Frequency of RPE65 Gene Mutation in Patients with Hereditary Retinal Dystrophy
Objectives:Hereditary retinal dystrophies are a rare group of diseases which are heterogeneous in genotype and phenotype and result in total blindness. One of the genetic defects that cause hereditary retinal dystrophy is mutation of the RPE65 gene. Genetic therapy studies in hereditary retinal dyst...
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| Format: | Article |
| Language: | English |
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Galenos Yayinevi
2022-08-01
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| Series: | Türk Oftalmoloji Dergisi |
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http://www.oftalmoloji.org/archives/archive-detail/article-preview/frequency-of-irpe65-i-gene-mutation-in-patients-wi/52728
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| author | Neslihan Sinim Kahraman Ayşe Öner Yusuf Özkul Munis Dündar |
| author_facet | Neslihan Sinim Kahraman Ayşe Öner Yusuf Özkul Munis Dündar |
| author_sort | Neslihan Sinim Kahraman |
| collection | DOAJ |
| description | Objectives:Hereditary retinal dystrophies are a rare group of diseases which are heterogeneous in genotype and phenotype and result in total blindness. One of the genetic defects that cause hereditary retinal dystrophy is mutation of the RPE65 gene. Genetic therapy studies in hereditary retinal dystrophies have increased in number recently, and important developments have been reported in these studies. Voretigene neparvovec-rzyl (Luxturna, Spark Therapeutics), a gene therapy drug for retinal dystrophy associated with RPE65 mutation, received Food and Drug Administration approval in 2017. This study aimed to investigate the frequency and clinical findings of patients with RPE65 gene defects, which may be amenable to genetic treatment.Materials and Methods:The data of patients diagnosed with hereditary retinal dystrophy who were followed up between 2017 and 2021 were retrospectively reviewed. Of these, 460 patients with genetic analysis results were included in the study. The clinical findings of patients with homozygous (biallelic) RPE65 mutation were screened.Results:RPE65 homozygous gene mutation was detected in only 11 of 460 cases (2.39%). Genetic results of the cases were presented in detail. The inheritance patterns of the cases were autosomal recessive. The demographic data and clinical findings were defined.Conclusion:RPE65 gene mutation is a very rare disorder. Genetic screening has gained importance with the emergence of gene therapy alternatives. New treatment methods are promising in cases for which there was no chance of a cure to date. |
| first_indexed | 2024-04-10T14:26:39Z |
| format | Article |
| id | doaj.art-dad5e2e310ab48c2846b2c62327a7717 |
| institution | Directory Open Access Journal |
| issn | 1300-0659 2147-2661 |
| language | English |
| last_indexed | 2024-04-10T14:26:39Z |
| publishDate | 2022-08-01 |
| publisher | Galenos Yayinevi |
| record_format | Article |
| series | Türk Oftalmoloji Dergisi |
| spelling | doaj.art-dad5e2e310ab48c2846b2c62327a77172023-02-15T16:09:02ZengGalenos YayineviTürk Oftalmoloji Dergisi1300-06592147-26612022-08-0152427027510.4274/tjo.galenos.2021.7494413049054Frequency of RPE65 Gene Mutation in Patients with Hereditary Retinal DystrophyNeslihan Sinim Kahraman0Ayşe Öner1Yusuf Özkul2Munis Dündar3 Acıbadem Kayseri Hastanesi, Göz Hastalıkları Kliniği, Kayseri, Türkiye Acıbadem Kayseri Hastanesi, Göz Hastalıkları Kliniği, Kayseri, Türkiye Erciyes Ünivsersitesi Tıp Fakültesi, Tıbbı Genetik Anabilim Dalı, Kayseri, Türkiye Erciyes Ünivsersitesi Tıp Fakültesi, Tıbbı Genetik Anabilim Dalı, Kayseri, Türkiye Objectives:Hereditary retinal dystrophies are a rare group of diseases which are heterogeneous in genotype and phenotype and result in total blindness. One of the genetic defects that cause hereditary retinal dystrophy is mutation of the RPE65 gene. Genetic therapy studies in hereditary retinal dystrophies have increased in number recently, and important developments have been reported in these studies. Voretigene neparvovec-rzyl (Luxturna, Spark Therapeutics), a gene therapy drug for retinal dystrophy associated with RPE65 mutation, received Food and Drug Administration approval in 2017. This study aimed to investigate the frequency and clinical findings of patients with RPE65 gene defects, which may be amenable to genetic treatment.Materials and Methods:The data of patients diagnosed with hereditary retinal dystrophy who were followed up between 2017 and 2021 were retrospectively reviewed. Of these, 460 patients with genetic analysis results were included in the study. The clinical findings of patients with homozygous (biallelic) RPE65 mutation were screened.Results:RPE65 homozygous gene mutation was detected in only 11 of 460 cases (2.39%). Genetic results of the cases were presented in detail. The inheritance patterns of the cases were autosomal recessive. The demographic data and clinical findings were defined.Conclusion:RPE65 gene mutation is a very rare disorder. Genetic screening has gained importance with the emergence of gene therapy alternatives. New treatment methods are promising in cases for which there was no chance of a cure to date. http://www.oftalmoloji.org/archives/archive-detail/article-preview/frequency-of-irpe65-i-gene-mutation-in-patients-wi/52728 rpe65 genehereditary retinal dystrophygene therapy |
| spellingShingle | Neslihan Sinim Kahraman Ayşe Öner Yusuf Özkul Munis Dündar Frequency of RPE65 Gene Mutation in Patients with Hereditary Retinal Dystrophy Türk Oftalmoloji Dergisi rpe65 gene hereditary retinal dystrophy gene therapy |
| title | Frequency of RPE65 Gene Mutation in Patients with Hereditary Retinal Dystrophy |
| title_full | Frequency of RPE65 Gene Mutation in Patients with Hereditary Retinal Dystrophy |
| title_fullStr | Frequency of RPE65 Gene Mutation in Patients with Hereditary Retinal Dystrophy |
| title_full_unstemmed | Frequency of RPE65 Gene Mutation in Patients with Hereditary Retinal Dystrophy |
| title_short | Frequency of RPE65 Gene Mutation in Patients with Hereditary Retinal Dystrophy |
| title_sort | frequency of rpe65 gene mutation in patients with hereditary retinal dystrophy |
| topic | rpe65 gene hereditary retinal dystrophy gene therapy |
| url |
http://www.oftalmoloji.org/archives/archive-detail/article-preview/frequency-of-irpe65-i-gene-mutation-in-patients-wi/52728
|
| work_keys_str_mv | AT neslihansinimkahraman frequencyofrpe65genemutationinpatientswithhereditaryretinaldystrophy AT ayseoner frequencyofrpe65genemutationinpatientswithhereditaryretinaldystrophy AT yusufozkul frequencyofrpe65genemutationinpatientswithhereditaryretinaldystrophy AT munisdundar frequencyofrpe65genemutationinpatientswithhereditaryretinaldystrophy |