16 learned societies of medicine challenge the authorities on a lack of sanctions in the face of the "largest known wild therapeutic trial" The trial was led by Didier Raoult, former boss of the IHU of Marseille. In April, the French Medicines Agency estimated that the use of hydroxychloroquine "exposes patients to potential adverse effects that can be serious" The Marseille prosecutor's office had opened in July 2022 a judicial investigation, after a scathing report from the ANSM.