PEG-asparaginase is used as a treatment for Philadelphia-negative acute lymphoblastic leukemia. In pediatric studies, triglycerides (TGs) were affected more by PEG-asparaginase than by native L-asparaginase (10.0% vs. 5.5%). We conducted a retrospective study to determine the safety of re-challenging adult patients with PEG-asparaginase after experiencing an episode of severe hypertriglyceridemia (>1000 mg/dl or 11.4 mmol/L). The incidence of hypertriglyceridemia associated with PEG-asparaginase in adult patients was high (67.5%). Therefore, checking TGs at baseline and monitoring levels while receiving PEG-asparaginase need to be considered and studied in prospective studies. However, in patients with hypertriglyceridemia not complicated by acute pancreatitis, re-challenging is safe once TG levels normalize.
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