GEO DataSets

(Submitter supplied) Although a number of genes related to melanoma development have been identified through candidate gene screening approaches, few studies have attempted to conduct such analyses on a genome-wide scale. Here we use Illumina 317K whole-genome single-nucleotide polymorphism arrays to define a comprehensive allelotype of melanoma based on loss of heterozygosity (LOH) and copy number changes in a panel of 76 melanoma cell lines. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array; SNP genotyping by SNP array

Platform:

GPL5711

76 Samples

Download data

(Submitter supplied) Allele call files from on 250K StyI SNP array using DNA from 60 human cell lines from metastasized melanoma and from 44 corresponding peripheral blood mononuclear cells (CEL and CHP files provided).

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array; SNP genotyping by SNP array

Platform:

GPL3720

104 Samples

Download data: CEL, CHP

(Submitter supplied) Malignant melanoma is an aggressive, heterogeneous disease where new biomarkers for diagnosis and clinical outcome are needed. We searched for chromosomal aberrations that characterize its pathogenesis using 47 different melanoma cell lines and tiling-resolution BAC-arrays for comparative genomic hybridization. Major melanoma genes, including BRAF, NRAS, CDKN2A, TP53, CTNNB1, CDK4 and PTEN were examined for mutations. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by genome tiling array

Platform:

GPL4723

47 Samples

Download data: TXT

(Submitter supplied) BACKGROUND: Cervical carcinoma develops as a result of multiple genetic alterations. Different studies investigated genomic alterations in cervical cancer mainly by means of metaphase comparative genomic hybridization (mCGH) and microsatellite marker analysis for the detection of loss of heterozygosity (LOH). Currently, high throughput methods such as array comparative genomic hybridization (array CGH), single nucleotide polymorphism array (SNP array) and gene expression arrays are available to study genome-wide alterations. more...

Organism:

Homo sapiens

Type:

Expression profiling by array; Genome variation profiling by genome tiling array; Genome variation profiling by SNP array; SNP genotyping by SNP array

Platforms:

GPL4012 GPL2641 GPL201

40 Samples

Download data: CEL, GPR

(Submitter supplied) Structural changes of chromosomes play important roles in the carcinogenesis of colorectal carcinoma (CRC). Here, by using SNP-typing arrays, we have tried to screen for recurrent chromosome copy number changes and loss-of-heterozygosity in the genome of colorectal carcinoma. Genomic DNA was isolated from tumor and paired normal tissues of CRC (n=94), and was hybridized to Affymetrix Mapping 50K Xba 240 arrays. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array

Platform:

GPL2005

188 Samples

Download data: CEL

(Submitter supplied) Screening for gene copy-number alterations (CNAs) has improved by applying genome-wide microarrays, where SNP arrays also allow analysis of loss of heterozygozity (LOH). We here analyzed 10 chronic lymphocytic leukemia (CLL) samples using four different high-resolution platforms: BAC arrays (32K), oligonucleotide arrays (185K, Agilent), and two SNP arrays (250K, Affymetrix and 317K, Illumina). Cross-platform comparison revealed 29 concordantly detected CNAs, including known recurrent alterations, which confirmed that all platforms are powerful tools when screening for large aberrations. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array; Genome variation profiling by genome tiling array

4 related Platforms

40 Samples

Download data: CEL, CHP, GPR, TXT

(Submitter supplied) We applied whole-genome single nucleotide polymorphism (SNP) arrays to define a comprehensive genetic profile of 23 esophageal adenocarcinoma (EAC) primary tumor biopsies based on loss of heterozygosity (LOH) and DNA copy number changes. Alterations were common, averaging 97 (range 23-208) per tumor. LOH and gains averaged 33 (range 3-83) and 31 (range 11-73) per tumor, respectively. Copy neutral LOH events averaged 27 (range 7-57) per EAC. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array; SNP genotyping by SNP array

Platform:

GPL5711

24 Samples

Download data: TXT

(Submitter supplied) We applied Illumina’s 317K high-density SNP-arrays to profile chromosomal aberrations in clear cell renal cell carcinoma (ccRCC) from 80 patients and analyzed the association of LOH/amplification events with clinicopathological characteristics

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array

Platforms:

GPL6979 GPL6980

80 Samples

Download data

(Submitter supplied) Chromosome 1p LOH was seen in one-third of cases. LOH events on chromosomes 11q and 1p were generally accompanied by copy number loss. The one exception was on chromosome 11p, where LOH in all 4 cases was accompanied by normal copy number or diploidy, implying uniparental disomy. Amplification of MYCN was also noted, and also, amplification of a second gene, ALK, in a single case. Keywords: SNP array analysis

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array; SNP genotyping by SNP array

Platforms:

GPL1266 GPL2641

44 Samples

Download data: CEL, TXT

(Submitter supplied) allele call files from analysis of NCI60 cell line DNA on 100K SNP arrays. Keywords = NCI60, SNP array, cancer cell line Keywords: other

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array; SNP genotyping by SNP array

Platforms:

GPL2014 GPL2015

128 Samples

Download data: CEL

(Submitter supplied) The transcriptome of 55 cutaneous melanoma cell lines was assessed using RNAseq.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

