Multimodal Imaging of a novel MFSD8/CLN7 mutation associated with non-syndromic symmetric adult-onset macular dystrophy.
Retinal cases & brief reports(2024)
Abstract
PURPOSE:To report multimodal imaging features of a novel MFSD8/CLN7 pathogenic variant associated with bilateral and symmetric non-syndromic macular dystrophy.
METHODS:A 63-year-old female patient presented complaining of a gradual subjective decline in visual acuity in both eyes over the previous months. This patient underwent a comprehensive ophthalmological assessment, including multimodal retinal imaging and electrophysiological testing. Given suspicion for a hereditary retinal disorder, genetic testing was pursued.
RESULTS:The eye examination revealed blunted foveal reflexes and no lesions or abnormalities in the equatorial or anterior retinal periphery. Multimodal imaging showed a bilateral and almost symmetrical subfoveal interruption of the outer retinal layers including an optical gap. Genetic testing revealed that the MFSD8/CLN7 gene exhibited a homozygous variant, specifically p.Ala484Val (c.1451C>T). This variant was identified as the likely causative factor for the condition.
CONCLUSION:We herein describe the clinical findings of a previously unreported homozygous variant in the MFSD8/CLN7 gene, resulting in a non-syndromic form of bilateral central macular dystrophy.
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