ArticleOrphanet journal of rare diseases2024
Cone dysfunction in ARR3-mutation-associated early-onset high myopia: an electrophysiological study.
Article in Orphanet journal of rare diseases, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Identification of a novel nonsense variant in ARR3 in a family with early-onset high myopia.Genes & genomics · 2026Article
- Multilevel Genetic and Functional Assessment of an ARR3 Frameshift Variant in Early-Onset High Myopia.International journal of genomics · 2026Article
- IMI-Myopia Genetics Report.Investigative ophthalmology & visual science · 2025Review
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Authors and funding
7 authors.
Funding
Abstract
backgroundMyopia-26, a Mendelian form of early-onset high-myopia (eoHM) caused by mutations in the X-chromosomal ARR3 gene and predominantly affecting females, curiously, may provide an alternative route of investigation to unveil retinal mechanisms underlying pathological eye growth. We conducted a case-control cross-sectional prospective electrophysiological study in genetically characterized Myopia-26 patients (ARR3 heterozygous symptomatic females) compared with high myopes harboring intact ARR3 alleles and one carrier hemizygous male.
resultsParticipants were 26 volunteers: 10 healthy control females (E-CTRL, mean age = 31.5 ± 8.8 years), one healthy control male, one carrier male of the mutant ARR3 allele and 14 female eoHM patients (mean age = 27.0 ± 13.1 years) divided in two groups: seven without (M-CTRL) and seven with (MYP-26) genetic alteration in the ARR3 gene. The clinical evaluation included complete eye screening and full-field electroretinograms (ERGs) recorded from both eyes under mydriasis. Spherical equivalent was comparable (mean=-9.55 ± 2.46 and - 10.25 ± 3.22 for M-CTRL and MYP-26, respectively) and best corrected visual acuity (BCVA) was significantly different between M-CTRL and MYP-26 (1.0 vs. 0.406 ± 0.253, respectively). E-CTRL and M-CTRL showed similar light-adapted flash and flicker ERG amplitudes; however, the prior values were reduced by ~ 35% (a- and b-waves alike), the latter by ~ 55% in the MYP-26 group (F
conclusionsThe cone dysfunction observed in Myopia-26 patients is specifically linked to the mutation of ARR3, and is not the consequence of eoHM, i.e. elongation of the eye. It may play a role in myopic refractive error development through a yet unconfirmed pathomechanism.
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