6533b833fe1ef96bd129c304
RESEARCH PRODUCT
Genetic Instability and Intratumoral Heterogeneity in Neuroblastoma with MYCN Amplification Plus 11q Deletion
Ana P. BerbegallVictoria CastelMarta PiquerasIrene TadeoTommy MartinssonSamuel NavarroEva VillamónRosa NogueraAnna Djossubject
Malelcsh:MedicineMutually exclusive eventsGenetic analysisPediatricsGenetic profileChromosome BreakpointsNeuroblastomaGene duplicationPathologylcsh:ScienceChildGeneticsOncogene ProteinsN-Myc Proto-Oncogene ProteinMultidisciplinaryNuclear ProteinsOncologyChild PreschoolCytogenetic AnalysisMedicineFemaleChromosome DeletionResearch ArticleGenetic MarkersBiologyPolymorphism Single NucleotideCytogeneticsDiagnostic MedicineNeuroblastomamedicineGeneticsCancer GeneticsHumansIn patientGenetic Predisposition to DiseaseneoplasmsBiologyClinical GeneticsChromosomes Human Pair 11lcsh:RGene AmplificationInfantmedicine.diseaseGenetic markerPediatric OncologyMycn amplificationCancer researchlcsh:QBiomarkersGeneral Pathologydescription
Background/Aim Genetic analysis in neuroblastoma has identified the profound influence of MYCN amplification and 11q deletion in patients’ prognosis. These two features of high-risk neuroblastoma usually occur as mutually exclusive genetic markers, although in rare cases both are present in the same tumor. The purpose of this study was to characterize the genetic profile of these uncommon neuroblastomas harboring both these high-risk features. Methods We selected 18 neuroblastomas with MNA plus 11q loss detected by FISH. Chromosomal aberrations were analyzed using Multiplex Ligation-dependent Probe Amplification and Single Nucleotide Polymorphism array techniques. Results and Conclusion This group of tumors has approximately the same high frequency of aberrations as found earlier for 11q deleted tumors. In some cases, DNA instability generates genetic heterogeneity, and must be taken into account in routine genetic diagnosis.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-01-14 | PLoS ONE |