Differential impact of fosaprepitant on infusion site adverse events between cisplatin- and anthracycline-based chemotherapy regimens.

BACKGROUND: Fosaprepitant may be associated with infusion site adverse events (AEs), and these adverse events possibly vary according to chemotherapy regimen. PATIENTS AND METHODS: 267 oncology patients who were administered anthracycline- or cisplatin-based regimens were retrospectively studied. Multivariate logistic regression was performed in stratified analyses to evaluate potential regimen-specific effects of fosaprepitant. RESULTS: 41.7% of patients administered fosaprepitant experienced infusion site AEs. On the other hand, only 10.9% of patients administered aprepitant experienced AEs. Multivariate analysis showed a statistically significant overall increased risk of infusion site reaction associated with fosaprepitant (p<0.001), but when evaluated separately according to chemotherapy regimen, this relationship appeared to be largely confined to patients receiving an anthracycline-based regimen (OR=12.95, 95%CI=5.74-29.20). No association was observed among patients on cisplatin-based regimens. A test for interaction was statistically significant (p=0.001). CONCLUSION: Fosaprepitant is associated with an elevated risk of infusion site reaction in patients receiving anthracyclines.