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Acucela Provides Update on Emixustat Phase 3 Clinical Trial in Patients with Stargardt Disease

2020年02月13日 PM10:00
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SEATTLE

Acucela Inc. (“Acucela”), a clinical-stage ophthalmology company and wholly-owned subsidiary of Kubota Pharmaceutical Holdings Co., Ltd. (Tokyo 4596), announced today that the company has achieved over 65% subject enrollment in its ongoing phase 3 clinical trial investigating emixustat hydrochloride (“emixustat”) in patients with macular atrophy secondary to Stargardt disease.

The study is a multi-center, randomized, double-masked, and placebo-controlled phase 3 clinical study in which subjects are randomly assigned to emixustat 10 mg or placebo (2:1 ratio) once daily for 24 months. For a rare disease like Stargardt, enrolling subjects into a clinical study can be challenging. A total of 108 patients have been enrolled in this study as of January 31, 2020, and the target total of 162 subjects are expected to be fully enrolled across 30 sites in 11 countries worldwide during 2020.

The FDA (U.S. Food and Drug Administration) and European Medicines Agency (EMA) granted orphan drug designation to emixustat for the treatment of Stargardt disease.

This projection has been included in the financial results of FY2019 announced on February 13, 2020 in Japan.

About Stargardt Disease

Stargardt disease is a rare, genetically inherited disease that directly affects the retina of the eye, often resulting in the slow progression of vision loss in children. It may also be referred to as Stargardt macular dystrophy or juvenile macular degeneration and affects approximately 1 in 8,000 – 10,000 individuals worldwide*1. The most common form of the disease is caused by a genetic mutation of the ABCA4 gene leading to the accumulation of toxic vitamin A byproducts (primarily A2E) in the retina, which results in the gradual deterioration of photoreceptors and vision. Symptoms of Stargardt disease typically appear during childhood or adolescence, but in some cases difficulty with eyesight and vision loss may not be identified until later in life.

Stargardt disease affects less than 150,000 patients in total in the U.S., Europe and Japan where it is recognized as an orphan disease. Currently, there are no known therapies that slow the advance of the disease, and it is recognized as a serious unmet medical need.

*1 Facts About Stargardt Disease, National Eye Institute. https://nei.nih.gov/health/stargardt/star_facts, accessed on 14 September 2018.

About Emixustat Hydrochloride

Emixustat modulates the visual cycle by inhibiting a critical enzyme of this pathway, retinal pigment epithelium protein 65 (RPE65). The visual cycle is the process by which vitamin A is recycled in the eye; vitamin A is crucial to the visual process. Slowing the visual cycle reduces the availability of vitamin A derivatives (11-cis- and all-trans-retinal) to form precursors of toxic A2E and related compounds. In addition, reducing the availability of 11-cis-retinal decreases retinal metabolic demands under dark conditions. Emixustat when delivered orally was found to be generally well tolerated in human clinical studies with delayed dark adaptation being the most common adverse event. Acucela is exploring emixustat’s potential to stop or slow the progression of vision loss in patients diagnosed with Stargardt disease in an ongoing clinical study.

About Acucela Inc.

Acucela Inc. is a wholly-owned subsidiary of Kubota Pharmaceutical Holdings Co., Ltd. (Tokyo 4596) committed to translating innovation into a diverse portfolio of drugs and devices to preserve and restore vision for millions of people worldwide. Acucela’s development pipeline include drug candidates for the treatment of diabetic retinopathy, Stargardt disease, and optogenetics-based gene therapy for the treatment of retinitis pigmentosa. The company is also developing a handheld OCT device for the monitoring of neovascular retinal diseases, to be used directly by patients. https://www.acucela.com; https://www.kubotaholdings.co.jp/en/

Cautionary Statements: https://www.kubotaholdings.co.jp/en/1/index.html

“Acucela”, the Acucela logo and “Kubota” are registered trademarks or trademarks of Acucela Inc. or Kubota Pharmaceutical Holdings in various jurisdictions.

View source version on businesswire.com: https://www.businesswire.com/news/home/20200213005034/en/

CONTACT

Media and Investor Relations Contact:

Hiroki Maekawa

Chief Financial Officer

Phone: +81-3-6550-8928

Email: hmaekawa@acucela.com

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