title: False-positive results using a Gaucher diagnostic kit--RecTL and N370S.
abstract: The Pronto Gaucher kits and Pronto Gaucher RecTL Amplification Mix, marketed to identify mutations in the gene for glucocerebrosidase, are widely used for the diagnosis of Gaucher disease. Subjects genotyped using this kit have been reported with an allele including both the common N370S mutation and RecTL, a previously described Gaucher mutation arising from recombination between the glucocerebrosidase gene and pseudogene. Using direct sequencing and real-time PCR, we show that the RecTL, N370S allele is a false positive result, demonstrating possible pitfalls of diagnostic kits.
authors.affiliation: Section on Molecular Neurogenetics, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892-3708, USA.
authors.forename: Jae Hyuk
authors.initials: JH
authors.lastname: Choi
authors.forename: Arash
authors.initials: A
authors.lastname: Velayati
authors.forename: Barbara K
authors.initials: BK
authors.lastname: Stubblefield
authors.forename: Avi
authors.initials: A
authors.lastname: Orr-Urtreger
authors.forename: Ziv
authors.initials: Z
authors.lastname: Gan-Or
authors.forename: Nahid
authors.initials: N
authors.lastname: Tayebi
authors.forename: Ellen
authors.initials: E
authors.lastname: Sidransky
mesh_terms: D005189:False Positive Reactions; D005776:Gaucher Disease / Q000175:diagnosis*; D005962:Glucosylceramidase / Q000235:genetics*; D006801:Humans; D011933:Reagent Kits, Diagnostic
chemical_list: D011933:Reagent Kits, Diagnostic; D005962:Glucosylceramidase