ArticleMolecular genetics & genomic medicine2023
Characterization of a novel non-canonical splice site variant (c.886-5T>A) in NBAS and description of the associated phenotype.
Article in Molecular genetics & genomic medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 5 citations in OpenAlex.
- A novel compound heterozygous NBAS variant with HLH and multisystem involvement: expanding the clinical spectrum and literature review.Frontiers in immunology · 2026Review
- Hepatic Phenotype in NBAS-Associated Disease: Clinical Course, Prognostic Factors and Outcome in 230 Patients.Liver international : official journal of the International Association for the Study of the Liver · 2025Observational
- Expansion of the ABCA4-Associated Retinopathy Spectrum: Severe Variants Can be Associated With Early-Onset Severe Retinal Dystrophy.Investigative ophthalmology & visual science · 2025Article
- Uncovering the genetic architecture of inherited retinal disease in a consanguineous Iranian cohort.NPJ genomic medicine · 2025Article
- Characterization of a novel non-canonical splice site variant (c.886-5T>A) in NBAS and description of the associated phenotype.Molecular genetics & genomic medicine · 2023Article
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundBiallelic pathogenic variants in the neuroblastoma-amplified sequence (NBAS) gene manifest in a broad spectrum of disorders, including, but not limited to recurrent acute liver failure, skeletal dysmorphism, susceptibility to infections, and SOPH syndrome with its cardinal symptoms of short stature, optic atrophy, and Pelger-Huët anomaly. We aimed to present clinical and genetic characteristics of two sisters (20 and 15 years old) who were diagnosed with optic atrophy and cone dystrophy in childhood. Genome sequencing revealed two novel variants in NBAS in compound heterozygous state in both sisters, namely a 1-bp deletion predicted to result in a premature termination codon (c.5104del; p.(Met1702*)), and a non-canonical splice site variant of unclear significance (c.886-5T>A; p.?).
resultsClinical examination and history revealed cone dystrophy, optic atrophy, and Pelger-Huët anomaly, but no short stature, recurrent acute liver failure, or susceptibility to infections. RNA analysis revealed that the c.886-5T>A variant results in two aberrant transcripts that are predicted to lead to in frame amino acid changes in the β-propeller region of the protein.
conclusionWe hypothesize that the phenotype of our subjects, which appears to be at the end of the spectrum of NBAS-related disorders, could be explained by residual protein function mediated by the non-canonical splice site variant c.886-5T>A. Our study contributes to the existing knowledge on the genotypic and phenotypic spectrum of NBAS-related disorders.
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