Rubitecan (INN, marketing name Orathecin) is an oral topoisomerase inhibitor, developed by Supergen.
On January 2005, Supergen withdrew the NDA for rubitecan, based on feedback indicating that the current data package would not be sufficient to gain US approval, and on January 2006, the Marketing Authorization Application (MAA) filed with the European Medicines Agency (EMA) was also withdrawn.