MAP-guided Preemptive Therapy of aGvHD by Ruxolitinib

Exclusion Criteria

• •Patients who develop acute GVHD prior to start of study drug
• •Patients at very high risk for relapse post HCT as defined by very high disease risk index
• •Patients participating in a clinical trial where prevention of GVHD is the primary endpoint
• •Uncontrolled active infection (i.e., progressive symptoms related to infection despite treatment or persistently positive microbiological cultures despite treatment or any other evidence of severe sepsis)
• •Patients who are pregnant
• •Patients on dialysis within 7 days of enrollment
• •Patients requiring ventilator support or oxygen supplementation exceeding 40% FiO2 within 14 days of enrollment.
• •Patients receiving investigational agent within 30 days of enrollment. However, the Principal Investigator (PI) may approve prior use of an investigational agent if the agent is not expected to interfere with the safety or the efficacy of ruxolitinib