# Rb-driven transcription limits tumor suppression in breast cancer

Researchers found that the retinoblastoma (Rb) protein's role in driving transcription actually undermines its tumor-suppressive effects in breast cancer. This trade-off reveals a previously unknown aspect of Rb function that may influence treatment strategies targeting the Rb pathway.

**Importance:** 3/5

## Sources

### Science
- [Nature](https://www.nature.com/articles/s41586-026-10886-w) — 2026-08-12