Search results for "Copy number aberration"

showing 3 items of 3 documents

Genomic Amplifications and Distal 6q Loss: Novel Markers for Poor Survival in High-risk Neuroblastoma Patients.

2018

Abstract Background Neuroblastoma is characterized by substantial clinical heterogeneity. Despite intensive treatment, the survival rates of high-risk neuroblastoma patients are still disappointingly low. Somatic chromosomal copy number aberrations have been shown to be associated with patient outcome, particularly in low- and intermediate-risk neuroblastoma patients. To improve outcome prediction in high-risk neuroblastoma, we aimed to design a prognostic classification method based on copy number aberrations. Methods In an international collaboration, normalized high-resolution DNA copy number data (arrayCGH and SNP arrays) from 556 high-risk neuroblastomas obtained at diagnosis were coll…

0301 basic medicineOncologyCancer ResearchSomatic cellNeuroblastoma0302 clinical medicineGene duplicationMedicine and Health SciencesHigh risk neuroblastomaN-Myc Proto-Oncogene ProteinABNORMALITIESIntensive treatmentGenomicsArticlesPrognosis3. Good healthOncologyChild Preschool030220 oncology & carcinogenesisChromosomes Human Pair 6Chromosome DeletionINTEGRATIONmedicine.medical_specialtyDNA Copy Number VariationsCLASSIFICATION03 medical and health sciencesAGEInternal medicineNeuroblastomaSTRATIFICATIONClinical heterogeneityBiomarkers TumormedicineHumansGenetic Predisposition to DiseaseCopy number aberrationneoplasmsGenetic Association StudiesNeoplasm StagingACCUMULATIONbusiness.industryOUTCOME PREDICTIONGene AmplificationInfantBiology and Life SciencesDNAmedicine.diseaseDELINEATION030104 developmental biologyCOPY NUMBEROutcome predictionbusiness
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Imbalance between genomic gain and loss identifies high-risk neuroblastoma patients with worse outcomes

2021

Survival in high-risk neuroblastoma (HR-NB) patients remains poor despite multimodal treatment. We aimed to identify HR-NB patients with worse outcomes by analyzing the genomic instability derived from segmental chromosomal aberrations. We calculated 3 genomic instability indexes for primary tumor SNP array profiles from 127 HR-NB patients: (1) Copy number aberration burden (%gainslength+%losseslength), (2) copy number load (CNL) (%gainslength-%losseslength) and (3) net genomic load (NGL) (%gainsamount-%lossesamount). Tumors were classified according to positive or negative CNL and NGL genomic subtypes. The impact of the genomic instability indexes on overall survival (OS) was assessed with…

Male0301 basic medicineGenome instabilityOncologyCancer ResearchCopy number loadSNPa single nucleotide polymorphism arrayNeuroblastoma0302 clinical medicineHigh risk neuroblastomaSegmental chromosomal aberrationsHR high-riskCNA copy number aberrationTumor biologyCNL copy number loaddNGL decreased net genomic loadlcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogensPrognosisPrimary tumornCNL negative copy number loadGI genomic instabilityHomogeneous030220 oncology & carcinogenesisMNA MYCN-amplificationFemaleHR-NB high-risk neuroblastomaNB neuroblastomaSNP arrayOriginal articlemedicine.medical_specialtyDNA Copy Number VariationsiNGL increased net genomic loadpCNL positive copy number loadhetMNA heterogeneous MYCN-amplificationlcsh:RC254-282Polymorphism Single NucleotideGenomic InstabilityUHR ultra-high-riskOS overall survivalNet genomic load03 medical and health sciencesSCA segmental chromosomal aberrationInternal medicineNeuroblastomamedicineHumansNGL net genomic loadGenetic Predisposition to DiseaseGenomic imbalanceGenetic Association StudiesEFS event-free survivalProportional Hazards ModelsChromosome AberrationsPloidieshomMNA homogeneous MYCN-amplificationProportional hazards modelbusiness.industryGene AmplificationGenetic Variationmedicine.diseasePatient Outcome AssessmentCopy number aberration burden030104 developmental biologybusinessNeoplasia
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Aberrant copy numbers of ALK gene is a frequent genetic alteration in neuroblastomas.

2009

A total of 50 neuroblastomas were assessed for frequency of ALK gene copy number aberrations by interphase fluorescence in situ hybridization using a break-apart fluorescence in situ hybridization probe. The data were compared with status of MYCN, 11q, 17q, and 1p36. We observed ALK aberrations (amplification, 1 of 45; gain, 15 of 45 and loss/imbalance, 11 of 45) in a total of 27 (60%) of 45 neuroblastomas. Synchronic MYCN and ALK aberrations accounted for 23 of 45 (51%) tumors; however, MYCN alterations were also detected in 11 (60%) of 18 tumors without ALK aberrations. Our data suggest that copy number aberrations of the ALK gene is a frequent genetic event in the development of neurobla…

medicine.medical_specialtyPathologyGene DosageBiologyPathology and Forensic MedicineNeuroblastomahemic and lymphatic diseasesNeuroblastomamedicineAnaplastic lymphoma kinaseHumansAnaplastic Lymphoma KinaseCopy number aberrationneoplasmsIn Situ Hybridization FluorescenceOncogene ProteinsN-Myc Proto-Oncogene Proteinmedicine.diagnostic_testGenetic AlterationCancerNuclear ProteinsReceptor Protein-Tyrosine KinasesAnatomical pathologyProtein-Tyrosine Kinasesmedicine.diseaseTissue Array AnalysisCancer researchAutonomic neuropathyFluorescence in situ hybridizationHuman pathology
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