Acta ophthalmologica · 2026
Clinical and genetic characterization of BEST1-associated retinal dystrophies in the Norwegian population.
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Sæther Erlend, Bertelsen Geir, Bragadottir Ragnheidur, Holtan Josephine Prener
Аннотация
PURPOSE: BEST1 variants are the third leading cause of inherited retinal dystrophies in Norway. The purpose of this study was to describe the BEST1-associated retinal dystrophy (BEST1-RD) population genetically and clinically, and to determine the prevalence of BEST1-RD in Southern and Eastern Norway.
METHODS: This registry-based study used the Oslo University Hospital Inherited Retinal Disease registry for genetic data and extracted clinical data from medical records.
RESULTS: Sixty patients were included. The prevalence of BEST1-RD in Southern and Eastern Norway was between 1:64 600 and 1:43 700. Forty-one patients were diagnosed with Best's vitelliform macular dystrophy (BVMD), 15 with autosomal recessive bestrophinopathy (ARB) and 4 with autosomal dominant vitreoretinochoroidopathy (ADVIRC). The two most common genotypes were c.403G>A and c.89A>G. These variants were associated with BVMD and a later age of onset compared with other BVMD-associated genotypes.
CONCLUSION: The prevalence of BEST1-RD in Southern and Eastern Norway was between 1:64 600 and 1:43 700. BVMD patients carrying c.403G>A or c.89A>G had a later age of onset than BVMD patients carrying other variants.
METHODS: This registry-based study used the Oslo University Hospital Inherited Retinal Disease registry for genetic data and extracted clinical data from medical records.
RESULTS: Sixty patients were included. The prevalence of BEST1-RD in Southern and Eastern Norway was between 1:64 600 and 1:43 700. Forty-one patients were diagnosed with Best's vitelliform macular dystrophy (BVMD), 15 with autosomal recessive bestrophinopathy (ARB) and 4 with autosomal dominant vitreoretinochoroidopathy (ADVIRC). The two most common genotypes were c.403G>A and c.89A>G. These variants were associated with BVMD and a later age of onset compared with other BVMD-associated genotypes.
CONCLUSION: The prevalence of BEST1-RD in Southern and Eastern Norway was between 1:64 600 and 1:43 700. BVMD patients carrying c.403G>A or c.89A>G had a later age of onset than BVMD patients carrying other variants.