ArticleGenetics in medicine : official journal of the American College of Medical Genetics2025
Biallelic null variants in C19orf44 cause a unique late-onset retinal dystrophy phenotype characterized by patchy perifoveal chorioretinal atrophy.
Article in Genetics in medicine : official journal of the American College of Medical Genetics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Loss-of-function variants in SAXO6, encoding a microtubule inner protein of photoreceptor cilia, cause a late-onset retinal dystrophy.American journal of human genetics · 2026Article
- An enzymatic cascade enables sensitive and specific proximity labeling proteomics in challenging biological systems.Nature communications · 2025Article
- Biallelic loss-of-function variants inJournal of medical genetics · 2025Article
- Phenotypic Divergence in C19ORF44-Associated Retinal Degeneration despite an Identical Genotype: A Case Report.Case reports in ophthalmologyArticle
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24 authors.
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Abstract
purposeTo identify the genetic cause for disease in individuals affected with inherited retinal disease and to characterize their retinal phenotype and the properties of the underlying gene.
methodsParticipants underwent a comprehensive ophthalmological evaluation, including best-corrected visual acuity, visual field testing, fundus autofluorescence, optical coherence tomography, and electroretinography. Genetic analyses included exome, genome, and Sanger sequencing. Gene expression pattern was analyzed by reverse transcription-polymerase chain reaction. Localization of the encoded protein in cells and in the human retina was examined by immunofluorescence staining.
resultsFour different pathogenic variants in C19orf44 were identified in 15 biallelic individuals from 11 unrelated families. The most common variant was c.549_550del p.(Ser185ProfsTer2). Most individuals were affected with a unique clinical phenotype characterized by late-onset patchy perifoveal chorioretinal atrophy and electroretinographic features of rod-cone degeneration. C19orf44 is expressed in various human tissues, including the retina, where it was found in the outer nuclear layer and in the outer plexiform layer. In cultured cells (hTERT RPE-1 and HeLa) and in human primary fibroblasts, C19orf44 is found in the nucleus, and it is downregulated during mitosis.
conclusionBased on our results, C19orf44 is crucial for normal human retinal function, and pathogenic variants in this gene are associated with autosomal recessive inherited retinal disease.
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