Ueno, Shinji and Koyanagi, Yoshito and Kominami, Taro and Ito, Yasuki and Kawano, Kenichi and Nishiguchi, Koji M. and Rivolta, Carlo and Nakazawa, Toru and Sonoda, Koh-Hei and Terasaki, Hiroko. (2020) Clinical characteristics and high resolution retinal imaging of retinitis pigmentosa caused by RP1 gene variants. Japanese Journal of Ophthalmology, 64 (5). pp. 485-496.
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Official URL: https://edoc.unibas.ch/79688/
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Abstract
To report the clinical course and high resolution images of autosomal recessive retinitis pigmentosa (RP) associated with a variant of the RP1 gene (c.4052_4053ins328/p.Tyr1352Alafs*9; m1), a high frequency founder variant in Japanese RP patients.; Retrospective case series.; Nine patients from 5 unrelated Japanese families were studied. Five patients had the m1 variant homozygously, and 4 patients had the m1 variant compound heterozygously with another frameshift variant (c.4196delG/p.Cys1399Leufs*5). Ophthalmic examinations including adaptive optics (AO) fundus imaging were performed periodically.; The fundus photographs, fundus autofluorescence (FAF) images, and optical coherence tomographic (OCT) images indicated severe retinal degeneration in all the patients involving the macula even at a young age (20 s). The areas of surviving photoreceptors in the central macula were seen as hyper-autofluorescent regions in the FAF images and preserved outer retinal structure in the OCT images; they were identifiable in the AO fundus images in 8 eyes. The borders of the surviving photoreceptor areas were surrounded by hyporeflective clumps, presumably containing melanin, and the size of these areas decreased progressively during the 4-year follow-up period. The disappearance of the surviving photoreceptor areas was associated with complete blindness.; Patients with RP associated with the m1 variant have a progressive and severe retinal degeneration that begins at an early age. Monitoring the surviving photoreceptor areas by AO fundus imaging can provide a more precise pathological record of retinal degeneration.
Faculties and Departments: | 03 Faculty of Medicine 09 Associated Institutions > Institute of Molecular and Clinical Ophthalmology Basel (IOB) |
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UniBasel Contributors: | Rivolta, Carlo |
Item Type: | Article, refereed |
Article Subtype: | Research Article |
Publisher: | Springer Nature |
ISSN: | 0021-5155 |
e-ISSN: | 1613-2246 |
Note: | Publication type according to Uni Basel Research Database: Journal article |
Language: | English |
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Identification Number: |
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edoc DOI: | |
Last Modified: | 06 Jul 2021 01:30 |
Deposited On: | 23 Dec 2020 10:06 |
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