Effect of prophylactic leukapheresis on early mortality and overall survival in acute leukemia patients with hyperleukocytosis.

Hyperleukocytosis has been associated with early mortality owing to the presence of complications including leukostasis, tumor lysis syndrome (TLS), and disseminated intravascular coagulation (DIC). Leukapheresis is a fast and effective cytoreductive procedure that removes leukocytes from the peripheral circulation. This single-center, retrospective, and observational study included 32 patients diagnosed with acute leukemia who underwent leukapheresis due to hyperleukocytosis between 2014 and 2020. This study primarily aimed to investigate the effect of prophylactic leukapheresis on early mortality and overall survival (OS). In the symptomatic group, seven and two patients died in the first and second weeks, respectively. In the prophylactic leukapheresis group, two and one patients died in the first and second weeks (p = 0.792), respectively. OS was significantly longer in the prophylactic leukapheresis group (p = 0.004). The leukapheresis procedure appears to be effective on early mortality and OS. Initiation of prophylactic leukapheresis before the appearance of leukostasis symptoms is effective on OS and possibly early mortality.