Condensates of the chromatin regulator ANKRD11 restrict hypertranscribed genes to safeguard development.

ANKRD11 condensates suppress hypertranscribed genes, preventing developmental disorder-related gene overactivation, with loss causing embryonic lethality in mice.

• Why it matters: Understanding how highly transcribed genes are kept in check is crucial for revealing mechanisms underlying developmental disorders like KBG syndrome, where gene regulation fails.
• What they did: A genetic screen identified ANKRD11 as a key regulator that forms biomolecular condensates to sequester elongation factors, thereby restricting transcription of hypertranscribed genes in cells and mouse models.
• The result: Disruption of ANKRD11 condensates leads to overactivation of developmental genes, abnormal organ development, and embryonic death, highlighting a condensate-based safeguard mechanism essential for normal development.