Visual function and retinal changes after voretigene neparvovec treatment in children with biallelic RPE65-related inherited retinal dystrophy

Abstract To report quantitative retinal changes assessed by spectral-domain optical coherence tomography (SD-OCT) in children treated with voretigene neparvovec (VN) at a single center in Italy. Retrospective review of six consecutive pediatric patients with biallelic RPE65-related dystrophy treated...

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Main Authors: Francesco Testa, Paolo Melillo, Valentina Di Iorio, Claudio Iovino, Francesco Farinaro, Marianthi Karali, Sandro Banfi, Settimio Rossi, Michele Della Corte, Francesca Simonelli
Format: Article
Language:English
Published: Nature Portfolio 2022-10-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-022-22180-6
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author Francesco Testa
Paolo Melillo
Valentina Di Iorio
Claudio Iovino
Francesco Farinaro
Marianthi Karali
Sandro Banfi
Settimio Rossi
Michele Della Corte
Francesca Simonelli
author_facet Francesco Testa
Paolo Melillo
Valentina Di Iorio
Claudio Iovino
Francesco Farinaro
Marianthi Karali
Sandro Banfi
Settimio Rossi
Michele Della Corte
Francesca Simonelli
author_sort Francesco Testa
collection DOAJ
description Abstract To report quantitative retinal changes assessed by spectral-domain optical coherence tomography (SD-OCT) in children treated with voretigene neparvovec (VN) at a single center in Italy. Retrospective review of six consecutive pediatric patients with biallelic RPE65-related dystrophy treated bilaterally with VN. SD-OCT scans were analyzed to extract Early Treatment Diabetic Retinopathy Study (ETDRS) thickness maps of the whole retina and the outer nuclear layer (ONL). Changes in visual function were assessed by best-corrected visual acuity (BCVA) and retinal morphology at Days 30/45 and 180. BCVA significantly improved at Day 30/45 and 6 months (both P < 0.001). Central foveal retinal thickness and central foveal ONL thickness tended to increase (6.4 ± 19.2 µm; P = 0.080 and 3.42 ± 7.68 µm; P = 0.091, respectively). ONL thickness of the internal ETDRS-ring significantly increased at day 30/45 (4.7 ± 8.4 µm; P < 0.001) and day 180 (5.0 ± 5.7 µm; P = 0.009). Intra-operative foveal detachment was not associated with a higher function gain in terms of BCVA, but with a mild thinning of foveal ONL after treatment. The improvement of BCVA and thickening of the ONL layer suggest that improvement of visual acuity could be related to partial recovery of retinal morphology in the perifoveal ring.
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spelling doaj.art-d75fea87d0de4eedb5f9c2696f901e752022-12-22T04:37:02ZengNature PortfolioScientific Reports2045-23222022-10-011211910.1038/s41598-022-22180-6Visual function and retinal changes after voretigene neparvovec treatment in children with biallelic RPE65-related inherited retinal dystrophyFrancesco Testa0Paolo Melillo1Valentina Di Iorio2Claudio Iovino3Francesco Farinaro4Marianthi Karali5Sandro Banfi6Settimio Rossi7Michele Della Corte8Francesca Simonelli9Eye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi VanvitelliEye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi VanvitelliEye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi VanvitelliEye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi VanvitelliEye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi VanvitelliEye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi VanvitelliMedical Genetics, Department of Precision Medicine, University of Campania Luigi VanvitelliEye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi VanvitelliEye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi VanvitelliEye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi VanvitelliAbstract To report quantitative retinal changes assessed by spectral-domain optical coherence tomography (SD-OCT) in children treated with voretigene neparvovec (VN) at a single center in Italy. Retrospective review of six consecutive pediatric patients with biallelic RPE65-related dystrophy treated bilaterally with VN. SD-OCT scans were analyzed to extract Early Treatment Diabetic Retinopathy Study (ETDRS) thickness maps of the whole retina and the outer nuclear layer (ONL). Changes in visual function were assessed by best-corrected visual acuity (BCVA) and retinal morphology at Days 30/45 and 180. BCVA significantly improved at Day 30/45 and 6 months (both P < 0.001). Central foveal retinal thickness and central foveal ONL thickness tended to increase (6.4 ± 19.2 µm; P = 0.080 and 3.42 ± 7.68 µm; P = 0.091, respectively). ONL thickness of the internal ETDRS-ring significantly increased at day 30/45 (4.7 ± 8.4 µm; P < 0.001) and day 180 (5.0 ± 5.7 µm; P = 0.009). Intra-operative foveal detachment was not associated with a higher function gain in terms of BCVA, but with a mild thinning of foveal ONL after treatment. The improvement of BCVA and thickening of the ONL layer suggest that improvement of visual acuity could be related to partial recovery of retinal morphology in the perifoveal ring.https://doi.org/10.1038/s41598-022-22180-6
spellingShingle Francesco Testa
Paolo Melillo
Valentina Di Iorio
Claudio Iovino
Francesco Farinaro
Marianthi Karali
Sandro Banfi
Settimio Rossi
Michele Della Corte
Francesca Simonelli
Visual function and retinal changes after voretigene neparvovec treatment in children with biallelic RPE65-related inherited retinal dystrophy
Scientific Reports
title Visual function and retinal changes after voretigene neparvovec treatment in children with biallelic RPE65-related inherited retinal dystrophy
title_full Visual function and retinal changes after voretigene neparvovec treatment in children with biallelic RPE65-related inherited retinal dystrophy
title_fullStr Visual function and retinal changes after voretigene neparvovec treatment in children with biallelic RPE65-related inherited retinal dystrophy
title_full_unstemmed Visual function and retinal changes after voretigene neparvovec treatment in children with biallelic RPE65-related inherited retinal dystrophy
title_short Visual function and retinal changes after voretigene neparvovec treatment in children with biallelic RPE65-related inherited retinal dystrophy
title_sort visual function and retinal changes after voretigene neparvovec treatment in children with biallelic rpe65 related inherited retinal dystrophy
url https://doi.org/10.1038/s41598-022-22180-6
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