Xilio plans to file INDs for its two lead candidates this year. (PDPics/Pixabay)
Xilio Therapeutics has raised $95 million to take IL-2 and CTLA-4 immunotherapies into clinical trials. The series C positions Xilio to provide early clinical validation of anti-cancer agents that are designed to remain inactive until they reach tumors.
Immuno-oncology drugs are typically given systemically, causing them to trigger immune responses that affect healthy and cancerous tissues alike. The resulting adverse events are unpleasant and can prevent physicians from administering the most efficacious dose. Patients suffer from both the side effects and worse outcomes due to the use of suboptimal doses.