Genotype to Phenotype: Identification of Mucopolysaccharidosis Type IIIB (Sanfilippo's B) Case Using Whole Exome Sequencing.

ABSTRACT: Mucopolysaccharidosis type IIIB (Sanfilippo's B; OMIM no.: 252920) is a lysosomal storage disorder caused by defective degradation of heparan sulfate. The enzyme that has decreased function in this disease is α-N acetylglucosaminidase. This enzyme is encoded by the NAGLU gene. A 9-year-old male patient was referred to us with speech disability, developmental delay, hepatomegaly, mild learning disability, and otitis media with effusion complaints. Whole exome sequencing (WES) was performed because of consanguinity between the parents of the patient and the lack of specific prediagnosis. As a result of the patient's WES analysis, a homozygous mutation was detected in the NAGLU gene. The leukocyte enzyme activity was then evaluated to confirm the diagnosis. Alpha-N acetylglucosa

SUBMITTER: Elmas M 

PROVIDER: S-EPMC7853908 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature