title: Chromosomal alterations detected by comparative genomic hybridization in nonfunctioning endocrine pancreatic tumors.
abstract: We have used comparative genomic hybridization to investigate changes in DNA copy number in 20 nonfunctioning endocrine pancreatic tumors. The total number of regional DNA imbalances per tumor showed variation from case to case and high genetic heterogeneity was observed. From 1 to 22 chromosomal anomalies were detected in 13 of the 20 cases evaluated. Overall gains predominated over losses with a ratio of about 3.9:1 (58 gains/15 losses). The mean total number of regions displaying imbalances increased from 1.25 per tumor for benign tumors to 5.25 for malignant tumors, although statistical significance was not reached (P=0.074).
authors.affiliation: Centro Nazionale Malattie Rare, Dipartimento di Biologia Cellulare e Neuroscienze, Istituto Superiore di Sanità, Viale Regina Elena, 299 00161 Rome, Italy.
authors.forename: Giovanna
authors.initials: G
authors.lastname: Floridia
authors.forename: Giulia
authors.initials: G
authors.lastname: Grilli
authors.forename: Marco
authors.initials: M
authors.lastname: Salvatore
authors.forename: Chiara
authors.initials: C
authors.lastname: Pescucci
authors.forename: Patrick S
authors.initials: PS
authors.lastname: Moore
authors.forename: Aldo
authors.initials: A
authors.lastname: Scarpa
authors.forename: Domenica
authors.initials: D
authors.lastname: Taruscio
mesh_terms: D000328:Adult; D000368:Aged; D002869:Chromosome Aberrations; D005260:Female; D018740:Genetic Heterogeneity; D006801:Humans; D007515:Islets of Langerhans; D019656:Loss of Heterozygosity; D008297:Male; D008875:Middle Aged; D009693:Nucleic Acid Hybridization / Q000379:methods*; D010190:Pancreatic Neoplasms / Q000235:genetics* / Q000473:pathology