Infectious complications associated with interleukin-2 administration: a retrospective review of 935 treatment courses.

Abstract
PURPOSETo determine if interleukin-2 (IL-2)-treated patients are prone to develop clinically significant infections, a retrospective review of 519 patients who received 935 treatment courses over a 38-month period was conducted.MATERIALS AND METHODSTreatment records of patients receiving intravenous (IV) bolus IL-2 were reviewed. Clinically significant infectious episodes were identified by retrieving data on antibiotic usage and cross-referencing this with microbiology records and chart review.RESULTSOne hundred thirty-nine documented infectious episodes occurred in 122 treatment courses (13.0%); 11 courses were associated with more than one episode of infection. Predominantly urinary tract infections (6.8%) and infections related to IV catheters (5.3%) were encountered. Fifty-eight percent of the catheter-related infections were associated with bacteremia. Other infections included respiratory tract infections (1.0%), skin/muscle infections (0.9%), and miscellaneous infections (0.9%). Bacteria were isol...

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