GSE133060

Gene expression data from a cohort of Chilean Ulcerative Colitis human intestinal samples

Whole-study status Not suitable

Dataset does not meet the current suitability threshold.

Whole-study downloads — these do not apply your sample requirements.

Selected cohort requirements

Samples meeting selected requirements: 0 cases / 0 controls

View matching samples

8 case / 8 control samples elsewhere in the study have incomplete or conflicting evidence; they are not included above

Patient pairs verified in indexed sample metadata: 0

A case/control comparison meeting these requirements is not confirmed.

Counts describe samples, not independent patients. Pair verification uses explicit subject identifiers in indexed sample metadata. Zero verified pairs does not establish that the study is unpaired; reported matched-normal design alone is insufficient.

Summary

Different genes, especially cytokines, have been deregulated in the inflammatory environment of intestinal mucosa in ulcerative colitis patients. The effects of differential gene expression such as immunological factors have been described before, however, there is no evidence of alarmins deregulated by microRNAs impacting on the pathophysiology of UC. Our goal is to study deregulated genes in inflamed mucosa for microRNA pairing in a Chilean cohort of patients. We used microarrays to compare inflamed and non inflamed mucosa from chilean ulcerative colitis patients

Overall design

Inflamed and non inflamed human Intestinal biopsies were obtained in colonoscopy from Ulcerative Colitis patients and we performed gene expresion microarrays to analyze the molecular interaction between them and to determine possible relationships associated to the pathophysiology and clinical presentation

Source Evidence

4 sources
Source Contribution Status
GEO

Original dataset metadata, sample metadata, source links, and GEO data availability flags.

Sample records
16 GSM samples
Primary source
recount3

Planned trusted source for processed count availability.

No match found
Expression Atlas

Planned source for curated expression experiment links.

No match found
PubMed

Publication context when PubMed identifiers are already known.

No match found

Metadata Quality Components

Analysis Readiness

Review before analysis
97% DE readiness

Contrast completeness

25/25 pts

Both case and control groups are present in the proposed grouping.

Minimum group size

20/20 pts

Each contrast group has at least 2 samples.

Processed data availability

20/20 pts

Processed data is marked available in the GEO index.

Sample decision clarity

15/15 pts

All samples are assigned to a case or control group.

Blocking warnings

7/10 pts

Warnings are present, but none are critical blockers.

Metadata normalization

10/10 pts

Metadata quality is high enough to support downstream handoff.

Blockers

  • Secondary RNA assay context should be analyzed separately from ordinary bulk RNA-seq.

Next Steps

  • Review blockers and update sample grouping or dataset selection before analysis.

Analysis Preparation Checklist

5/6 ready

Group labels reviewed

Needs review

Siftome proposed case and control labels, but no reviewer confirmation is stored yet.

Open the sample grouping CSV and confirm group labels before analysis.

Minimum sample count met

Ready

Both groups meet the minimum of 2 samples.

Confirm whether the cohort is large enough for the intended statistical analysis.

Processed counts available

Ready

Processed data availability is marked true in the GEO index.

Verify that downloaded processed files contain usable count or expression identifiers.

Ambiguous samples handled

Ready

No review-needed or unassigned samples are present in the proposed grouping.

Review the grouping table for biologically meaningful differences that the automated checks may not detect.

Exclusion decisions recorded

Ready

No hard-excluded samples were detected by the current rules.

Record any manual exclusions in the downstream analysis notes.

Source traceability preserved

Ready

The dataset and sample accessions can be traced back to GEO.

Keep GEO accessions with exported metadata.

Bioinformatician Review

Bioinformatician review required

Ask a bioinformatician to review grouping, count availability, exclusions, and design before DE.

Analysis readiness has blockers that must be resolved before DE.

Assay context may require expert handling before DESeq2-style analysis.

Why This Is Ranked Here

Tumor vs normal
Not suitable Dataset does not meet the current suitability threshold.

Applied Review Decisions

No active review decisions affect this ranking.

Derived Classifications

  • Assay differs from search intent Microarray Search intent expects bulk RNA-seq. Assay came from Normalization rules.
  • Disease context Inflammatory bowel disease, ulcerative colitis Disease context came from Normalization rules.
  • Likely case group Inflamed tissue 8 samples
  • Likely control group Non-inflamed tissue 8 samples

Intent Interpretation

  • Downgrade or exclusion reason Downgraded assay: microarray cohorts are separated from the RNA-seq intent. Derived from current-intent ranking reasons.

