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  • Title: A New Ocular Phenotype Combining Juvenile Glaucoma and Doyne Honeycomb Retinal Dystrophy (Malattia Leventinese) due to a Novel EFEMP1 Pathogenic Variant.
    Author: Chacon-Camacho OF, Ordaz-Robles T, Cid-García MA, Yepes-Rodríguez O, Arce-González R, Martínez-Aguilar A, Zenteno JC.
    Journal: Am J Med Genet A; 2025 Jan; 197(1):e63869. PubMed ID: 39264138.
    Abstract:
    Doyne honeycomb retinal dystrophy (DHRD), also termed malattia leventinese (MLVT), is a dominantly inherited ocular disease characterized by the progressive accumulation of macular and peripapillary drusenoid material beneath the retinal pigment epithelium in the Bruch membrane. In all affected individuals genetically characterized to date, DHRD/MLVT is caused by a single heterozygous p.Arg345Trp missense variant in the EGF-containing fibulin-like extracellular matrix protein 1, EFEMP1. Recently, pathogenic variants in the EFEMP1 gene have also been demonstrated in several families with juvenile or adult-onset hereditary isolated glaucoma. Here, we describe a family featuring a unique phenotype of juvenile glaucoma and DHRD/MLVT caused by a novel EFEMP1 variant. Our results expand both the ocular phenotype associated with EFEMP1 variants and the molecular spectrum causing DHRD by describing the first non-p.Arg345Trp EFEMP1 pathogenic allele.
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