Search results for "High risk neuroblastoma"

showing 5 items of 5 documents

Frequency and prognostic impact of ALK amplifications and mutations in the European Neuroblastoma Study Group (SIOPEN) high-risk neuroblastoma trial …

2021

Purpose: In neuroblastoma (NB), the ALK receptor tyrosine kinase can be constitutively activated through activating point mutations or genomic amplification. We studied ALK genetic alterations in high-risk (HR) patients on the HR-NBL1/SIOPEN trial to determine their frequency, correlation with clinical parameters, and prognostic impact. Materials and methods: Diagnostic tumor samples were available from 1,092 HR-NBL1/SIOPEN patients to determine ALK amplification status (n = 330), ALK mutational profile (n = 191), or both (n = 571). Results: Genomic ALK amplification (ALKa) was detected in 4.5% of cases (41 out of 901), all except one with MYCN amplification (MNA). ALKa was associated with …

0301 basic medicineCancer ResearchPrognostic ImpactAnaplastic Lymphoma Kinase/genetics; Child Preschool; Clinical Trials Phase III as Topic; Europe; Female; Follow-Up Studies; Gene Amplification; Humans; Infant; Male; Mutation Rate; N-Myc Proto-Oncogene Protein/genetics; Neuroblastoma/genetics; Prognosis; Randomized Controlled Trials as Topic; Risk Factors; Survival RateEuropean Neuroblastoma Study GroupSIOPENRELAPSE03 medical and health sciencesNeuroblastoma0302 clinical medicineText miningNeuroblastomahemic and lymphatic diseasesREVEALSMedicine and Health SciencesKINASEMedicineHigh risk neuroblastomaHETEROGENEITYCRIZOTINIBSEGMENTAL CHROMOSOMAL ALTERATIONSACTIVATING MUTATIONSPEDIATRIC-PATIENTSbusiness.industryALK receptor tyrosine kinasePoint mutationREARRANGEMENTSCHEMOTHERAPYmedicine.diseaseDoenças Genéticas030104 developmental biologyALKOncology030220 oncology & carcinogenesisCancer researchbusiness
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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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High-risk neuroblastoma: where do we go?

2020

Oncologymedicine.medical_specialtybusiness.industryMEDLINEInduction chemotherapyHematologyInduction Chemotherapymedicine.diseaseNeuroblastomaText miningOncologyInternal medicineNeuroblastomaCell Line TumorMedicineHumansHigh risk neuroblastomabusinessAnnals of oncology : official journal of the European Society for Medical Oncology
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Intra-Tumour Genetic Heterogeneity and Prognosis in High-Risk Neuroblastoma

2021

Simple Summary Neuroblastoma (NB) is the most common extra-cranial solid paediatric cancer and is responsible for 15% of childhood cancer deaths. Patients with NB are characterized by presenting a very heterogeneous clinic (inter-tumoural heterogeneity) and also both spatial and temporal intra-tumour heterogeneity (ITH) reflected in their genetic aberrations, which may be the consequence of the coexistence of different microenvironments within the tumour. Applying pangenomic techniques to detect genomic aberrations in different biopsies (solid and liquid) of high risk NB (HR-NB) we have detected spatial ITH in a surprisingly high percentage (almost 40%) of the studied cohort. Moreover, a po…

Solid tumourCancer Research<i>MYCN</i> amplificationGenetic heterogeneityMYCN amplificationNeoplasms. Tumors. Oncology. Including cancer and carcinogensGenomicsctDNABiologySNPaArticleOncologyMycn amplificationGenomic ProfileCancer researchgenomicssegmental chromosomal aberrationHigh risk neuroblastomaLiquid biopsytumour microenvironmentSurvival rateRC254-282Cancers
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