title: Detailed characterization of 7q deletions by multicolor banding (mBAND) in marginal zone cell lymphoma.
abstract: High-resolution multicolor banding (mBAND) analysis was applied to precisely fine-map the genomic extent of 7q deletions in a series of 26 marginal zone lymphoma patients displaying the abnormality on conventional karyotypes. Using this approach, the breakpoints and the extent of deletions revealed by conventional banding techniques had to be re-defined in 70% of cases. Although no common minimal region of deletion was delineated, mBAND demonstrated the involvement of the 7q32 region in more than 90% of cases. In addition, unsuspected translocations and intrachromosomal changes could be identified in four cases. Taken together, these data demonstrate that mBAND represents an alternative cytogenetic tool in the comprehensive analysis of chromosome aberrations in hematologic malignancies, allowing rapid screening and precise delineation of structural rearrangements of a defined chromosome. This also confirms the localization in the vicinity of band 7q32 of putative candidate gene(s) involved in the pathogenic development of the disease.
authors.affiliation: Service d'Hématologie Biologique, Centre Hospitalier Lyon Sud - Hospices Civils de Lyon et Université Claude Bernard Lyon I, EA 3737, 69495 Pierre-Bénite, Cedex 69495, France.
authors.forename: Sophie
authors.initials: S
authors.lastname: Gazzo
authors.forename: Ilse
authors.initials: I
authors.lastname: Chudoba
authors.forename: Alexandra
authors.initials: A
authors.lastname: Traverse-Glehen
authors.forename: Lucile
authors.initials: L
authors.lastname: Baseggio
authors.forename: Pascale
authors.initials: P
authors.lastname: Felman
authors.forename: Françoise
authors.initials: F
authors.lastname: Berger
authors.forename: Gilles
authors.initials: G
authors.lastname: Salles
authors.forename: Sandrine
authors.initials: S
authors.lastname: Hayette
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Magaud
authors.forename: Evelyne
authors.initials: E
authors.lastname: Callet-Bauchu
mesh_terms: D002871:Chromosome Banding; D002872:Chromosome Deletion; D002897:Chromosomes, Human, Pair 7 / Q000235:genetics*; D005260:Female; D006801:Humans; D016393:Lymphoma, B-Cell / Q000235:genetics*; D008297:Male