GSE87465

Gene expression profiling of mucosal biopsies from pediatric patients with moderately to severely active ulcerative colitis

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

19 case / 0 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

To acquire a better understanding of the molecular pathogenesis of pediatric UC with different disease extent, we performed mRNA microarray studies to compare gene expression of patients with extensive UC vs. that of patients with limited UC. No significant difference was observed in mRNA expression between extensive and limited UC in pediatric patients.

Overall design

Mucosal biopsy samples (13 extensive and 6 limited UC) were collected for RNA extraction and microarray analysis.

Source Evidence

4 sources
Source Contribution Status
GEO

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

Sample records
19 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

Primary GEO citations and related PubMed articles that mention this dataset.

1 linked publication 1 DOI

Primary publication

  1. Molecular Comparison of Adult and Pediatric Ulcerative Colitis Indicates Broad Similarity of Molecular Pathways in Disease Tissue. Journal of pediatric gastroenterology and nutrition, 2018
Available

Metadata Quality Components

Analysis Readiness

Not ready
55% DE readiness

Contrast completeness

10/25 pts

Only one side of the contrast is present; downstream DE needs both groups.

Minimum group size

0/20 pts

Minimum group size cannot be evaluated until a complete contrast exists.

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

0/10 pts

Critical warnings must be resolved before downstream analysis.

Metadata normalization

10/10 pts

Metadata quality is high enough to support downstream handoff.

Blockers

  • No complete case/control contrast is available.
  • Critical dataset warnings must be resolved.

Next Steps

  • Resolve critical warnings before downstream analysis.

Analysis Preparation Checklist

4/6 ready

Group labels reviewed

Blocked

No complete case/control grouping exists yet.

Review the sample grouping table and assign both case and control groups.

Minimum sample count met

Blocked

At least one group has fewer than 2 samples.

Choose a larger dataset or merge only scientifically valid groups.

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.

Analysis preparation checklist contains blocked items.

No complete case/control or treatment/control contrast is available.

At least one comparison group has fewer than two samples.

Critical dataset warnings are present.

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

Study design is model-system or unclear and should be reviewed before 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 Ulcerative colitis Disease context came from Normalization rules.
  • Likely case group Ulcerative colitis 19 samples
  • Likely control group No control group detected 0 samples

Intent Interpretation

  • Downgrade or exclusion reason Comparison: Unclear study design. Specimen: Biopsy. Comparison suitability: 0%. Derived from current-intent ranking reasons.

Ranking Facts

Supporting evidence

  • Interpreted disease metadata: Ulcerative colitis.
  • Processed data is available for downstream review.
  • External evidence: PubMed links 1 publication; 1 DOI available: PMID 29401083.
  • Publication context: Molecular Comparison of Adult and Pediatric Ulcerative Colitis Indicates Broad Similarity of Molecular Pathways in Disease Tissue.. Journal of pediatric gastroenterology and nutrition, 2018. PMID 29401083. DOI 10.1097/MPG.0000000000001898.

Cautions

  • Comparison: Unclear study design. Specimen: Biopsy. Comparison suitability: 0%.
  • Downgraded for tissue search because study design or specimen source is unclear.
  • Downgraded assay: microarray cohorts are separated from the RNA-seq intent.
  • Unclear study design downgraded for patient tissue tumor-vs-normal search intent.
  • Missing or unclear metadata. Unclear study design downgraded for patient tissue tumor-vs-normal search intent.
  • Microarray expression context downgraded below primary bulk RNA-seq for the default 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.
  • Missing or unclear metadata. Comparison - Unclear study design. Specimen - Biopsy. Comparison suitability: 0%.
  • Missing or unclear metadata. Downgraded for tissue search because study design or specimen source is unclear.
  • Comparison suitability score is below the Phase 1 recommended threshold.

Dataset Warnings

Normalized Fields

98 fields

Sample Group Preview

19 rows shown
Show Hide
Study totals: Case 19 | Control 0 | Unassigned 0 | Excluded 0 | Ambiguous 0 19 rows shown
Group Role Accession Title Source / characteristics Reason
Ulcerative colitis Case GSM2332079 Z343899-23 Tissue biopsy Subject: 52; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 16; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332080 J369887-23 Tissue biopsy Subject: 23; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 9; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332081 W457462-23 Tissue biopsy Subject: 39; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 12; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332082 L419087-22 Tissue biopsy Subject: 53; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 17; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332083 Y740511-23 Tissue biopsy Subject: 48; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 12; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332084 Y200913-23 Tissue biopsy Subject: 35; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 10; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332085 K690175-22 Tissue biopsy Subject: 49; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 6; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332086 X399843-23 Tissue biopsy Subject: 36; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 16; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332087 W457491-23 Tissue biopsy Subject: 22; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 16; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332088 Y396214-23 Tissue biopsy Subject: 42; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 15; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332089 W457483-23 Tissue biopsy Subject: 31; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 15; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332090 W457453-23 Tissue biopsy Subject: 19; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 13; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332091 K412777-22 Tissue biopsy Subject: 50; Diseaseextent: EXTENSIVE; Disease: Ulcerative Colitis (UC); Age: 11; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332092 I769988-23 Tissue biopsy Subject: 37; Diseaseextent: LIMITED UC; Disease: Ulcerative Colitis (UC); Age: 7; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332093 I769929-23 Tissue biopsy Subject: 20; Diseaseextent: LIMITED UC; Disease: Ulcerative Colitis (UC); Age: 9; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332094 I769897-23 Tissue biopsy Subject: 38; Diseaseextent: LIMITED UC; Disease: Ulcerative Colitis (UC); Age: 17; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332095 I771787-23 Tissue biopsy Subject: 18; Diseaseextent: LIMITED UC; Disease: Ulcerative Colitis (UC); Age: 16; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332096 Y396209-23 Tissue biopsy Subject: 51; Diseaseextent: LIMITED UC; Disease: Ulcerative Colitis (UC); Age: 15; Tissue: Colon Case marker detected.
Ulcerative colitis Case GSM2332097 Z094865-23 Tissue biopsy Subject: 56; Diseaseextent: LIMITED UC; Disease: Ulcerative Colitis (UC); Age: 15; Tissue: Colon Case 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.