Safety of antiemetic prophylaxis with HTX-019 as a 30-min infusion in patients with cancer: a retrospective study

Aim: The NK-1 receptor antagonist HTX-019 (CINVANTI^® [aprepitant injectable emulsion]) was approved for preventing chemotherapy-induced nausea and vomiting based on bioequivalence studies in healthy volunteers. The objective of this study was to evaluate HTX-019 safety in cancer patients. Patients & methods: This retrospective analysis evaluated the safety of HTX-019 130 mg 30-min intravenous infusion, as part of a three-drug antiemetic regimen. Results: No treatment-emergent adverse events (TEAEs) were deemed related to HTX-019. During treatment cycles, three of 100 patients developed five reversible TEAEs: dyspnea, hot flash, pain, nausea and visual disturbance. Between cycles, six patients had TEAEs of dizziness (three patients), infusion-site events (two patients) and headache (two patients). Conclusion: HTX-019 is safe in cancer patients receiving chemotherapy.

Safety profile of HTX-019 administered as an intravenous push in cancer patients: a retrospective review

Objectives: HTX-019 (Cinvanti®) is a novel injectable emulsion formulation of the neurokinin 1 receptor antagonist (RA) aprepitant, approved (as 30-min infusion and 2-min injection) for preventing acute and delayed chemotherapy-induced nausea and vomiting (CINV). This retrospective analysis evaluated the safety of HTX-019 administered by 2-min injection in patients with cancer.Methods: At a single center, HTX-019 was evaluated as a 2-min injection within a guideline-recommended three-drug regimen for CINV prophylaxis in patients receiving highly (HEC) or moderately emetogenic chemotherapy (MEC). Treatment-emergent adverse events (TEAEs) were assessed 0-60 minutes following initiation of HTX-019 administration, focusing on infusion-site adverse events and hypersensitivity reactions.Results: Among 600 patients (78 MEC, 522 HEC), the most common diagnoses were lung (172) and breast (129) cancer. Patients received a 2-min injection of HTX-019, followed by a 5-hydroxytryptamine type 3 RA intravenously (IV) (palonosetron or ondansetron), dexamethasone IV, and chemotherapy regimen (most common was cisplatin-containing) via a central (76%) and peripheral line (24%). No TEAEs occurred within 60 min after start of HTX-019 administration.Conclusion: HTX-019 administered by 2-min injection has a tolerable safety profile in patients with cancer, representing a viable method of HTX-019 administration for CINV prevention.

Crossover safety study of aprepitant: 2-min injection vs 30-min infusion in cancer patients receiving emetogenic chemotherapy

Introduction: HTX-019 (CINVANTI^®) is a novel injectable emulsion formulation of the neurokinin 1 receptor antagonist (RA) aprepitant, approved for preventing acute and delayed chemotherapy-induced nausea and vomiting (CINV). HTX-019 has demonstrated a tolerable safety profile when administered via 30-min intravenous (IV) infusion and 2-min IV injection in healthy volunteers. This prospective study evaluated the safety of HTX-019 administered via 30-min IV infusion and 2-min injection (IV push) in patients with cancer. Materials and methods: This prospective single-center, randomized, safety, 2-sequence, 2-period, crossover study evaluated HTX-019 130 mg within a guideline-recommended 3-drug regimen for CINV prophylaxis in patients receiving highly (HEC) or moderately emetogenic chemotherapy (MEC). Treatment-emergent adverse events (TEAEs) were assessed at 0-30 (primary endpoint), 30-60, and >60 mins (chemotherapy administration period) following the initiation of the HTX-019 administration, focusing on infusion-site adverse events and hypersensitivity reactions (dyspnea, anaphylaxis). Results: Among 135 patients (35 MEC, 100 HEC), the most common diagnoses were ovarian (32), lung (17), endometrial (17), and colorectal (15) cancer. Patients were randomized 1:1 to a 2-min injection and a 30-min infusion of HTX-019 (sequence AB or BA), followed by a 5-hydroxytryptamine type 3 RA IV (palonosetron 0.25 mg for 30 s or ondansetron 8-16 mg for 5-10 mins), dexamethasone IV (8-12 mg for 15 mins), and the chemotherapy regimen. Both administration methods were generally well tolerated. No TEAEs occurred within 30 mins after start of HTX-019 administration. All TEAEs occurred during chemotherapy administration; 2 patients experienced 2 TEAEs following injection, and 5 experienced 8 TEAEs following infusion. Three adverse events following infusion (2 dyspnea, 1 throat closing) were considered serious. No TEAEs were considered related to HTX-019. Conclusion: Short injection of HTX-019 has a tolerable safety profile in patients with cancer, and represents an alternative method of HTX-019 administration for CINV prevention.

