GEO DataSets

(Submitter supplied) New and effective therapeutical options are available for the treatment of Rheumatoid Arthritis. One of such treatments is rituximab, and chimeric anti-CD20 antibody that selectively depletes the CD20+ B cell subpopulation. Similar to established anti-TNF alpha therapies, there is a subgroup of RA patients that do not experience significant clinical response. Therefore, one of the major necessities in actual RA therapeutical management is to identify reliable predictors of the response to this therapies. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL2507

23 Samples

Download data: TXT

(Submitter supplied) Objectives: We monitored the mRNA expression profiles of peripheral blood cells during treatment with a tumor necrosis factor-a inhibitor, infliximab, in patients with rheumatoid arthritis (RA). Using a DNA microarray analysis, we demonstrated a unique set of genes, with distinct baseline and post-treatment changes in expression between responders and non-responders to infliximab treatment.Methods: Using a customized low-density cDNA microarray and a reliable data collection system, we monitored the mRNA expression profiles of whole blood cells from 18 RA patients before and after the infusion of infliximab for up to 22 weeks. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL5460

72 Samples

Download data: TXT

(Submitter supplied) A genome-scale assessment of peripheral blood B-cell molecular homeostasis in patients with rheumatoid arthritis. Keywords: Rheumatoid Arthritis, B-cells

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL3463

2 Samples

Download data

(Submitter supplied) Introduction of biologics, such as infliximab, to the therapy of rheumatoid arthritis (RA) patients has revolutionized the treatment of this disease. However, biomarkers for predicting the efficacy of the drug at an early phase of treatment for selecting real responders have not been found. We here present predictive markers based on a thorough transcriptome analysis of white blood cells from RA patients. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL4133

68 Samples

Download data: TXT

(Submitter supplied) Spots were selected that had an expression level higher than 1.6 the local background. The use of a common reference sample allows the comparison of the relative expression levels across the tissue samples. All genes were expressed relative to their median expression level across the arrays of the same microarray platform, allowing us to combine the data from the 2 platforms. Data from Lymphochip and Stanford Human cDNA arrays was combined per patient. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

4 related Platforms

28 Samples

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(Submitter supplied) Despite the increasing of available drugs in RA, the overall rate of non response is 30 to 40% of treated patients. To optimize the drug prescription and better elaborate the therapeutic strategies, gene profiling in PBMCs was used to predict the responsiveness to anakinra. Thirty two patients treated by anakinra (100mg/day s.c.) and méthotrexate, were categorized as responders whenever a change of Disease Activity Score 28 > 1.2 was obtained at 3 months. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL5215

49 Samples

Download data

(Submitter supplied) Objective: Rituximab displays therapeutic benefits in the treatment of rheumatoid arthritis (RA) patients resistant to TNF blockade. However, the precise role of B cells in the pathogenesis of RA is still unknown. In this study we investigated the global molecular effects of rituximab in synovial biopsies obtained from anti-TNF resistant RA patients before and after administration of the drug. Methods: Paired synovial biopsies were obtained from the affected knee of anti-TNF resistant RA patients before (T0) and 12 weeks after initiation of rituximab therapy (T12). more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS4903

Platform:

GPL570

24 Samples

Download data: CEL, CHP

Analysis of synovial biopsy samples from anti-TNF resistant rheumatoid arthritis (RA) patients 12 wks after the start of rituximab (RTX) therapy. RTX is a mAb against CD20, expressed on subsets of B cells. Results provide insight into how RTX-induced B cell depletion interferes with RA pathogenesis.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 agent, 12 individual sets

Platform:

GPL570

Series:

GSE24742

24 Samples

Download data: CEL, CHP

(Submitter supplied) B cell depletion therapy is efficacious in RA patients failing on TNF blocking agents. However, approximately 40-50% of the rituximab-treated RA patients have a poor response. We investigated wheter baseline gene expression levels can discriminate between clinical nonresponders and responders to rituximab

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6947

14 Samples

Download data: TXT

(Submitter supplied) We sought to find a gene-expression multigene predictor of response to infliximab therapy in Rheumatoid Arthritis patients. Using internal and external cross-validation systems we have built and validated an 8-gene predictor for response to infliximab.

