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Grade 1 oral mucositis is defined as asymptomatic or mild symptoms; intervention not indicated. Grade 2 oral mucositis is defined as moderate pain or ulcer that does not interfere with oral intake; modified diet indicated. Grade 3 oral mucositis is defined as severe pain; interfering with oral intake. Grade 4 oral mucositis is defined as life-threatening consequences; urgent intervention indicated. Grade 5 oral mucositis is defined as death.","dispersionType":"Standard Deviation","groups":[{"description":"Patients will receive six doses of Uproleselan intravenously. The doses will begin the evening of Day -3 and continue every 12 hours through the morning of Day 0, prior to hematopoietic stem cell transplant (auto-HCT). On the evening of Day -2, patients also receive one dose of standard of care Melphalan intravenously.","id":"OG000","title":"Uproleselan + Standard of Care Melphalan"},{"description":"Patients will receive six doses of placebo intravenously. The doses will begin the evening of Day -3 and continue every 12 hours through the morning of Day 0, prior to hematopoietic stem cell transplant (auto-HCT). On the evening of Day -2, patients also receive one dose of standard of care Melphalan intravenously.","id":"OG001","title":"Placebo + Standard of Care Melphalan"}],"paramType":"MEAN","populationDescription":"The number of participants analyzed at each time point may differ from the overall number of participants analyzed because the data was not collected. One patient in the placebo + standard of care melphalan arm was not evaluable for the outcome measure.","reportingStatus":"POSTED","timeFrame":"From day -3 to date of discharge or day 14 (whichever is sooner) (up to be 18 days)","title":"Change in Oral Mucositis as Assessed Per CTCAE v5.0","type":"SECONDARY","unitOfMeasure":"CTCAE grade"}