GEO DataSets

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

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL6102 GPL6947

79 Samples

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(Submitter supplied) Purpose: The incidence of malignant melanoma is increasing worldwide in fair-skinned populations. Melanomas respond poorly to systemic therapy, and metastatic melanomas inevitably become fatal. Although spontaneous regression, likely due to immune defense activation, rarely occurs, we lack a biological rationale and predictive markers in selecting patients for immune therapy. Experimental Design: We performed unsupervised hierarchical clustering of global gene expression data from stage IV melanomas in 57 patients. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6947

22 Samples

Download data: TXT

(Submitter supplied) Purpose: The incidence of malignant melanoma is increasing worldwide in fair-skinned populations. Melanomas respond poorly to systemic therapy, and metastatic melanomas inevitably become fatal. Although spontaneous regression, likely due to immune defense activation, rarely occurs, we lack a biological rationale and predictive markers in selecting patients for immune therapy. Experimental Design: We performed unsupervised hierarchical clustering of global gene expression data from stage IV melanomas in 57 patients. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6102

57 Samples

Download data: TXT

(Submitter supplied) Expression .CEL files from Affymetrix HG-U133A 2.0 arrays using DNA from 14 human cell lines derived from metastasized melanoma

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL571

14 Samples

Download data: CEL

(Submitter supplied) Melanomas on mucosal membranes, acral skin (soles, palms, and nail bed), and skin with chronic sun-induced damage have infrequent mutations in BRAF and NRAS, genes within the mitogenactivated protein (MAP) kinase pathway commonly mutated in melanomas on intermittently sun-exposed skin. This raises the question of whether other aberrations are occurring in the MAP kinase cascade in the melanoma types with infrequent mutations of BRAF and NRAS. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by genome tiling array

Platform:

GPL2024

16 Samples

Download data: TIFF, TXT

(Submitter supplied) We compared genome-wide DNA copy number alterations and mutational status in BRAF and RAS genes of 126 primary melanomas arising in four groups in which UV exposure differ: skin with (n=30), and without chronic sun damage (n=40); palms, soles and subungual (acral) sites (n=36) (which have very little sun exposure); and mucosa (n=20) (no sun exposure). Keywords: other

Organism:

Homo sapiens

Type:

Genome variation profiling by genome tiling array

Platform:

GPL2024

126 Samples

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

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

295 Samples

Download data: CEL, CSV

(Submitter supplied) We used microarrays to profile the expression levels of 285 ovarian samples in order to identify molecular subtypes of the tumour Keywords: disease state analysis

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

285 Samples

Download data: CEL, CSV

(Submitter supplied) We used microarrays to profile the expression levels of 5 tumour samples Keywords: expression difference of cell types in tumour samples

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

10 Samples

Download data: CEL, CSV

(Submitter supplied) Prediction of outcome for melanoma patients with surgically-resected macroscopic nodal metastases is very imprecise. We performed a comprehensive clinicopathologic assessment of fresh-frozen macroscopic nodal metastases and the preceding primary melanoma, somatic mutation profiling and gene expression profiling to identify determinants of outcome in 79 melanoma patients. In addition to disease stage <II at initial presentation, the following clinical and pathologic factors were independent predictors of improved outcome (ORs for survival >4yr, 90%CI): presence of a nodular component in the primary melanoma (6.8, 0.6-76.0), and small cell size (11.1, 0.8-100.0) or low pigmentation (3.0, 0.8-100.0) in the nodal metastases. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6884

79 Samples

Download data: TXT

(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) In order to improve our understanding of microRNA (miRNA) deregulation in melanoma development and possible consequences for patient survival, miRNA expression profiles were determined, using an array based approach, in melanoma tumors, melanoma cell lines and normal melanocytes. Differentially expressed miRNAs were evaluated in relation to clinical characteristics, patient prognosis in terms of melanoma-specific survival, and mutational status for BRAF and NRAS.

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by array

Platform:

GPL9081

40 Samples

Download data: TXT

(Submitter supplied) The molecular biology of metastatic potential in melanoma has been studied many times previously and changes in the expression of many genes have been linked to metastatic behaviour. What is lacking is a systematic characterization of the regulatory relationships between genes whose expression is related to metastatic potential. Such a characterization would produce a molecular taxonomy for melanoma which could feasibly be used to identify epigenetic mechanisms behind changes in metastatic behaviour. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL97 GPL570 GPL96

105 Samples

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(Submitter supplied) The molecular biology of metastatic potential in melanoma has been studied many times previously and changes in the expression of many genes have been linked to metastatic behaviour. What is lacking is a systematic characterization of the regulatory relationships between genes whose expression is related to metastatic potential. Such a characterization would produce a molecular taxonomy for melanoma which could feasibly be used to identify epigenetic mechanisms behind changes in metastatic behaviour. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

45 Samples

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(Submitter supplied) The molecular biology of metastatic potential in melanoma has been studied many times previously and changes in the expression of many genes have been linked to metastatic behaviour. What is lacking is a systematic characterization of the regulatory relationships between genes whose expression is related to metastatic potential. Such a characterization would produce a molecular taxonomy for melanoma which could feasibly be used to identify epigenetic mechanisms behind changes in metastatic behaviour. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL96

30 Samples

Download data

(Submitter supplied) The molecular biology of metastatic potential in melanoma has been studied many times previously and changes in the expression of many genes have been linked to metastatic behaviour. What is lacking is a systematic characterization of the regulatory relationships between genes whose expression is related to metastatic potential. Such a characterization would produce a molecular taxonomy for melanoma which could feasibly be used to identify epigenetic mechanisms behind changes in metastatic behaviour. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL97 GPL96

30 Samples

Download data

(Submitter supplied) We investigated a cohort of 34 archival cutaneous melanoma samples by Agilent 40 kb-resolution CGH array. We found a non-random distribution of precise CNAs predictive for clinical outcome. Although most of the alterations defined in this study have been already reported, we mapped novel melanoma-specific CNAs at highest accuracy. Moreover, our data revealed distinct amplifications hotspots, some of which were validated by quantitative real-time PCR, enabling the identification of novel melanoma oncogenic candidates. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by array

Platform:

GPL10152

34 Samples

Download data: TXT

(Submitter supplied) Analysis of gene expression profiles in metastatic melanoma to validate prognostic signatures.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

214 Samples

Download data: TXT

(Submitter supplied) Recent studies revealed trajectories of mutational events in early melanomagenesis, but the accompanying changes in gene expression are far less understood. Therefore, we performed a comprehensive RNA-Seq analysis of laser-microdissected melanocytic nevi (n=23) and primary melanoma samples (n=57) and characterized the molecular mechanisms of early melanoma development. Using self-organizing maps, unsupervised clustering and analysis of pseudotime (PT) dynamics to identify evolutionary trajectories, we describe here two transcriptomic types of melanocytic nevi (N1 and N2) and primary melanomas (M1 and M2). more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

80 Samples

Download data: TXT

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

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

15 Samples

Download data: CEL