**Problem:** Heart cells that are lost (e.g. due to heart attack). **Tenaya Solution:** Regenerate new heart cells in vivo by using viral vectors to deliver proprietary combinations of genes. [[Tenaya Deep Dive]] Cellular Regeneration platform uses viral vectors to deliver genes to specific cells in the heart to regenerate cardiomyocytes in vivo. The product candidates arising from this platform are intended to overcome the shortcomings of traditional therapies that are not able to address the loss of cardiomyocytes. We believe this platform has the potential for broad utility across a range of heart conditions that result in the loss of cardiomyocytes, including myocardial infarction, chemotherapy-related toxicity, and viral infection.