Ontology highlight
ABSTRACT:
PROVIDER: PRJEB85793 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| GM210714025.vcf.csi | Other | |||
| GM210714025.vcf.gz | Vcf | |||
| GM210714026T.vcf.csi | Other | |||
| GM210714026T.vcf.gz | Vcf |
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Project description:miRNA expression analysis was done on Uveal melanoma, metastatic and non - metastatic case in formalin fixed paraffin embedded sections, identified from case registry and confirmed by Chromosome insitu hybridization harboring monosomy 3 aberration in metastaic case and no aberration in non metastatic case. 19 miRNAs were found to be expressed only in class I tumors (choroidal melanoma) and not in class II (liver metastasis) and 11 miRNAs were found to be expressed only in class II and not in class I. The tumors were found to harbor oncomirs in both choroidal melanoma and metastasizing melanoma targeting tumor suppressor genes and metastatic suppressor genes. None of the differentially expressed miRNAs in either case were found to be located on the chromosomes which have been proved to carry chromosomal abnormalities. Rather it was found that genes targeted by the miRNAs were found to be present in chromosomal regions that are often found to be deleted 8p22, 13q and 17p.
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Project description:Patients with genome-wide paternal uniparental disomy (GWpUPD) usually exhibit clinical features of Beckwith-Wiedemann syndrome (BWS) and a 46,XX karyotype, with all chromosomes showing isodisomy. Here, we report the case of a boy with classical BWS features harboring a 46,XY karyotype. Genetic analysis of autosomes and sex chromosomes revealed two distinct paternal genomes in peripheral blood leukocytes, whereas a normal biparental genome was detected in oral swabs under chimeric conditions. These findings indicated that the patient had genome-wide paternal uniparental heterodisomy (GWpUPhD). To our knowledge, this is the first reported case of a GWpUPhD chimera with a 46,XY karyotype. We therefore propose a potential mechanism underlying this phenomenon.
2026-04-04 | GSE326179 | GEO
Project description:Case Report: from germline to metastasis, genetic landscape of a rapidly-progressing Cutaneous Melanoma Patient
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Project description:miRNA expression analysis was done on Uveal melanoma, metastatic and non - metastatic case in formalin fixed paraffin embedded sections, identified from case registry and confirmed by Chromosome insitu hybridization harboring monosomy 3 aberration in metastaic case and no aberration in non metastatic case. 19 miRNAs were found to be expressed only in class I tumors (choroidal melanoma) and not in class II (liver metastasis) and 11 miRNAs were found to be expressed only in class II and not in class I. The tumors were found to harbor oncomirs in both choroidal melanoma and metastasizing melanoma targeting tumor suppressor genes and metastatic suppressor genes. None of the differentially expressed miRNAs in either case were found to be located on the chromosomes which have been proved to carry chromosomal abnormalities. Rather it was found that genes targeted by the miRNAs were found to be present in chromosomal regions that are often found to be deleted 8p22, 13q and 17p. Organism used: Homo sapiens. * Slides: Human miRNA V2 8x15k Arrays AMADID: 19118. * Starting material: 18 slides with formalin fixed Paraffin embedded sections-20 μm. * RNA Samples used: 225-94-DUP, 225-94-E, 727-07-DUP, 727-07 -E. * Labeling kit: Agilent miRNA labeling reagent and Hybridization Kit. * Labeling Method: Ligation of one cyanine3-pCp molecule to the 3' end of RNA molecule with greater than 90% efficiency that generates fluorescent miRNA. * Total RNA and cRNA Purification Kit: Biorad MicroBio Spin 6 columns. * Hybridization Kit: Agilent miRNA Hybridization kit. Hybridization protocol See Agilent Technologies website for miRNA microarray hybridization and wash protocol: http://www.chem.agilent.com/scripts/LiteraturePDF.asp?iWHID=50500 Scan protocol Laser detection of Cyanine 3 and Cyanine 5 fluorescence is performed using a confocal scanning instrument containing two tuned lasers, which excite Cyanine dyes at the appropriate wavelengths. Description Microarrays were scanned on an Agilent scanner (G2505C) at 100% PMT with 10% for lower intensity (XDR Scanning).Data extraction was carried out with Agilent Feature Extraction software (version 9.1), and normalization was done using linear per array algorithm according to the manufacturer’s protocol Data processing Feature extracted data was analyzed using GeneSpring GX v 10.0.2 software from Agilent. Normalization of the data was done in GeneSpring GX using the recommended Percentile shift normalization (50th percentile) . Further quality control of normalized data was done using correlation based condition tree to eliminate bad experiments. High expressed miRNA's were clustered using gene tree to identify significant gene expression patterns.
2009-07-11 | E-GEOD-17037 | biostudies-arrayexpress
Project description:In this project we used Clinical Exome Sequencing to find the molecular defect in a patient with choroidal melanoma
2025-02-15 | PRJEB85793 | EVA