# SF3B4 Frameshift Variants Represented a More Severe Clinical Manifestation in Nager Syndrome
> Ulhaq Z.S.
URL kanonis: https://discover.unhas.ac.id/publications/sf3b4-frameshift-variants-represented-a-more-severe-clinical-manifestation-in-na
Jurnal / Konferensi: Cleft Palate Craniofacial Journal
Tahun terbit: 2023
DOI: https://doi.org/10.1177/10556656221089156
ISSN: 10556656
Kuartil SJR: Q1
Citations: 14
## Authors
- Ulhaq Z.S.
## Abstract
Nager syndrome (NS) is a rare disease marked with craniofacial and preaxial limb anomalies. In this report, we summarized the current evidence to determine a possible genotype-phenotype association among NS individuals. Twenty-four articles comprising of 84 NS (including 9 patients with a severe form of NS [Rodriguez syndrome]) patients were examined, of which 76% were caused by variants in SF3B4 (OMIM *605593, Splicing Factor 3B, Subunit 4). Within the SF3B4 gene, variants located in exon 3 commonly occurred (20%) from a total identified variant, while hotspot location was identified in exon 1 (12%), and primarily occurred as frameshift variants (64%). Thirty-five distinct pathogenic variants within SF3B4 gene were identified with two common sites, c.1A > G and c.1060dupC in exons 1 and 5, respectively. Although no significant genotype-phenotype association was found, it is notable that patients with frameshift SF3B4 variants and predicted to lead to nonsense-mediated RNA decay (NMD) of the transcripts tended to have a more severe clinical manifestation. Additionally, patients harboring variants in exons 2 and 3 displayed a higher proportion of cardiac malformations. Taken together, this article summarizes the pathogenic variants observed in SF3B4 and provides a possible genotype-phenotype relationship in this disease.
## Keywords
- Medicine
- Frameshift mutation
- Dermatology
- Genetics
- Mutation
- Biology
- Gene
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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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