Table 3.

Summary of retrospective studies describing combining JAK inhibitors in HCT protocols

Reference# PatientsStudy DesignResultsConclusions
38 100 Retrospective No adverse impact on early outcomes of HCT Continuing JAK inhibitor therapy near to start of conditioning therapy is associated with very low risk of withdrawal symptoms 
HCT was delayed in 2 patients due to significant clinical events following JAK 1/2 inhibitor discontinuation: 1 patient developed pulmonary infiltrates and rebound splenomegaly, a second patient experienced fever and hypoxic respiratory failure 
47 22 Retrospective 1-y OS of 100% in patients with
a good response to ruxolitinib vs
60% in others 
Continuing ruxolitinib until conditioning without tapering resulted in no unexpected SAEs 
36 14 Retrospective Engraftment in 13 patients (93%);
graft fibrosis (n = 1) and treatment-related sepsis (n = 1) 
Tapering ruxolitinib until conditioning did not result in unexpected SAEs 
48 11 Retrospective Good engraftment rates Differing schedules of ruxolitinib tapering associated with high engraftment rates 
Reference# PatientsStudy DesignResultsConclusions
38 100 Retrospective No adverse impact on early outcomes of HCT Continuing JAK inhibitor therapy near to start of conditioning therapy is associated with very low risk of withdrawal symptoms 
HCT was delayed in 2 patients due to significant clinical events following JAK 1/2 inhibitor discontinuation: 1 patient developed pulmonary infiltrates and rebound splenomegaly, a second patient experienced fever and hypoxic respiratory failure 
47 22 Retrospective 1-y OS of 100% in patients with
a good response to ruxolitinib vs
60% in others 
Continuing ruxolitinib until conditioning without tapering resulted in no unexpected SAEs 
36 14 Retrospective Engraftment in 13 patients (93%);
graft fibrosis (n = 1) and treatment-related sepsis (n = 1) 
Tapering ruxolitinib until conditioning did not result in unexpected SAEs 
48 11 Retrospective Good engraftment rates Differing schedules of ruxolitinib tapering associated with high engraftment rates 
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