title: Sanfilippo type A: new clinical manifestations and neuro-imaging findings in patients from the same family in Israel: a case report.
abstract: BACKGROUND
  Sanfilippo syndrome type A (mucopolysaccharidosis IIIA - MPS IIIA) is an autosomal recessive lysosomal storage disorder caused by a deficiency in sulfamidase.
  
  
  METHODS
  Two daughters (13 and 11 years old) of a consanguineous Palestinian family from the Israeli Arab community were investigated clinically and genetically for the presence of progressive neurodegenerative disease, psychomotor retardation and behavioral abnormalities. Development was normal up to one year of age. Thereafter, progressive motor and speech delay started. Metabolic screening including glycosaminoglycans, karyotype testing and magnetic resonance imaging were normal. Later in the disease, they developed severe spasticity and intellectual disability with autistic features and incontinence. Magnetic resonance imaging revealed diffuse hypomyelination with thinning of the corpus callosum. Genetic examination through whole exome sequencing revealed a homozygous mutation c.416C >T (p.T139M) in the N-sulfoglucosamine sulfohydrolase (SGSH) gene. Repeated biochemical testing at age 11 and 13 revealed increased levels of glycosaminoglycans confirming the diagnosis of Sanfilippo syndrome type A.
  
  
  CONCLUSIONS
  These cases were considered to be the first report of Sanfilippo syndrome in Israel. We recommend that if similar clinical features are present during childhood, it is preferred to go directly and primarily for a genetic diagnosis of Sanfilippo syndrome, then secondarily for other lysosomal storage disorders that may also be involved.
authors.affiliation: The Triangle Regional Research and Development Center, P, O, Box-2167, Kfar Qari' 30075, Israel. rajachsharkia@hotmail.com.
authors.forename: Rajech
authors.initials: R
authors.lastname: Sharkia
authors.forename: Muhammad
authors.initials: M
authors.lastname: Mahajnah
authors.forename: Abdelnaser
authors.initials: A
authors.lastname: Zalan
authors.forename: Chrysovalantis
authors.initials: C
authors.lastname: Sourlis
authors.forename: Peter
authors.initials: P
authors.lastname: Bauer
authors.forename: Ludger
authors.initials: L
authors.lastname: Schöls