Radiotherapy causes cardiac tissue toxicity (IMAGE) Rockefeller University Press Caption Six months after radiotherapy, activation of the cGAS–STING inflammatory signaling pathway leads to an accumulation of fibrotic scarring (blue) in the heart muscle of mice, ultimately leading to reduced cardiac function and heart failure. Credit © 2022 Shamseddine et al. Originally published in Journal of Experimental Medicine. https://doi.org/10.1084/jem.20220809 Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.