.178657. Epub 2010 Dec 14.

Reference Type BACKGROUND
PMID: 21156790 (View on PubMed)

Kaufman Y, Ma L, Washington I. Deuterium enrichment of vitamin A at the C20 position slows the formation of detrimental vitamin A dimers in wild-type rodents. J Biol Chem. 2011 Mar 11;286(10):7958-7965. doi: 10.1074/jbc.M110.178640. Epub 2010 Nov 12.

Reference Type BACKGROUND
PMID: 21075840 (View on PubMed)

Mihai DM, Jiang H, Blaner WS, Romanov A, Washington I. The retina rapidly incorporates ingested C20-D(3)-vitamin A in a swine model. Mol Vis. 2013 Jul 25;19:1677-83. Print 2013.

Reference Type BACKGROUND
PMID: 23914132 (View on PubMed)

Charbel Issa P, Barnard AR, Herrmann P, Washington I, MacLaren RE. Rescue of the Stargardt phenotype in Abca4 knockout mice through inhibition of vitamin A dimerization. Proc Natl Acad Sci U S A. 2015 Jul 7;112(27):8415-20. doi: 10.1073/pnas.1506960112. Epub 2015 Jun 23.

Reference Type BACKGROUND
PMID: 26106163 (View on PubMed)

Saad L, Washington I. Can Vitamin A be Improved to Prevent Blindness due to Age-Related Macular Degeneration, Stargardt Disease and Other Retinal Dystrophies? Adv Exp Med Biol. 2016;854:355-61. doi: 10.1007/978-3-319-17121-0_47.

Reference Type BACKGROUND
PMID: 26427432 (View on PubMed)

Related Links

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http://alkeuspharma.com/contact-us/

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Other Identifiers

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R01FD004098

Identifier Type: FDA

Identifier Source: secondary_id

View Link

R01FD006016

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

R01FD006316

Identifier Type: FDA

Identifier Source: secondary_id

View Link

ALK001-P1002-EXT

Identifier Type: -

Identifier Source: org_study_id

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