Evidence map›Paper›PMID 42192584›Full record

ArticleKorean journal of ophthalmology : KJO2026

Four-Year Structural and Functional Outcomes of the First Subretinal Voretigene Neparvovec-rzyl Treatment for RPE65-Associated Inherited Retinal Dystrophy in South Korea.

Sungsoon Hwang, Ki Young Son, Sang Jin Kim

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In one paragraph

Article in Korean journal of ophthalmology : KJO, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

3 authors.

Sungsoon HwangDepartment of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Ki Young SonDepartment of Ophthalmology, Chungnam National University Sejong Hospital, Chungnam National University College of Medicine, Sejong, Korea.
Sang Jin KimDepartment of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. sangjin23.kim@samsung.com.

Funding

Korea Health Industry Development Institute RS-2022-KH129440Ministry of Health and Welfare RS-2023-00258840Ministry of Science and ICTMinistry of Trade, Industry and Energy 1711199341
6 · The paper itself

Abstract

purposeTo describe 4-year functional and structural outcomes of the first bilateral subretinal voretigene neparvovec-rzyl (VN) in a South Korean patient with molecularly confirmed RPE65-associated inherited retinal dystrophy, with a focus on the relationship between chorioretinal atrophy and visual function.

methodsThis was an observational case-based study of a 29-year-old female patient with biallelic RPE65 pathogenic variants. Both eyes underwent 25-gauge pars plana vitrectomy and subretinal VN injection 7 days apart. Standardized assessments were performed at baseline and 1 month, 3 months, 6 months, 1 year, 2 years, 3 years, and 4 years. Functional outcomes included best-corrected visual acuity (BCVA; Early Treatment Diabetic Retinopathy Study [ETDRS] letters), kinetic visual fields, full-field stimulus threshold (FST) testing with white-light, and multi-luminance mobility test (MLMT). Structural changes were evaluated with spectral-domain optical coherence tomography, ultra-widefield color and autofluorescence imaging, and infrared reflectance.

resultsAt baseline, BCVA was 9 and 8 ETDRS letters (right/left), with widespread ellipsoid zone loss but relatively preserved retinal pigment epithelium. BCVA improved to 34 / 33 letters at 6 months and remained higher than baseline in both eyes at 4 years. Goldmann III4e average visual field radius increased from 2.1° / 0.3° at baseline to 8.8° / 15.0° at 3 months, followed by partial contraction with paracentral scotomas after 1 year, yet fields remained wider than baseline at 4 years. FST improved from 0.10 log10(cd·s/m²) to -1.46 log10(cd·s/m²) at 1 month and remained stable at 3 months. MLMT performance improved from 150 lux at baseline to 10 lux binocularly and was maintained at 4 years. Perifoveal, fovea-involving chorioretinal atrophy developed between 3 and 6 months and enlarged mainly during the first year, then progressed slowly thereafter.

conclusionsIn this South Korean patient, VN provided large and durable functional gains over 4 years despite early, severe chorioretinal atrophy, illustrating structural-functional dissociation and underscoring the need for long-term multimodal monitoring in RPE65-associated disease.

Indexed as

Retinal DystrophiesRetinoid IsomerohydrolaseVisual AcuityAdultFemaleFluorescein AngiographyFollow-Up StudiesHumansRepublic of KoreaTomography, Optical CoherenceVisual FieldsRetinoid IsomerohydrolaseGenetic therapyLeber congenital amaurosisRetinal dystrophies

Identifiers

PMID42192584
PMCPMC13677208

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.