title: Delineation of an interstitial 9q22 deletion in basal cell nevus syndrome.
abstract: Basal cell nevus syndrome (Gorlin syndrome) is an autosomal dominant disorder characterized by the presence of multiple basal cell carcinomas (BCC), odontogenic keratocysts, palmoplantar pits, and calcification in the falx cerebri caused by mutational inactivation of the PTCH gene. In few cases, the syndrome is due to a microdeletion at 9q22. Using high-resolution chromosome analysis we have identified a patient with the karyotype, 46,XY,del(9)(q21.3q31) de novo. He had typical clinical features consistent with basal cell nevus syndrome, but also additional features likely to be caused by loss of additional chromosomal material in this region. The deletion breakpoints were characterized with fluorescence in situ hybridization (FISH) analysis using BAC clones. The 15 Mb long deletion includes 87 RefSeq genes including PTCH. Hemizygosity of one or more genes might contribute to the additional symptoms observed in this patient.
authors.affiliation: The John F. Kennedy Institute, Glostrup, Denmark.
authors.forename: S E
authors.initials: SE
authors.lastname: Boonen
authors.forename: D
authors.initials: D
authors.lastname: Stahl
authors.forename: S
authors.initials: S
authors.lastname: Kreiborg
authors.forename: T
authors.initials: T
authors.lastname: Rosenberg
authors.forename: V
authors.initials: V
authors.lastname: Kalscheuer
authors.forename: L A
authors.initials: LA
authors.lastname: Larsen
authors.forename: N
authors.initials: N
authors.lastname: Tommerup
authors.forename: K
authors.initials: K
authors.lastname: Brøndum-Nielsen
authors.forename: Z
authors.initials: Z
authors.lastname: Tümer
mesh_terms: D000328:Adult; D001478:Basal Cell Nevus Syndrome / Q000235:genetics* / Q000473:pathology; D002872:Chromosome Deletion; D002899:Chromosomes, Human, Pair 9 / Q000235:genetics*; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007621:Karyotyping; D008297:Male