Efficacy of the oral neurokinin‐1 receptor antagonist aprepitant for nausea and vomiting induced by cisplatin and carboplatin in Japanese patients with gynecological cancer

2017 
Aim This study was conducted to evaluate the efficacy and the difference in effects of the oral neurokinin-1(NK-1) receptor antagonist aprepitant for chemotherapy-induced nausea/vomiting (CINV) in Japanese patients with gynecological cancer receiving highly emetogenic (cisplatin) and moderately emetogenic (carboplatin) chemotherapy. Methods Aprepitant was added during the second course of chemotherapy in Japanese patients with grade ≥ 2 (Common Terminology Criteria for Adverse Events, version 3.0) nausea and vomiting during the first course despite receiving antiemetic therapy (a first-generation 5-hydroxytryptamine 3 receptor antagonist + dexamethasone), and in patients who requested stronger antiemetic therapy despite only having grade 1 nausea and vomiting. The incidence of nausea and vomiting was compared between the first and second courses in each group. Results Ninety-six (55.5%) out of 173 patients received add-on therapy with aprepitant. There was a significant increase in the complete response (CR: no vomiting or salvage therapy) rate in the patients receiving aprepitant, with marked improvement being confirmed for delayed CINV. Stratified analysis showed that patients with delayed CINV treated with carboplatin had a significantly higher CR rate, while patients with both acute and delayed CINV treated with cisplatin had significantly higher CR rates. There was a positive correlation between the incidence of nausea and the incidence of vomiting in the patients treated with aprepitant. Conclusion The oral NK-1 receptor antagonist aprepitant could be effective for both acute and delayed CINV with cisplatin and for delayed CINV with carboplatin in Japanese gynecological cancer patients.
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