However, in our study, we observed AKI and anuria with no responseto TPE, which showed previously in case of combined mutation [13,27]. Contrary to ourfindings [28], recently published data derived from The Global aHUS Registry shows thataHUS patients with initial presentation in childhood are more likely to have MCP or CFImutation. Similar to others [7], we also could not identify a potential precipitating factorin adult patients; in the case of an affected child, diarrhea could be considered as such acondition [20].