Abstract
BackgroundLamb-Shaffer syndrome (LAMSHF, MIM 616,803) is a rare neurodevelopmental disorder due to haploinsufficiency of SOX5. Furthermore, studies about the clinical features of LAMSHF patients with same allele of c.1477C > T (p. R493*) are very limited.Case presentationWe analyzed the phenotypes of one of our cases and two previously reported cases with c.1477C > T (p. R493*), and reviewed the correlating literature. A de novo heterozygous variation c.1477C > T (p. R493*) in SOX5 was identified in a 4 years and 2 months old boy with global development delay by trio-based whole exome sequencing. We compared our case and previously 2 cases reported with recurrent variation, the overlapping clinical features are global developmental delay or intellectual disability, language delay and scoliosis, but their other clinical characteristics are different.ConclusionsThis study suggests that the clinical features of LAMSHF patients with recurrent variations in the SOX5 gene are different. It is suggested that the LAMSHF-related SOX5 gene should be screened and included as one of the candidate genes for neurodevelopmental disorders of unknown etiology.
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