Summary
Analysis of the difference in gene expression between colorectal cancer samples and control samples
Scores are usable, but sample metadata contains review-only concerns.
Whole-study downloads — these do not apply your sample requirements.
Samples meeting selected requirements: 0 cases / 0 controls
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.
Analysis of the difference in gene expression between colorectal cancer samples and control samples
Total RNA was extracted from colorectal cancer primary tumors and lymph nodes metastasis and compared to RNA extracted from lymph nodes and colon tissue of control patients
| Source | Contribution | Status |
|---|---|---|
| GEO |
Original dataset metadata, sample metadata, source links, and GEO data availability flags.
|
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.
4 linked publications
4 DOIs
Primary publication
Related publications
|
Available |
Both case and control groups are present in the proposed grouping.
Each contrast group has at least 2 samples.
Processed data is marked available in the GEO index.
All samples are assigned to a case or control group.
Warnings are present, but none are critical blockers.
Metadata quality is high enough to support downstream handoff.
No readiness blockers detected.
Siftome proposed case and control labels, but no reviewer confirmation is stored yet.
Open the sample grouping CSV and confirm group labels before analysis.Both groups meet the minimum of 2 samples.
Confirm whether the cohort is large enough for the intended statistical analysis.Processed data availability is marked true in the GEO index.
Verify that downloaded processed files contain usable count or expression identifiers.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.No hard-excluded samples were detected by the current rules.
Record any manual exclusions in the downstream analysis notes.The dataset and sample accessions can be traced back to GEO.
Keep GEO accessions with exported metadata.Ask a bioinformatician to review grouping, count availability, exclusions, and design before DE.
Assay context may require expert handling before DESeq2-style analysis.
No active review decisions affect this ranking.
Microarray expression context was detected; compare separately from RNA-seq cohorts.
Multiple disease or phenotype arms were detected. The displayed grouping summarizes the full dataset; select the requested disease-specific contrast before analysis.
Microarray datasets are downgraded in the patient-tissue tumor-normal intent unless secondary assays are explicitly enabled.
| Group | Role | Accession | Title | Source / characteristics | Reason |
|---|---|---|---|---|---|
| Colorectal cancer | Case | GSM4196531 | Colorectal cancer lymph node no1 | Lymph node Disease state: Stage III | Case marker detected. |
| Colorectal cancer | Case | GSM4196532 | Colorectal cancer lymph node no1_2 | Lymph node Disease state: Stage III | Case marker detected. |
| Colorectal cancer | Case | GSM4196533 | Colorectal cancer lymph node no2 | Lymph node Disease state: Stage III | Case marker detected. |
| Tumor sample | Case | GSM4196537 | Colorectal cancer primary tumor no1 | Primary tumor Disease state: Stage III | Explicit sample label case marker detected. |
| Colorectal cancer | Case | GSM4196539 | Colorectal cancer lymph node no3 | Lymph node Disease state: Stage III | Case marker detected. |
| Colorectal cancer | Case | GSM4196540 | Colorectal cancer lymph node no4 | Lymph node Disease state: Stage III | Case marker detected. |
| Tumor sample | Case | GSM4196543 | Colorectal cancer primary tumor no2 | Primary tumor Disease state: Stage III | Explicit sample label case marker detected. |
| Tumor sample | Case | GSM4196544 | Colorectal cancer primary tumor no3 | Primary tumor Disease state: Stage III | Explicit sample label case marker detected. |
| Control | Control | GSM4196534 | Control lymph node no1 UC | Lymph node Disease state: Ulcerative colitis | Sample-local control marker detected. |
| Control | Control | GSM4196535 | Control lymph node no2 | Lymph node Disease state: Lipoma | Sample-local control marker detected. |
| Control | Control | GSM4196536 | Control lymph node no2_2 | Lymph node Disease state: Lipoma | Sample-local control marker detected. |
| Normal tissue | Control | GSM4196538 | Normal colon no1 | Normal colon Disease state: Normal colon | Sample-local control marker detected. |
| Control | Control | GSM4196541 | Control lymph node no3 | Lymph node Disease state: Ulcerative colitis | Sample-local control marker detected. |
| Control | Control | GSM4196542 | Control lymph node no4 | Lymph node Disease state: Crohn's disease | Sample-local control marker detected. |
| Normal tissue | Control | GSM4196545 | Normal colon no2 | Normal colon Disease state: Normal colon | Sample-local control marker detected. |
| Normal tissue | Control | GSM4196546 | Normal colon no3 | Normal colon Disease state: Normal colon | Sample-local control marker detected. |
Carry Siftome's disease, organism, specimen, assay, data type, and accession into a validation project. Uncertain fields remain Unknown.