Comprehensive characterization of transposable element expression reveals regulatory circuitry and clinical implications in cancers.

Expression profiles of nearly 96,000 transposable elements across 980 subfamilies were mapped in approximately 10,000 cancer samples, revealing extensive regulatory networks.

• Why it matters: Understanding TE expression at single-element resolution fills a critical knowledge gap, as TEs are abundant in the human genome and linked to cancer regulation and clinical outcomes.
• What they did: The study integrated multiomics data from around 10,000 samples and 1,000 cancer cell lines to create an expression atlas, identify TE-associated regulatory factors, and analyze TE alterations in tumors.
• The result: The resource enables exploration of TE expression, regulatory networks, and clinical relevance, supporting insights into cancer biology and potential therapeutic responses.