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Clinical Trial Summary

The study team proposes a randomized, double-blind, RCT to address the following goal: to determine the relative efficacy and adverse event profile of fosaprepitant compared to the standard of care antiemetic ondansetron. Fosaprepitant and its active metabolite aprepitant are a relatively new class of antiemetic that exclusively acts in the central nervous system by blocking neurokinin (NK-1) which is a key signaling molecule in the centrally mediated aspects of the vomiting reflex. Currently, fosaprepitant and aprepitant both have only two United Stated Food and Drug Administration (USFDA) approved indications for nausea and vomiting: chemotherapy-induced and postoperative. Neurokinin inhibitors are highly effective and generally well-tolerated. Therefore, this class of medication may be a more appropriate medication for the millions of patients with nausea and vomiting that seek care in EDs. Intravenous fosaprepitant is converted to the active metabolite aprepitant on the order of minutes and is significantly cheaper to procure at this time. The outcome for the efficacy analysis will be no need for additional medication to treat nausea and vomiting within 2 hours of investigational medication administration. The primary outcome for the tolerability analysis will be the development of any new symptom within 2 hours of medication administration.


Clinical Trial Description

Nausea and vomiting (NV) are common and interrelated conditions. Approximately 50% of adults experience nausea in a given year while 30% of adults experience vomiting over the same period. Of this population of symptomatic individuals with NV, 25% of patients seek care in any healthcare delivery setting. Health Care Utilization Project (HCUP) data indicates that nearly 9.0 million patients seek care for NV in emergency departments (EDs) each year in the United States. Antiemetics are used to treat NV. Antiemetics currently utilized in the emergency department setting for NV do not always work on the first dose and have a plethora of side effects because of their peripheral mechanism of action outside of the vomiting reflex pathway in the central nervous system. These medications include ondansetron, promethazine, metoclopramide, olanzapine, haloperidol. Chief among these side effects is alteration of an aspect cardiac electrical signaling called the QT segment which represents the duration of ventricular contraction and relaxation. The QT segment is prolonged with commonly used antiemetics which can often be a prelude to cardiac dysrhythmias that are associated with mortality. As a result, patients with NV often have long length-of-stay (LOS) involving supportive care with intravenous fluids or empiric treatment with medications that can potentiate development of cardiac dysrhythmias. This is a problem in busy emergency departments (EDs) struggling to accelerate patient throughput in order to appropriately keep up with patient volume in an under-supplied hospital bed environment nationally. Fosaprepitant and its active metabolite aprepitant are a relatively new class of antiemetic that exclusively acts in the central nervous system by blocking neurokinin (NK-1) which is a key signaling molecule in the centrally mediated aspects of the vomiting reflex. Currently, fosaprepitant and aprepitant both have only two United Stated Food and Drug Administration (USFDA) approved indications for nausea and vomiting: chemotherapy-induced and postoperative. Neurokinin inhibitors are highly effective and generally well-tolerated. Therefore, this class of medication may be a more appropriate medication for the millions of patients with nausea and vomiting that seek care in EDs. Intravenous fosaprepitant is converted to the active metabolite aprepitant on the order of minutes and is significantly cheaper to procure at this time. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT06382012
Study type Interventional
Source Montefiore Medical Center
Contact Mustfa K Manzur, MD MPH MS
Phone 718-920-6626
Email mmanzur@montefiore.org
Status Not yet recruiting
Phase Phase 2/Phase 3
Start date June 2024
Completion date December 2024

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