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Genome wide analysis of tumours in individuals with p53-germline mutations

ABSTRACT: Copy number analysis of Affymetrix GW6.0 SNP/CNV arrays was performed for 7 tumours (4 adrenocortical carcinomas, 2 rhabdomyosarcoma and 1 extra-renal rhabdoid tumour) derived from individuals with germline p53-mutations.

ORGANISM(S): Homo sapiens

PROVIDER: GSE34323 | GEO | 2012/01/19

SECONDARY ACCESSION(S): PRJNA151479

REPOSITORIES: GEO

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Genome wide analysis of tumours in individuals with p53-germline mutations

Project description:Copy number analysis of Affymetrix GW6.0 SNP/CNV arrays was performed for 7 tumours (4 adrenocortical carcinomas, 2 rhabdomyosarcoma and 1 extra-renal rhabdoid tumour) derived from individuals with germline p53-mutations. Affymetrix CNV/SNP arrays were performed according to the manufacturer's directions on DNA extracted from fresh frozen tumour samples

2012-01-19 | E-GEOD-34323 | biostudies-arrayexpress

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2013-11-19 | E-GEOD-49674 | biostudies-arrayexpress

Genome-wide DNA methylation profiling of SCCOHT and SMARCB1-mutated rhabdoid tumours

Project description:Extracranial rhabdoid tumours (ECRT) are an aggressive malignancy of infancy and early childhood. The vast majority of cases demonstrate inactivation of SMARCB1 (ECRT_SMARCB1) but, rarely, ECRT can harbour the alternative inactivation of SMARCA4 (ECRT_SMARCA4) instead of SMARCB1. To explore the place of ECRTSMARCA4 in the "rhabdoid tumour" spectrum, we generated and collected from previous studies genome-wide DNA methylation array data (n = 85) from Atypical/Teratoid Rhabdoid Tumours (ATRT), ECRT_SMARCB1, ECRT_SMARCA4 and small cell carcinomas of the ovary, hypercalcaemic type (SCCOHT) tumours. Using dimensionality reduction and unsupervised clustering approaches, our results demonstrate that ECRT_SMARCA4 display an intermediate DNA methylation profile between SCCOHT and ECRT_SMARCB1.

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Analysis of circulating microRNAs in adrenocortical tumours

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Methylation profiling of Malignant Rhabdoid Tumours

Project description:An observational experiment to methylation profile 79 SMARCB1 negative primary tumours from patients diagnosed with Malignant Rhabdoid Tumours.

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SMARCA4-deficient rhabdoid tumours show intermediate molecular features between SMARCB1-deficient rhabdoid tumours and small cell carcinomas of the ovary, hypercalcaemic type.

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MicroRNA expression profiles for paediatric brain tumours

Project description:In this study, we screened a cohort of 57 paediatric brain tumours, with a wide range of pathologies to identify microRNA profiles We analysed the microRNA profiles in paediatric brain tumours as compared to normal adult brain. Our cohort included 14 pilocytic astrocytomas, 3 diffuse astrocytomas, 2 anaplastic astrocytomas, 5 glioblastomas, 14 ependymomas, 9 medulloblastomas, 5 atypical teratoid/rhabdoid tumours, 4 choroid plexus papillomas, 1 papillary glioneuronal, and 7 adult brain controls.

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Project description:Although most thyroid tumours are benign, thyroid cancer represents the most common malignancy of the endocrine system, comprising mainly follicular and papillary thyroid carcinomas (FTC and PTC, respectively). Previous studies have shed some light on the molecular pathogenesis of thyroid cancer but there have not been any comprehensive mass spectrometry-based proteomic studies to reveal protein expression differences between thyroid tumours and the molecular alterations associated with tumour malignancy. We applied a label-free quantitative mass spectrometry analysis to compare normal thyroid tissue with the three most common tumours of the thyroid gland: follicular adenoma, follicular carcinoma and papillary carcinoma.

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