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Safety and Efficacy Assessment Treatment Trials of Emixustat Hydrochloride (SEATTLE)

This study has been completed.
Otsuka Pharmaceutical Co., Ltd.
Information provided by (Responsible Party):
Acucela Inc. Identifier:
First received: February 28, 2013
Last updated: May 31, 2016
Last verified: May 2016
The purpose of this study is to determine if emixustat hydrochloride (ACU-4429) reduces the rate of progression of geographic atrophy compared to placebo in subjects with dry age-related macular degeneration.

Condition Intervention Phase
Geographic Atrophy
Drug: ACU-4429
Drug: Placebo
Phase 2
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Phase 2b/3 Multicenter, Randomized, Double-Masked, Dose-Ranging Study Comparing the Efficacy and Safety of Emixustat Hydrochloride (ACU-4429) With Placebo for the Treatment of Geographic Atrophy Associated With Dry Age-Related Macular Degeneration

Resource links provided by NLM:

Further study details as provided by Acucela Inc.:

Primary Outcome Measures:
  • Change from baseline in the total area of the GA lesion(s) [ Time Frame: 24 months ]

Secondary Outcome Measures:
  • Change from baseline in BCVA score [ Time Frame: 24 months ]
  • Frequency of AEs, discontinuations due to AEs, or dose modifications; severity and seriousness of AEs [ Time Frame: 24 months ]

Enrollment: 508
Study Start Date: February 2013
Study Completion Date: May 2016
Primary Completion Date: April 2016 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: ACU-4429 2.5 mg
2.5 mg tablet
Drug: ACU-4429
Take orally once daily for 24 months
Other Name: emixustat hydrochloride
Experimental: ACU-4429 5 mg
5 mg tablet
Drug: ACU-4429
Take orally once daily for 24 months
Other Name: emixustat hydrochloride
Experimental: ACU-4429 10 mg
10 mg tablet
Drug: ACU-4429
Take orally once daily for 24 months
Other Name: emixustat hydrochloride
Placebo Comparator: Placebo
Includes identical tablets with only inactive ingredients (0 mg).
Drug: Placebo
Take orally once daily for 24 months


Ages Eligible for Study:   55 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Males or females, age ≥55 years.
  2. Clinical diagnosis of GA associated with AMD
  3. Able and willing to provide written informed consent.
  4. Able to reliably administer oral medication by self or with available assistance.

Exclusion Criteria:

  1. Active CNV or presence of an active ocular disease.
  2. Known serious allergy to the fluorescein sodium for injection in angiography.
  3. Pre-specified laboratory abnormalities at screening.
  4. Treatment with any investigational study drug within 30 days of screening or device (within 60 days of screening)
  5. History of other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding
  6. Female subjects who are pregnant or lactating.
  7. Female subjects of childbearing potential and male subjects who are not surgically sterile who are not willing to practice a medically accepted method of birth control from screening through 30 days after completion of the study.
  8. Unstable or poorly controlled medical or ophthalmic conditions
  Contacts and Locations
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Please refer to this study by its identifier: NCT01802866

United States, Arizona
Phoenix, Arizona, United States
Sponsors and Collaborators
Acucela Inc.
Otsuka Pharmaceutical Co., Ltd.
Study Director: Acucela Medical Monitor Acucela Inc.
  More Information

Responsible Party: Acucela Inc. Identifier: NCT01802866     History of Changes
Other Study ID Numbers: 4429-202
Study First Received: February 28, 2013
Last Updated: May 31, 2016
Individual Participant Data  
Plan to Share IPD: Undecided

Keywords provided by Acucela Inc.:
Geographic atrophy

Additional relevant MeSH terms:
Geographic Atrophy
Pathological Conditions, Anatomical
Macular Degeneration
Retinal Degeneration
Retinal Diseases
Eye Diseases processed this record on May 25, 2017