> For the complete documentation index, see [llms.txt](https://docs.owkin.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.owkin.com/what-you-can-do-with-k-pro/overview-1/visualisation-capabilities-1.md).
# Rank candidate targets
**What to do:** Compare a candidate gene's expression across cancer types to identify indications where it's overexpressed. Specify "compared to matched normal tissue" for more meaningful results.
**Example prompt:**
> Compare the expression of NECTIN4 across all TCGA cancer types. Show me a pan-cancer overview ranked by median expression level, and highlight which indications show overexpression compared to matched normal tissue.
**Expected result:** A ranked table or visualization of NECTIN4 expression across TCGA indications, with tumor vs. normal comparisons.
**Follow-up:**
> For the top 3 indications with highest NECTIN4 overexpression, show me the correlation between NECTIN4 expression and overall survival.
[**A-S-R-T-C breakdown**](https://docs.owkin.com/getting-started/prompting-guide-and-prompt-library)**:** Compare \[A] NECTIN4 \[S] at Bulk RNA level \[R] as a ranked table \[T] across all TCGA cancer types vs. matched normal tissue \[C].
---
# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://docs.owkin.com/what-you-can-do-with-k-pro/overview-1/visualisation-capabilities-1.md?ask=&goal=
```
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