Pharmacodynamic Study of Emixustat Hydrochloride in Subjects With Macular Atrophy Secondary to Stargardt Disease
Primary Purpose
Stargardt Disease, Macular Atrophy
Status
Completed
Phase
Phase 2
Locations
United States
Study Type
Interventional
Intervention
Emixustat
Sponsored by
About this trial
This is an interventional treatment trial for Stargardt Disease
Eligibility Criteria
Inclusion Criteria, including, but not limited to:
- Clinical diagnosis of macular atrophy (MA) secondary to Stargardt disease (STGD) in one or both eyes
- At least 2 pathogenic mutations of the ABCA4 gene
- Early Treatment Diabetic Retinopathy Study BCVA of ≥ 20 letters (approximately ≥ 20/400 Snellen) in the study eye
- Adequate clarity of ocular media and adequate pupillary dilation to permit good quality imaging of MA in the study eye
- Able and willing to provide written informed consent before undergoing any study-related procedures
- Able to reliably administer oral medication by self or with available assistance
Exclusion Criteria, including, but not limited to:
- Macular atrophy associated with a condition other than STGD in either eye.
- Presence in either eye of an active ocular disease that in the opinion of the Investigator compromises or confounds visual function.
- History of any intraocular or ocular surface surgery in either eye within 3 months of screening.
- Current or previous participation in an interventional study to treat STGD using gene therapy or stem cell therapy at any time, or participation in an interventional study of a vitamin A derivative ≤3 months prior to screening.
- Pre-specified laboratory abnormalities at screening
- Presence of other medical or ophthalmic disease, physical examination finding, or clinical laboratory finding that in the opinion of the Investigator may contraindicate the use of an investigational drug and place the subject at risk
- Current or history of cancer (except for adequately treated basal cell or squamous cell carcinoma of the skin) within 1 year of screening
- History of myocardial infarction, stroke, unstable ischemic heart disease, uncontrolled cardiac arrhythmia, or hospitalization for congestive heart failure within 6 months of screening.
- Anticipated hospitalization for a medical/surgical procedure(s) that could result in interruption/premature cessation of study treatment or participation.
- Electrocardiogram with a clinically significant abnormal finding
- Female subjects who are pregnant or lactating
- Female subjects of childbearing potential or male subjects who are not surgically sterile who are not willing to practice a medically accepted method of birth control with their sexual partner from screening through 30 days after the final dose of study drug
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm Type
Experimental
Experimental
Experimental
Arm Label
Emixustat Dose 1
Emixustat Dose 2
Emixustat Dose 3
Arm Description
lowest dose of once-daily oral emixustat
middle dose of once-daily oral emixustat
highest dose of once-daily oral emixustat
Outcomes
Primary Outcome Measures
Change in Electrical Response of the Retina to a Flash of Light, as Measured by Electroretinogram
Percent suppression compared to baseline of rod b-wave amplitude recovery after a photobleaching light.
Secondary Outcome Measures
Percentage of Subjects With Adverse Events, by Severity and Seriousness
Assessment of safety profile
Full Information
1. Study Identification
Unique Protocol Identification Number
NCT03033108
Brief Title
Pharmacodynamic Study of Emixustat Hydrochloride in Subjects With Macular Atrophy Secondary to Stargardt Disease
Official Title
A Phase 2a Multicenter, Randomized, Masked Study Evaluating the Pharmacodynamics of Emixustat Hydrochloride in Subjects With Macular Atrophy Secondary to Stargardt Disease
Study Type
Interventional
2. Study Status
Record Verification Date
April 2021
Overall Recruitment Status
Completed
Study Start Date
January 2017 (Actual)
Primary Completion Date
November 2017 (Actual)
Study Completion Date
December 2017 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Kubota Vision Inc.
4. Oversight
Data Monitoring Committee
No
5. Study Description
Brief Summary
This is a pharmacodynamics study of emixustat hydrochloride in subjects with macular atrophy secondary to Stargardt disease.
