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Παρασκευή 7 Ιουλίου 2017

A Phase II Trial Evaluating the Safety of Rapid Infusion of Ofatumumab in Patients with Previously Treated Chronic Lymphocytic Leukemia

AbstractLessons Learned. Ofatumumab infusion reactions can be diminished by escalating the dose rate in individual patients in sequential infusions.Background.Ofatumumab (OFA) is a fully humanized, anti‐CD20 antibody approved for use in chronic lymphocytic leukemia (CLL). The recommended administration requires long infusion times. We evaluated an accelerated infusion regimen of 2 hours.Methods.The first dose of OFA (300 mg) was given on week 1 day 1 starting at 3.6 mg/hour and doubling every 30 minutes until a rate of 240 mg/hour was reached. If tolerated, the second dose (1,000 mg) was given on week 1 day 3 starting at 50 mg/hour and doubling every 30 minutes until a rate of 800 mg/hour was reached. If tolerated, the third dose (2,000 mg) was given on week 2 day 1 at 800 mg/hour over the first 30 minutes and, if tolerated, at 1,068 mg/hour over the next 90 minutes (goal infusion time: 120 minutes). Subsequent OFA infusions were administered weekly in the same manner for 8 weeks, and then monthly for 4 months.Results.Thirty‐four patients were treated. Most infusion‐related reactions occurred during the first and second infusion. Eighty‐seven percent (87%) of patients finished the third infusion within 15 minutes of the planned 2 hours and only one had an infusion reaction.Conclusion.Using this stepped‐up dosing regimen, a rapid infusion of OFA is safe and well tolerated.

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