Ranking Facts

Supporting evidence

  • Comparison: Disease/model vs control. Specimen: Tissue. Comparison suitability: 0%.
  • Interpreted disease metadata: Inflammatory bowel disease, Ulcerative colitis.
  • Processed data is available for downstream review.

Cautions

  • Downgraded assay: microarray cohorts are separated from the RNA-seq intent.
  • Disease/control design without a tumor/normal comparison is outside tumor/normal triage.
  • Microarray expression context downgraded below primary bulk RNA-seq for the default tissue ranking.
  • Small RNA, miRNA, circRNA, or extracellular-vesicle RNA context downgraded for primary mRNA tissue ranking.
  • Overall score capped because comparison suitability is weak for the selected search intent.
  • Overall score capped because microarray cohorts should be compared separately from RNA-seq cohorts.
  • Comparison suitability score is below the Phase 1 recommended threshold.

Dataset Warnings

Normalized Fields

69 fields

Sample Group Preview

16 rows shown
Show Hide
Study totals: Case 8 | Control 8 | Unassigned 0 | Excluded 0 | Ambiguous 0 16 rows shown
Group Role Accession Title Source / characteristics Reason
Inflamed tissue Case GSM3899211 Inflamed mucosa from UC patient 1 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Inflamed; Mayo score: 2 Explicit sample label case marker detected.
Inflamed tissue Case GSM3899213 Inflamed mucosa from UC patient 2 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Inflamed; Mayo score: 2 Explicit sample label case marker detected.
Inflamed tissue Case GSM3899215 Inflamed mucosa from UC patient 3 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Inflamed; Mayo score: 2 Explicit sample label case marker detected.
Inflamed tissue Case GSM3899217 Inflamed mucosa from UC patient 4 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Inflamed; Mayo score: 2 Explicit sample label case marker detected.
Inflamed tissue Case GSM3899219 Inflamed mucosa from UC patient 5 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Inflamed; Mayo score: 2 Explicit sample label case marker detected.
Inflamed tissue Case GSM3899221 Inflamed mucosa from UC patient 6 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Inflamed; Mayo score: 2 Explicit sample label case marker detected.
Inflamed tissue Case GSM3899223 Inflamed mucosa from UC patient 7 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Inflamed; Mayo score: 3 Explicit sample label case marker detected.
Inflamed tissue Case GSM3899225 Inflamed mucosa from UC patient 8 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Inflamed; Mayo score: 2 Explicit sample label case marker detected.
Non-inflamed tissue Control GSM3899212 Non inflamed mucosa from UC patient 1 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Non Inflamed; Mayo score: 2 Sample-local control marker detected.
Non-inflamed tissue Control GSM3899214 Non inflamed mucosa from UC patient 2 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Non Inflamed; Mayo score: 2 Sample-local control marker detected.
Non-inflamed tissue Control GSM3899216 Non inflamed mucosa from UC patient 3 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Non Inflamed; Mayo score: 2 Sample-local control marker detected.
Non-inflamed tissue Control GSM3899218 Non inflamed mucosa from UC patient 4 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Non Inflamed; Mayo score: 2 Sample-local control marker detected.
Non-inflamed tissue Control GSM3899220 Non inflamed mucosa from UC patient 5 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Non Inflamed; Mayo score: 2 Sample-local control marker detected.
Non-inflamed tissue Control GSM3899222 Non inflamed mucosa from UC patient 6 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Non Inflamed; Mayo score: 2 Sample-local control marker detected.
Non-inflamed tissue Control GSM3899224 Non inflamed mucosa from UC patient 7 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Non Inflamed; Mayo score: 3 Sample-local control marker detected.
Non-inflamed tissue Control GSM3899226 Non inflamed mucosa from UC patient 8 Intestinal mucosal biopsies Diagnosis: Ulcerative Colitis; Tissue: Intestinal mucosal biopsies; Inflammation: Non Inflamed; Mayo score: 2 Sample-local control marker detected.

Use as Discovery Cohort

External Validation Finder

Carry Siftome's disease, organism, specimen, assay, data type, and accession into a validation project. Uncertain fields remain Unknown.