Overview European Sickle Cell Disease Cohort - Hydroxyurea Status: Completed Trial end date: 2019-03-20 Target enrollment: Participant gender: Summary In the context of the Risk Management Plan (RMP), as requested from Addmedica by the EMEA, to collect information about long-term safety of SiklosĀ® (hydroxycarbamide) when used in patients with Sickle Cell Disease. Details Lead Sponsor: ADDMEDICA SASATreatments: Hydroxyurea