GEO DataSets

(Submitter supplied) The whole-genome oligonucleotide microarray analysis of peripheral blood samples can contribute to the determination of distant blood markers of local pathophysiological alterations in colorectal diseases. These markers can lead to alternative screening procedures. Keywords: whole genomic expression

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

30 Samples

Download data: CEL

(Submitter supplied) Gene expression profile based classification of colonic diseases are suitable for identification of diagnostic mRNA expression patterns which can establish the basis of a new molecular biological diagnostic method Keywords: whole genomic expression

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

33 Samples

Download data: CEL

(Submitter supplied) We had previously demonstrated an increased proapoptotic effect of Imatinib (STI571) in combination with Amifostine (AMI) in K562 cell line. In this study we used genomic scale gene expression profiling to monitor changes at transcriptional level in K562 cells during the treatment with AMI+STI571. We identified a transcriptional repressor of survival genes, known as BTF, which triggers a pro-apoptotic signal, potentially helpful to overcome the resistance to STI571. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL2829

4 Samples

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(Submitter supplied) The purpose of our study was to better understand the genetic mechanism of oncogenesis for human colorectal cancer and to identify potential new tumour markers of use in clinical practice. Results: Comparing cancerous tissues with normal colonic mucosa we identified 584 known genes (3%) differentially expressed to a significant degree (p<0.001). Many of the transcripts that were more abundant in tumours than in non-neoplastic tissues appear to reflect important events for colon carcinogenesis. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL2829

24 Samples

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(Submitter supplied) Using Affymetrix microarray technology we analyzed the gene expression profiles of the most important pathological categories of bladder cancer in order to detect potential marker genes. Applying an unsupervised cluster algorithm we observed clear differences between tumor and control samples, as well as between superficial and muscle invasive tumors. According to cluster results, the T1 high grade tumor type presented a global genetic profile which could not be distinguished from invasive cases. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

12 Samples

Download data: CEL

(Submitter supplied) Background: Colorectal cancers are believed to arise predominantly from adenomas. Although these precancerous lesions have been subjected to extensive clinical, pathological, and molecular analyses, little is currently known about the global gene expression changes accompanying their formation. Results: To characterize the molecular processes underlying the transformation of normal colonic epithelium, we compared the transcriptomes of 32 prospectively collected adenomas with those of normal mucosa from the same individuals. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2947

Platform:

GPL570

64 Samples

Download data: CEL, CHP

Analysis of colorectal adenomas and normal mucosas from 32 patients. Results provide insight into the molecular mechanisms underlying the formation of colorectal adenomas.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 disease state, 32 individual sets

Platform:

GPL570

Series:

GSE8671

64 Samples

Download data: CEL, CHP

(Submitter supplied) BACKGROUND: Assessment of gene expression in peripheral blood may provide a noninvasive screening test for allograft rejection. We hypothesized that changes in peripheral blood expression profiles would correlate with biopsy-proven rejection and would resolve after treatment of rejection episodes. METHODS AND RESULTS: We performed a case-control study nested within a cohort of 189 cardiac transplant patients who had blood samples obtained during endomyocardial biopsy (EMB). more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2386

Platform:

GPL96

21 Samples

Download data: CEL

Analysis of peripheral blood from cardiac transplant patients with allograft rejection and from the same patients after resolution of rejection with augmented immunosuppression. Results provide insight into potential use of peripheral blood profiling for detection of cardiac allograft rejection.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 3 individual sets

Platform:

GPL96

Series:

GSE5967

21 Samples

Download data: CEL

(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) Samples were taken from either surgically resected specimens or during surveillance colonoscopic examination. The expression profiles were determined using Affymetrix Human Genome U133 Plus 2.0 arrays. Comparison between the sample groups allow to identify a set of discriminating genes that can be used for molecular markers for predicting development of cancer and/or dysplasia in ulcerative colitis, and to characterize potential diagnostic markers in UC-associated neoplasm. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

121 Samples

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(Submitter supplied) Serrated adenocarcinomas are morphologically different from conventional adenocarcinomas. The serrated pathway has recently been proposed to represent a novel mechanism of colorectal cancer (CRC) formation. However, whether they are biologically different and truly form a distinct subclass of CRC, is not known. This study shows that the gene expression profile of serrated and conventional CRCs differs from each others and that serrated CRCs are not only morphologically novel, but also biologically distinct subclass of CRC. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2201

Platform:

GPL96

37 Samples

Download data: CEL, EXP, RPT

Comparison of serrated and conventional colorectal adenocarcinoma tumor samples. Results differentiate serrated from conventional colorectal carcinomas (CRC) and provide insight into the molecular pathogenesis of serrated CRC.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 disease state sets

Platform:

GPL96

Series:

GSE4045

37 Samples

Download data: CEL, EXP, RPT

(Submitter supplied) Background: Causative genes for autosomal dominantly inherited familial adenomatous polyposis (FAP) and hereditary non-polyposis colorectal cancer (HNPCC) have been well characterized. There is, however, another 10-15 % early onset colorectal cancer (CRC) whose genetic components are currently unknown. In this study, we used DNA chip technology to systematically search for genes differentially expressed in early onset CRC. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2609

Platform:

GPL570

22 Samples

Download data: CEL

Analysis of normal-appearing colonic mucosa of early onset colorectal cancer (CRC) patients without a prior family history of CRC. Results provide insight into the molecular pathogenesis of early onset CRC.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 disease state sets

Platform:

GPL570

Series:

GSE4107

22 Samples

Download data: CEL

(Submitter supplied) Background and Aims: Gene expression analysis of colon biopsies using high-density oligonucleotide microarray can contribute to the understanding of local pathophysiological alterations and to functional classification of precancerous adenoma, different stage colorectal carcinomas (CRC) and inflammatory bowel diseases (IBD). Results: Significant overexpression of collagen IV, lipocalin-2, caveolin-1, calumenin genes, and significant dowregulation of aquaporin-8, amnionless homolog, prostaglandin D2 receptor genes were detected in CRC patients compared to normal. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

53 Samples

Download data: CEL

(Submitter supplied) Purpose: The management of adrenocortical tumors (ACTs) is complex, compounded by the difficulty in discriminating benign from malignant tumors using conventional histology. The Weiss score is the current most widely used system for ACT diagnosis but it has limitations, particularly with ACTs with a score of 3. The am of this study was to identify molecular markers whose expression can discriminate adrenocortical carcinomas (ACCs) from adrenocortical adenomas (ACAs) by microarray gene expression profiling and to determine their clinical applicability by using immunohistochemistry (IHC). more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

34 Samples

Download data: CEL, CHP

(Submitter supplied) Chromosomal instability (CIN) is the hallmark of colorectal adenoma to carcinoma progression in 85% of cases, with 20q gain as the most prominent aberration. Yet, the oncogenes at this chromosomal gain are still largely unknown. Here, we aimed to identify oncogenes at 20q involved in colorectal adenoma to carcinoma progression by measuring the effect of 20q gain on gene expression in this amplicon. more...

Organism:

Homo sapiens

Type:

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

5 related Platforms

217 Samples

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