title: A further case of the recurrent 15q24 microdeletion syndrome, detected by array CGH.
abstract: We report on a 10-year-old patient with developmental delay, craniofacial dysmorphism, digital and genital abnormalities. In addition, muscular hypotonia, strabism, and splenomegaly were observed; inguinal and umbilical hernias were surgically corrected. Mucopolysaccharidoses and CDG syndromes could not be found. Chromosome analysis revealed a normal male karyotype (46,XY). A more detailed investigation of the patient's genomic DNA by microarray-based comparative genomic hybridization (array CGH) detected an interstitial 3.7 Mb deletion ranging from 15q24.1 to 15q24.3 which was shown to be de novo. Interstitial deletions involving 15q24 are rare. Sharp et al. (Hum Mol Genet 16:567-572, 2007) recently characterized a recurrent 15q24 microdeletion syndrome with breakpoints in regions of segmental duplications. The de novo microdeletion described here colocalizes with the minimal deletion region of the 15q24 microdeletion syndrome. The distinct clinical phenotype associated with this novel microdeletion syndrome is similar to the phenotype of our patient with respect to specific facial features, developmental delay, microcephaly, digital abnormalities, and genital abnormalities in males. We present a genotype-phenotype correlation and comparison with patients from the literature.
authors.affiliation: Institute of Medical Genetics, Charité Universitätsmedizin Berlin, Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany. eva.klopocki@charite.de
authors.forename: Eva
authors.initials: E
authors.lastname: Klopocki
authors.forename: Luitgard M
authors.initials: LM
authors.lastname: Graul-Neumann
authors.forename: Ulrike
authors.initials: U
authors.lastname: Grieben
authors.forename: Holger
authors.initials: H
authors.lastname: Tönnies
authors.forename: Hans-Hilger
authors.initials: HH
authors.lastname: Ropers
authors.forename: Denise
authors.initials: D
authors.lastname: Horn
authors.forename: Stefan
authors.initials: S
authors.lastname: Mundlos
authors.forename: Reinhard
authors.initials: R
authors.lastname: Ullmann
mesh_terms: D002648:Child; D002872:Chromosome Deletion; D022202:Chromosomes, Artificial, Bacterial; D002884:Chromosomes, Human, Pair 15 / Q000235:genetics*; D055028:Comparative Genomic Hybridization / Q000379:methods; D019465:Craniofacial Abnormalities / Q000235:genetics*; D002658:Developmental Disabilities / Q000235:genetics*; D005385:Fingers / Q000002:abnormalities; D018628:Gene Dosage; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D008297:Male; D010413:Penis / Q000002:abnormalities