Detailed Description
This is a multicenter, randomized, masked study to characterize the pharmacodynamics, safety and tolerability of emixustat in subjects with macular atrophy secondary to Stargardt disease.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Stargardt Disease, Macular Atrophy
7. Study Design
Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
23 (Actual)
8. Arms, Groups, and Interventions
Arm Title
Emixustat Dose 1
Arm Type
Experimental
Arm Description
lowest dose of once-daily oral emixustat
Arm Title
Emixustat Dose 2
Arm Type
Experimental
Arm Description
middle dose of once-daily oral emixustat
Arm Title
Emixustat Dose 3
Arm Type
Experimental
Arm Description
highest dose of once-daily oral emixustat
Intervention Type
Drug
Intervention Name(s)
Emixustat
Other Intervention Name(s)
emixustat hydrochloride
Intervention Description
Once daily, tablet for oral administration
Primary Outcome Measure Information:
Title
Change in Electrical Response of the Retina to a Flash of Light, as Measured by Electroretinogram
Description
Percent suppression compared to baseline of rod b-wave amplitude recovery after a photobleaching light.
Time Frame
Baseline and 1 month
Secondary Outcome Measure Information:
Title
Percentage of Subjects With Adverse Events, by Severity and Seriousness
Description
Assessment of safety profile
Time Frame
1 month
10. Eligibility
Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria, including, but not limited to:
Clinical diagnosis of macular atrophy (MA) secondary to Stargardt disease (STGD) in one or both eyes
At least 2 pathogenic mutations of the ABCA4 gene
Early Treatment Diabetic Retinopathy Study BCVA of ≥ 20 letters (approximately ≥ 20/400 Snellen) in the study eye
Adequate clarity of ocular media and adequate pupillary dilation to permit good quality imaging of MA in the study eye
Able and willing to provide written informed consent before undergoing any study-related procedures
Able to reliably administer oral medication by self or with available assistance
Exclusion Criteria, including, but not limited to:
Macular atrophy associated with a condition other than STGD in either eye.
Presence in either eye of an active ocular disease that in the opinion of the Investigator compromises or confounds visual function.
History of any intraocular or ocular surface surgery in either eye within 3 months of screening.
Current or previous participation in an interventional study to treat STGD using gene therapy or stem cell therapy at any time, or participation in an interventional study of a vitamin A derivative ≤3 months prior to screening.
Pre-specified laboratory abnormalities at screening
Presence of other medical or ophthalmic disease, physical examination finding, or clinical laboratory finding that in the opinion of the Investigator may contraindicate the use of an investigational drug and place the subject at risk
Current or history of cancer (except for adequately treated basal cell or squamous cell carcinoma of the skin) within 1 year of screening
History of myocardial infarction, stroke, unstable ischemic heart disease, uncontrolled cardiac arrhythmia, or hospitalization for congestive heart failure within 6 months of screening.
Anticipated hospitalization for a medical/surgical procedure(s) that could result in interruption/premature cessation of study treatment or participation.
Electrocardiogram with a clinically significant abnormal finding
Female subjects who are pregnant or lactating
Female subjects of childbearing potential or male subjects who are not surgically sterile who are not willing to practice a medically accepted method of birth control with their sexual partner from screening through 30 days after the final dose of study drug
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Acucela Medical Director, MD
Organizational Affiliation
Kubota Vision Inc.
Official's Role
Study Director
Facility Information:
City
Dallas
State/Province
Texas
ZIP/Postal Code
75231
Country
United States
12. IPD Sharing Statement
Plan to Share IPD
No
Citations:
PubMed Identifier
33214244
Citation
Kubota R, Birch DG, Gregory JK, Koester JM. Randomised study evaluating the pharmacodynamics of emixustat hydrochloride in subjects with macular atrophy secondary to Stargardt disease. Br J Ophthalmol. 2022 Mar;106(3):403-408. doi: 10.1136/bjophthalmol-2020-317712. Epub 2020 Nov 19.
Results Reference
derived
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Pharmacodynamic Study of Emixustat Hydrochloride in Subjects With Macular Atrophy Secondary to Stargardt Disease
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