[Adjuvant trastuzumab can be infused safely over 30 minutes].

UNLABELLED: It has been thought that there is a possibility that infusion speed generally affects the manifested frequency of infusion reaction and its strength. The infusion prescription time of trastuzumab should be over 90 minutes according to the package insert. In the infusion US, is possible over 30 minutes after the second time. We sought to evaluate the safety and tolerability of trastuzumab administered as a 30-minute infusion. PATIENTS: Eighteen patients of HER2-positive breast cancer were treated, and their age ranged from 37 to 65 years old(median, 54 years old). METHOD: PATIENTS were infused with 8 mg/kg of trastuzumab over 90 minutes and, if tolerated, all subsequent maintenance doses of 6 mg/kg are over 30 minutes. RESULT: The infusion times for 30 minutes were twice to 17 times(16 times the median). Mild infusion reactions were seen in 2 cases at the time of the initial prescription, but the infusion reaction was not judged from the prescription for 30 minutes. Mild eczema was admitted by 3 cases after prescription. No decline in cardiac function was seen. CONCLUSION: Our data strongly suggest that trastuzumab can be safely infused over 30 minutes for 6 mg/kg maintenance doses. However, it is thought that the number of cases will increase in future, and confirmation is necessary.