GEO DataSets

(Submitter supplied) Background an Aim: Epigenetics are thought to play a major role in the carcinogenesis of patients that develop multiple colorectal cancers (CRC) in the non-hereditary setting. Previous studies have suggested concordant DNA hypermethylation between tumor pairs. However, only a few methylation markers have been analyzed. This study was aimed at describing the underlying epigenetic signature that differentiates multiple from solitary colorectal cancer tumors using a genome-scale DNA methylation profiling. more...

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL8490

41 Samples

Download data: TXT

(Submitter supplied) The Illumina GoldenGate® methylation array was used to evaluate DNA methylation at 1,505 CpG sites in 807 cancer-related genes in 91 consecutive CRC samples and 28 matched normal colonic mucosa.

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL9183

119 Samples

Download data

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

Organism:

Homo sapiens

Type:

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

Platforms:

GPL10123 GPL15182

172 Samples

Download data: TXT

(Submitter supplied) The concept of the CpG island methylator phenotype (CIMP) in colorectal cancer (CRC) is widely accepted, though the timing of its occurrence and its interaction with other genetic defects are not fully understood. Our aim in this study was to unravel the molecular development of CIMP cancers by dissecting their genetic and epigenetic signatures in precancerous and malignant colorectal lesions.

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL15182

88 Samples

Download data: TXT

(Submitter supplied) The concept of the CpG island methylator phenotype (CIMP) in colorectal cancers (CRCs) is widely accepted, though the timing of its occurrence and its interaction with other genetic defects early during carcinogenesis remains largely unknown. Our aim was to uncover the molecular evolution of CIMP CRCs through integrative analysis of endoscopic, histological and molecular signatures in precancerous and malignant colorectal lesions.

Organism:

Homo sapiens

Type:

Genome variation profiling by genome tiling array

Platform:

GPL10123

84 Samples

Download data: TXT

(Submitter supplied) We performed gene expression profiling of 26 colorectal tumors and matched histologically normal adjacent colonic tissue samples using the Illumina Ref-8 whole-genome expression BeadChip. We performed an integrated analysis of promoter DNA methylation and gene expression data to investigate the effects of DNA hypermethylation on gene expression.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6883

52 Samples

Download data: TXT

(Submitter supplied) To characterize DNA methylation-based subgroups in colorectal cancer, we performed genome-scale DNA methylation profiling of 125 colorectal tumor samples and 29 histologically normal-adjacent colonic tissue samples using the Illumina Infinium DNA methylation assay, which assesses the DNA methylation status of 27,578 CpG sites located at the promoter regions of 14,495 protein-coding genes. We identified four DNA methylation-based subgroups of CRC using model-based cluster analyses. more...

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL8490

154 Samples

Download data: TXT

(Submitter supplied) DNA methylation was analysed using the Illumina Infinium HumanMethylation 450 Beadchip in 94 matched tissue pairs of colorectal cancer patients.

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL13534

192 Samples

Download data: TXT

(Submitter supplied) Genetic and epigenetic alterations are a fundamental aspect of colorectal cancer formation. There is considerable heterogeneity between colorectal cancers regarding the mutations and methylated genes they carry, and this heterogeneity may arise early in the polyp-cancer sequence. However, our understanding of the epigenetic alterations and gene mutations in colon adenomas and their relation to colorectal cancer is incomplete. more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL13534

147 Samples

Download data: TXT

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

Organism:

Homo sapiens

Type:

Methylation profiling by high throughput sequencing; Other

Platforms:

GPL24676 GPL15520 GPL16791

376 Samples

Download data

(Submitter supplied) We report the association between CpG islander methylator phenotype (CIMP) and the gut microbiome in human colorectal cancer tumor and adjacent normal tissue.

Organism:

Homo sapiens

Type:

Other

Platform:

GPL15520

228 Samples

Download data: TXT

(Submitter supplied) We report the association between CpG islander methylator phenotype (CIMP) and the gut microbiome in human colorectal cancer tumor and adjacent normal tissue.

Organism:

Homo sapiens

Type:

Methylation profiling by high throughput sequencing

Platforms:

GPL24676 GPL16791

148 Samples

Download data: TXT

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

Organism:

Homo sapiens

Type:

Expression profiling by array; Methylation profiling by genome tiling array

Platforms:

GPL13534 GPL23976 GPL13158

188 Samples

Download data: CEL, IDAT

(Submitter supplied) The tubular adenoma sample cohort (accrued by Janssen Pharmaceuticals) consisted of 127 high-risk baseline adenoma samples acquired retrospectively by Avaden Biosciences. High risk patients are defined here as presenting a tubular adenoma ? 10mm, 3 or more adenomas, adenomas with villous histology or adenomas showing high-grade dysplasia based on Lieberman et al. Patients with familial adenomatous polyposis (FAP) and Lynch syndrome were excluded. more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL23976

66 Samples

Download data: IDAT, TXT

(Submitter supplied) The tubular adenoma sample cohort (accrued by Janssen Pharmaceuticals) consisted of 127 high-risk baseline adenoma samples acquired retrospectively by Avaden Biosciences. High risk patients are defined here as presenting a tubular adenoma ? 10mm, 3 or more adenomas, adenomas with villous histology or adenomas showing high-grade dysplasia based on Lieberman et al. Patients with familial adenomatous polyposis (FAP) and Lynch syndrome were excluded. more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL13534

61 Samples

Download data: IDAT, TXT

(Submitter supplied) The tubular adenoma sample cohort (accrued by Janssen Pharmaceuticals) consisted of 127 high-risk baseline adenoma samples acquired retrospectively by Avaden Biosciences. High risk patients are defined here as presenting a tubular adenoma ? 10mm, 3 or more adenomas, adenomas with villous histology or adenomas showing high-grade dysplasia based on Lieberman et al. Patients with familial adenomatous polyposis (FAP) and Lynch syndrome were excluded. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL13158

61 Samples

Download data: CEL

(Submitter supplied) Methylation is measured from opposite tumor sides of human colorectal cancers

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL21145

48 Samples

Download data: IDAT, XLSX