> For the complete documentation index, see [llms.txt](https://help.bioinsight.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.bioinsight.illumina.com/correlation-engine/querying-and-interpreting-results/biogroups.md).

# Biogroups

**Biogroups** (also called Pathway Enrichment) shows which canonical gene sets — from Gene Ontology, MSigDB, InterPro, and TargetScan — are significantly enriched in your queried bioset or are highly associated with a phenotype or compound.

## What Is a Biogroup?

A **biogroup** is a named collection of genes associated with a specific biological function, pathway, protein family, or regulatory motif. Biogroups carry no numerical values — they are gene lists. CE tests whether the genes in a bioset significantly overlap with each biogroup using rank-based enrichment statistics.

Biogroups in CE come from:

| Source                                                        | Category                                                                                                                 |
| ------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------ |
| [Gene Ontology](http://www.geneontology.org/)                 | Biological processes, cellular components, molecular functions                                                           |
| [MSigDB](http://www.broadinstitute.org/gsea/msigdb/index.jsp) | Canonical pathways, hallmark gene sets, positional sets, regulatory motifs, oncogenic signatures, immunologic signatures |
| [InterPro](http://www.ebi.ac.uk/interpro/)                    | Protein families                                                                                                         |
| [TargetScan](http://www.targetscan.org/)                      | Predicted miRNA targets                                                                                                  |

## What Can You Query?

| Query Input               | What You Get                                                                  |
| ------------------------- | ----------------------------------------------------------------------------- |
| **Bioset**                | Ranked list of biogroups that highly overlap with the bioset                  |
| **Phenotype or compound** | Ranked list of biogroups that overlap with biosets tagged with the query term |

{% hint style="info" %}
Biogroups does not accept a gene or biogroup as a query input. To find which biogroups a gene belongs to, query QuickView and click the **General Info** tab.
{% endhint %}

## How to Query Biogroups

**With a phenotype or compound:**

1. Enter the term in the query field.
2. Click the **Pathway Enrichment icon** ![](https://1165879419-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FWolK2fDgPCCcGurM8A73%2Fuploads%2Fgit-blob-cadedf758605eac7f2f9cc88eecb6cfb254258af%2Fimage%20\(25\).png?alt=media) in the app menu.

**With a bioset:**

1. Find the bioset and click the **mini-QuickView icon** ![](https://1165879419-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FWolK2fDgPCCcGurM8A73%2Fuploads%2Fgit-blob-0a2038f7d8421f594197b4726f532faff61affd8%2Fimage.png?alt=media) next to its name.
2. Click the **Pathway Enrichment icon** ![](https://1165879419-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FWolK2fDgPCCcGurM8A73%2Fuploads%2Fgit-blob-cadedf758605eac7f2f9cc88eecb6cfb254258af%2Fimage%20\(25\).png?alt=media).

## Understanding Biogroups Results

Results are a ranked list of enriched biogroups. Each row shows the biogroup name, source, and enrichment score.

### Drilling into a Biogroup

Click a biogroup name to see supporting studies broken down by organism and data type. Click **View Individual Studies** to see studies containing biosets that overlap with the biogroup and are tagged with your queried phenotype or compound.

Expand a study to see biosets. Click a bioset to see:

* **Venn diagram** — showing the overlap between your queried bioset (or concept-tagged biosets) and the biogroup. The p-value is the probability of the overlap occurring by chance.
* **Feature list** — the genes in the overlap, with their statistics (fold change, p-value, etc.)
* **Directional filter** — use the dropdown to show all genes, only up-regulated, or only down-regulated in the comparison.

## Venn Diagram Interpretation

**If you queried with a bioset:**

* Circle 1: genes in your queried bioset
* Circle 2: genes in the correlated biogroup
* Overlap: genes in both
* p-value: probability of overlap by chance

**If you queried with a phenotype or compound:**

* The diagram shows the overlap between the biogroup and a bioset from a study tagged with your query term.

## Exporting Results

* **Export Results** — downloads a list of all correlated biogroups.
* **Export Data** — from within a specific biogroup, downloads the list of genes common to your bioset and that biogroup.
* **Export Image** — downloads the Venn diagram and associated statistics.

## How Biogroups Differs from Other Enrichment Tools

CE uses directional rank-based enrichment statistics that account for both the direction of regulation (up/down) and the rank of each gene within a bioset. For detailed methodology, see [Kupershmidt et al., 2010, *PLoS ONE*](http://www.plosone.org/article/info:doi/10.1371/journal.pone.0013066).


---

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