[Experience feedback committees (CREX) and beyond…].

Since the late 2,000 years, under the incentive of the French agencies ANAP (previously MEAH) and HAS and following the decision DC-0103 of the ASN, experience feedback committees (known as 'Comité de retour d'expérience or Crex' in French) have widely been implemented within radiation oncology departments in France. Based on the declaration of error/near misses (precursor events) occurring during medical care to patients, an intuitive method of systematic analysis of these events is basically the aim of such committees (such as the Orion method(©) derived from the air transportation industry). Our article aims at summarizing the paths and pitfalls attached to this methodology, emphasizing what could be the next step, beyond the 'Crex' committees, in the long march to know how to secure care to patients within a radiotherapy medical team.