{"description":"Regimen related toxicity (RRT) is a concern, but because of the seriousness of relapsed JMML, a high incidence of grade III and IV RRT will be considered acceptable. No other adverse events were collected.","eventGroups":[{"description":"Patients receive administration of high dose cytosine arabinoside and mitoxantrone followed by hematopoietic cell transplant.","id":"EG000","otherNumAffected":0,"otherNumAtRisk":1,"seriousNumAffected":1,"seriousNumAtRisk":1,"title":"Cytarabine + Mitoxantrone"}],"frequencyThreshold":"5","seriousEvents":[{"assessmentType":"NON_SYSTEMATIC_ASSESSMENT","organSystem":"General disorders","sourceVocabulary":"CTCAE (2.0)","stats":[{"groupId":"EG000","numAffected":1,"numAtRisk":1,"numEvents":1}],"term":"Death"}],"timeFrame":"Up to 30 days post study treatment."}