Abstract
Objectives
Gaucher disease (GD) is the most common inherited lysosomal storage disease, caused by mutations in acid β-glucosidase (GBA) gene. This study aimed to identify mutations in Andalusia patients with GD and their genotype-phenotype correlation.
Methods
Descriptive observational study. University Hospital Virgen del Rocio patients diagnosed from GD from 1999 to 2019 were included. Demographic and clinical data, β-glucocerebrosidase activity, variants pathogenic in GBA gene and biomarkers for monitoring treatment were collected from digital medical record.
Results
Twenty-six patients with aged between 1 day and 52 years were studied. A total of six mutations described as pathogenic and one mutation not described above [c.937T>C (p.Tyr313His)] were identified in the GBA gene, four patients were homozygotes and 22 compound heterozygotes. Twenty-four patients were diagnosed in non-neuropathic form (type 1) and two cases presented neurological involvement (type 2 or 3). The most common variant was c.1226A>G (p.Asn409Ser), which was detected in 24 patients, followed by c.1448T>C (p.Leu483Pro) variant, identified in 13 patients. The c.1448T>C (p.Leu483Pro) mutation has been presented in the most severe phenotypes with neurological involvement associated with type 2 and 3 GD, while c.1226A>G (p.Asn409Ser) mutation has not been associated with neurological alterations. Splenomegaly and bone disease were the most frequent clinical manifestations, and thrombocytopenia was the most common hematological disorder.
Conclusions
The c.1226A>G (p.Asn409Ser) and c.1448T>C (p.Leu483Pro) mutations were the most common. The c.937T>C (p.Tyr313His) was identified as a novel mutation. The c.1448T>C (p.Leu483Pro) mutation was associated with neurological alterations and c.1226A>G (p.Asn409Ser) mutation has not been associated it.
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Research funding: None declared.
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Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: Authors state no conflict of interest.
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Informed consent: Informed consent was obtained from all individuals included in this study.
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Ethical approval: This study adhered to the ethical recommendations of the Declaration of Helsinki (Fortaleza, 2013) [11], and was approved by the Ethics and Research Committee of the Virgen Macarena and Virgen del Rocio University Hospitals (Code: 0826-N-15).
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