ASTEROID: A Trial of ASTX660 in Combination With Pembrolizumab — StellaPhase 1 — Early testing in a small group of people (usually 20–80) to evaluate safety, determine safe dosage, and identify side effects.
Trial locations(3 sites)
United Kingdom
Cambridge University Hospitals NHS Trust, Cambridge The Royal Marden NHS Foundation Trust - Drug Development Unit, Sutton The Royal Marsden NHS Foundation Trust - Breast Unit, Sutton Age range
18 Years and older
Last updated February 2026