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS3628

Platform:

GPL2507

44 Samples

Download data: TXT

Analysis of whole blood from rheumatoid arthritis patients at baseline of infliximab therapy. Infliximab is an anti-TNF alpha antibody. Clinical response to infliximab determined at week 14 of therapy. Results identify a gene expression signature for predicting the response to infliximab.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 2 disease state sets

Platform:

GPL2507

Series:

GSE12051

44 Samples

Download data: TXT

(Submitter supplied) The gene expression profiles of HL-60 cells were determined for two doses (IC20 and IC50) of three chemicals (ethylbenzene, tricholoretylene and dichloromethane) and for the IC50 doses of 3 other chemicals (benzene, toluene and o-xylene) at a 3 h time point. Assays were performed in triplicate for each chemical/dose, and individual gene-expression profiles were determined for each chemical at the tested concentration doses.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL7080 GPL10048

27 Samples

Download data: GPR

(Submitter supplied) Background: Although the use of TNF inhibitors has fundamentally changed the way rheumatoid arthritis (RA) is treated, not all patients respond well. It is desirable to facilitate the identification of responding and non-responding patients prior to treatment, not only to avoid unnecessary treatment but also for financial reasons. In this work we have investigated the transcriptional profile of synovial tissue sampled from RA patients before anti-TNF treatment with the aim to identify biomarkers predictive of response. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL7768

62 Samples

Download data: GPR

(Submitter supplied) Purpose: The goal of the study was to integrate verified signals from previous genetic association studies with gene expression and pathway analysis for discovery of new candidate genes and signalling networks, relevant for rheumatoid arthritis (RA). Method:RNA-seq based expression analysis of 377 genes from previously verified RA-associated loci was performed in blood cells from 5 newly diagnosed, non-treated RA patients, 7 patients with treated RA and 12 healthy controls. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

24 Samples

Download data: TXT

(Submitter supplied) Rheumatoid arthritis (RA) is a systemic autoimmune disease and its underlying molecular mechanisms are still poorly understood. Previously a CD4 T-cell microarray study has only focused arthritis patients. We aimed to compare the molecular profiles of active RA versus healthy control in CD4 T cells. We used microarrays to detail the global programme of gene expression in active RA and healthy control.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

22 Samples

Download data: CEL, CHP

(Submitter supplied) Rheumatoid arthritis (RA) is a chronic, inflammatory joint disease of unknown etiology and pronounced inter-patient heterogeneity. To characterize RA at the molecular level and to uncover key pathomechanisms, we performed whole-genome gene expression analyses. Synovial tissues from rheumatoid arthritis patients were compared to those from to normal donors. Keywords: repeat sample

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS1857

Platform:

GPL1740

8 Samples

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(Submitter supplied) Rheumatoid arthritis (RA) is a chronic, inflammatory joint disease of unknown etiology and pronounced inter-patient heterogeneity. To characterize RA at the molecular level and to uncover key pathomechanisms, we performed whole-genome gene expression analyses. Synovial tissues from rheumatoid arthritis patients were compared to those from osteoarthritis patients and to normal donors. Keywords: disease state analysis

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2126

Platform:

GPL91

15 Samples

Download data: CEL

Analysis of synovial tissues from patients with rheumatoid arthritis (RA) and osteoarthritis. RA is a chronic, inflammatory joint disease with pronounced inter-patient heterogeneity. Results provide insight into the pathogenesis of RA.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 3 disease state sets

Platform:

GPL91

Series:

GSE1919

15 Samples

Download data: CEL

Expression profiling of synovial tissues of patients with rheumatoid arthritis (RA). RA is a chronic inflammatory disease characterized by pain, stiffness, swelling, and destruction of joints. Results provide insight into the pathogenesis of RA.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 disease state sets

Platform:

GPL1740

Series:

GSE2053

8 Samples

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(Submitter supplied) Lichen planopilaris (LPP) and pseudopelade of Brocq (PPB) are two scarring alopecia diagnoses that often exhibit similar clinical features. Some suggest LPP and PPB are not distinct diseases, but rather different clinical presentations in a spectrum derived from the same underlying pathogenetic mechanism. We explored the degree of similarity between LPP and PPB gene expression patterns and the potential for common and unique gene pathway and gene activity in LPP and PPB using microarrays. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL3877

16 Samples

Download data: TXT