A novel compound heterozygous mutation of the SMARCAL1 gene leading to mild Schimke immune-osseous dysplasia: a case report
نویسندگان
چکیده
BACKGROUND Schimke immune-osseous dysplasia (SIOD, OMIM 242900) is characterized by spondyloepiphyseal dysplasia, T-cell deficiency, renal dysfunction and special facial features. SMARCAL1 gene mutations are determined in approximately 50% of patients diagnosed with SIOD. CASE PRESENTATION The case presented here is that of a 6-year-old boy who was born at 33 weeks to healthy, non-consanguineous Chinese parents. He presented with short stature (95 cm; <3rd percentile) and proteinuria. Initially suspected of having IgM nephropathy, the patient was finally diagnosed with mild Schimke immune-osseous dysplasia. One novel mutation (p.R817H) and one well-known mutation (p.R645C) was identified in the SMARCAL1 gene. CONCLUSION This report describes a clinical and genetic diagnostic model of mild SIOD. It also highlights the importance of molecular testing or clinical diagnosis and the guidance it provides in disease prognosis.
منابع مشابه
Non-Hodgkin Lymphoma in a Child with Schimke Immuno-Osseous Dysplasia
Schimke immuno-osseous dysplasia is a rare autosomal recessive multisystem disorder characterized by steroid-resistant nephrotic syndrome, immunodeficiency, and spondyloepiphy-seal dysplasia. Mutations in SWI/SNF2 related, matrix associated, actin dependent regulator of chromatin, subfamily a-like 1 (SMARCAL1) gene are responsible for the disease. The present report describes, for the f...
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BACKGROUND Schimke immuno-osseous dysplasia (SIOD, OMIM #242900) is an autosomal-recessive pleiotropic disorder characterized by spondyloepiphyseal dysplasia, renal dysfunction and T-cell immunodeficiency. SIOD is caused by mutations in the gene SMARCAL1. CASE PRESENTATION We report the clinical and genetic diagnosis of a 5-years old girl with SIOD, referred to our Center because of nephrotic...
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Schimke immune-osseous dysplasia (SIOD) is a rare autosomal recessive disorder presented with specific facial features, skeletal dysplasia, steroid resistance nephrotic syndrome (SRNS) and cellular immune insufficiency. This is a SIOD case reported from Iran. He was 5 years old boy when evaluated for proteinuria and short stature. In appearance, we detected hyperpigmented macules, kyphosc...
متن کاملNovel compound mutations of SMARCAL1 associated with severe Schimke immuno-osseous dysplasia in a Chinese patient.
BACKGROUND Schimke immuno-osseous dysplasia (SIOD) is a rare autosomal recessive pleiotropic disease caused by mutations in the SMARCAL1 gene. To date there have been no data from the Chinese population. Here, we report the first SIOD case in the Chinese population. No case with gross carpal bone age retardation has been reported previously. METHODS The index patient was diagnosed by clinical...
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Schimke immuno-osseous dysplasia is an autosomal recessive multisystem disorder caused by defects in SWI/SNF-related, matrix-associated, actin-dependent regulator of chromatin, subfamily a-like 1 gene (SMARCAL1). SMARCAL1 product is a helicase that has role in selective cellular proliferation. The disorder is characterized by spondyloepiphyseal dysplasia with short stature, nephropathy, T cell ...
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