Safety Profile of HTX-019 Administered as an Intravenous Push in Cancer Patients: A Retrospective Review

INTRODUCTION

HTX-019 [CINVANTI® (aprepitant injectable emulsion)] is a neurokinin 1 receptor antagonist (NK-1 RA) approved as a 30-min infusion for preventing acute and delayed chemotherapy-induced nausea and vomiting. HTX-019 has been generally well tolerated when administered as a 30-min infusion or 2-min injection [intravenous (IV) push] in healthy subjects. This real-world analysis assesses safety of HTX-019 via IV push in patients with cancer and addresses a recent IV bag shortage.

METHODS

This retrospective review involved six sites in Alabama, USA. Analyzed patients were 18-94 years old with an Eastern Cooperative Oncology Group performance status ranging from 0 to 4. Seventy-six chemotherapy regimens were utilized (emetogenicity high, n = 35; moderate, n = 35; low, n = 6) and patients received HTX-019 130 mg only or switched from fosaprepitant 150 mg to HTX-019 130 mg within a three-drug antiemetic regimen with a 5-hydroxytryptamine type 3 RA and dexamethasone. HTX-019 was administered via IV push. Electronic medical records of patients receiving HTX-019 were queried for nursing and medical documentation associated with infusion-site adverse events (ISAEs). The detailed notes were also reviewed for any discontinuation of HTX-019 or substitution of HTX-019 with another NK-1 RA.

RESULTS

The HTX-019 safety profile was analyzed on the basis of 2066 IV push administrations in 591 cancer patients (most common diagnoses: lung, n = 107; breast, n = 100; colon, n = 92). No clinically significant ISAEs or adverse events associated with HTX-019 were reported. Also, no patients discontinued HTX-019 treatment, and none switched from HTX-019 to another NK-1 RA.

CONCLUSION

This is the first study to demonstrate that HTX-019 can be safely administered via IV push in patients with cancer receiving emetogenic chemotherapy while negating the need for fluid bags, which are scarce.

FUNDING

Heron Therapeutics, Inc., San Diego, CA, USA. Plain language summary available for this article.

HTX-019: polysorbate 80- and synthetic surfactant-free neurokinin 1 receptor antagonist for chemotherapy-induced nausea and vomiting prophylaxis

Chemotherapy-induced nausea and vomiting (CINV) may occur during the acute (0-24 h) or delayed (25-120 h) phase following chemotherapy administration. The addition of a neurokinin 1 receptor antagonist to antiemetic regimens containing a 5-hydroxytryptamine type 3 receptor antagonist and dexamethasone has resulted in improved CINV prophylaxis. Due to numerous adverse events and hypersensitivity reactions associated with fosaprepitant, a commonly used neurokinin 1 receptor antagonist, there remains an unmet need for better-tolerated formulations. HTX-019, the US FDA-approved polysorbate 80- and synthetic surfactant-free aprepitant injectable emulsion, is bioequivalent to and better tolerated (fewer treatment-emergent adverse events) than fosaprepitant. HTX-019 represents a valuable alternative to fosaprepitant for CINV prophylaxis.