55 Samples

Download data: CSV, XLSX

(Submitter supplied) Stromal contamination is one of the major confounding factors in the analysis of primary solid tumor samples by single nucleotide polymorphism (SNP) arrays. As we propose to employ genome-wide SNP microarray analysis as a diagnostic platform for neuroblastoma, the sensitivity, specificity, and accuracy of these studies must be optimized. In order to investigate the effects of stroma, we derived early passage cell lines from nine primary tumors and compared their genomic signature with that of the primary tumors by 100K SNP array analysis. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array; SNP genotyping by SNP array

Platforms:

GPL2004 GPL2005

54 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

SNP genotyping by SNP array; Genome variation profiling by SNP array; Methylation profiling by array

Platforms:

GPL9183 GPL4091 GPL3720

148 Samples

Download data: CEL, TXT

(Submitter supplied) The aim of this study is to establish an integrative profiling of recurrent UPDs/UPPs, CNAs and genome-wide methylation status in sporadic CRC. Our results indicate that regions showing high frequencies of UPDs/UPPs mostly coincide with regions typically involved in genomic losses such as chromosome arms 1p, 5q, 8p, 14q, 17p, 18q, 20p, and 22q. Of these, chromosome arms 5q, 14q, 17p, and 20p preferentially showed UPDs/UPPs over genomic losses suggesting that tumor cells must maintain the disomic state of certain genes to favor cellular fitness. more...

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL9183

58 Samples

Download data: TXT

(Submitter supplied) The aim of this study is to establish an integrative profiling of recurrent UPDs/UPPs, CNAs and genome-wide methylation status in sporadic CRC. Our results indicate that regions showing high frequencies of UPDs/UPPs mostly coincide with regions typically involved in genomic losses such as chromosome arms 1p, 5q, 8p, 14q, 17p, 18q, 20p, and 22q. Of these, chromosome arms 5q, 14q, 17p, and 20p preferentially showed UPDs/UPPs over genomic losses suggesting that tumor cells must maintain the disomic state of certain genes to favor cellular fitness. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by genome tiling array

Platform:

GPL4091

30 Samples

Download data: TXT

(Submitter supplied) The aim of this study is to establish an integrative profiling of recurrent UPDs/UPPs, CNAs and genome-wide methylation status in sporadic CRC. Our results indicate that regions showing high frequencies of UPDs/UPPs mostly coincide with regions typically involved in genomic losses such as chromosome arms 1p, 5q, 8p, 14q, 17p, 18q, 20p, and 22q. Of these, chromosome arms 5q, 14q, 17p, and 20p preferentially showed UPDs/UPPs over genomic losses suggesting that tumor cells must maintain the disomic state of certain genes to favor cellular fitness. more...

Organism:

Homo sapiens

Type:

SNP genotyping by SNP array; Genome variation profiling by SNP array

Platform:

GPL3720

60 Samples

Download data: CEL, XLS

(Submitter supplied) Copy number analysis of human GBM samples were performed, and a high frequency of deletions of the PTPRD gene on chromosome 9p23-24.1 were identified. Keywords: SNP microarray, glioblastoma multiforme, copy number, amplification, deletion

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array

Platform:

GPL3718

58 Samples

Download data: CEL

(Submitter supplied) Relatively little is known about the genetic aberrations of conjunctival melanomas (CoM) and their correlation with clinical and histomorphological features as well as prognosis. The aim of this large collaborative multicentre study was to determine potential key biomarkers for metastatic risk and any druggable targets for high-risk metastatic CoM. Using Affymetrix Single Nucleotide Polymorphism genotyping arrays on 59 CoM, we detected frequent amplifications on chromosome (chr) 6p and deletions on 7q, and characterised mutation-specific copy number alterations. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array

Platform:

GPL6801

59 Samples

Download data: CEL, CHP, TXT

(Submitter supplied) Primary brain tumors are the fourth leading cause of cancer mortality in adults under the age of 54 years and the leading cause of cancer mortality in children in the United States. Therapy for the most common type of primary brain tumors, gliomas, remains suboptimal. The development of new and more effective treatments will likely require a better understanding of the biology of these tumors. Here, we show that use of the high-density 100K single-nucleotide polymorphism arrays in a large number of primary tumor samples allows for a much higher resolution survey of the glioma genome than has been previously reported in any tumor type. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array; SNP genotyping by SNP array

Platforms:

GPL2005 GPL2004

356 Samples

Download data

(Submitter supplied) The accurate mapping of recurring DNA copy number aberrations (CNAs), a hallmark feature of the cancer genome, has facilitated the discovery of tumor suppressor genes and oncogenes. Microarray-based assays designed to detect these chromosomal copy number alterations on a genome-wide and high-resolution scale have emerged as a cornerstone technology in the genomic era. The diversity of commercially-available platforms prompted a systematic comparison of five copy number profiling assays for their ability to detect 2-fold copy number gain and loss (4n or 1n, respectively) as well as focal high-amplitude CNAs. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by genome tiling array; Genome variation profiling by SNP array

8 related Platforms

151 Samples

Download data: CEL, TXT