Fosrolapitant Combined With Palonosetron to Prevent Trastuzumab Rezetecan Related CINV

NCT07726433 | Recruiting Phase 2

• 1 other identifier: CINV-2026-001
• Study Type: interventional
• Target: 56
• Locations: 1 country
• Sites: 1

Brief Summary

This study is a prospective, single-arm, multicenter, exploratory clinical trial divided into a screening phase, a treatment phase, and a follow-up phase. The study aims to evaluate the efficacy and safety of foslorapitant palonosetron for injection in preventing nausea and vomiting caused by treatment with recanituzumab. All patients who meet the inclusion criteria and do not meet any exclusion criteria are eligible for enrollment in this study and are scheduled to receive targeted therapy, antiemetic treatment, and follow-up. Dosage Regimen Eligible subjects will receive a prophylactic antiemetic regimen consisting of foslorapitant and palonosetron. The dosage regimen is as follows: Day 1 (D1): Foslorapitant and palonosetron (218 mg foslorapitant and 0.25 mg palonosetron hydrochloride), administered intravenously (IV) 1 hour prior to chemotherapy. Observe for two treatment cycles (C1-C2); Starting from the first dose, record the patient's daily vomiting frequency, severity of nausea, and medication adherence.

Conditions

Chemotherapy-Induced Nausea and Vomiting (CINV)

Outcome Measures

Primary Outcomes (1)

• Overall Complete Response (CR) Rate

  The proportion of participants without any vomiting episodes and without receiving rescue antiemetic medication during the overall 0-120 hour period after trastuzumab rezetecan infusion.

  0 to 120 hours after trastuzumab rezetecan infusion within Cycle 1 and Cycle 2 (each treatment cycle is 21 days)

Secondary Outcomes (8)

• Complete Response (CR) Rate in Acute Phase (0-24 h)

  0 to 24 hours after trastuzumab rezetecan infusion within Cycle 1 and Cycle 2 (each treatment cycle is 21 days)

• Complete Response (CR) Rate in Delayed Phase (24-120 h)

  24 to 120 hours after trastuzumab rezetecan infusion within Cycle 1 and Cycle 2 (each treatment cycle is 21 days)

• Complete Response (CR) Rate in Very Delayed Phase (120-168 h)

  120 to 168 hours after trastuzumab rezetecan infusion within Cycle 1 and Cycle 2 (each treatment cycle is 21 days)

• Complete Protection (CP) Rate

  0 to 168 hours after trastuzumab rezetecan infusion within Cycle 1 and Cycle 2 (each treatment cycle is 21 days)

• Complete Control (TC) Rate

  0 to 168 hours after trastuzumab rezetecan infusion within Cycle 1 and Cycle 2 (each treatment cycle is 21 days)

Study Arms (1)

Antiemetic Prophylaxis

EXPERIMENTAL

All subjects who meet the inclusion criteria will receive prophylactic antiemetic treatment with Fosrolapitant and Palonosetron Hydrochloride to receiving an infusion of Trastuzumab Rezetecan. During follow-up, investigators will collect data on nausea, vomiting, use of rescue medication, and adverse events to evaluate the efficacy and safety of this hormone-free antiemetic regimen.

Drug: Fosrolapitant and Palonosetron Hydrochloride for Injection

Interventions

Fosrolapitant and Palonosetron Hydrochloride for Injection DRUG

D1: Fosrolapitant and Palonosetron Hydrochloride for Injection (218 mg of pholorapitant and 0.25 mg of palonosetron hydrochloride), IV, administered 1 hour before chemotherapy. Observe for two treatment cycles (C1-C2); Starting from the first dose, record the patient's daily vomiting frequency, severity of nausea, and medication adherence.

Antiemetic Prophylaxis

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Sign a written informed consent form and voluntarily enroll in this study;
• Be at least 18 years of age; gender is not a restriction;
• Be a patient scheduled to receive treatment with Trastuzumab Rezetecan;
• Have an ECOG performance status score of 0-2;
• No ascites or pleural effusion requiring drainage;
• No gastrointestinal obstruction, such as pyloric stenosis or intestinal obstruction;
• Expected survival of ≥12 weeks;
• Good organ and bone marrow function, defined as follows:
• Hematologic System (No blood transfusions or treatment with hematopoietic growth factors within the past 14 days)
• Absolute Neutrophil Count (ANC) ≥ 1.5×10⁹/L
• Platelets (PLT) ≥ 100×10⁹/L
• Hemoglobin (Hb) ≥ 90 g/L Liver Function
• Total Bilirubin (TBIL) ≤ 1.5×ULN (For patients with Gilbert's syndrome: ≤ 3×ULN)
• Alanine Aminotransferase (ALT) ≤ 2.5×ULN (Patients with liver metastases: ≤ 5×ULN)
• Aspartate Aminotransferase (AST) ≤ 2.5×ULN (Patients with liver metastases: ≤ 5×ULN)

You may not qualify if:

• Allergy to the study drug or its excipients;
• Known contraindications to NK-1 receptor antagonists, 5-HT3 receptor antagonists, or dexamethasone;
• Nausea or vomiting at the time of enrollment requiring treatment with antiemetics;
• Use of medications with antiemetic effects within 2 days prior to the first dose;
• Initiation of potent opioid analgesics within 48 hours prior to enrollment (adjustment of the dose of medications already in use is permitted);
• Presence of conditions affecting the assessment of vomiting, such as gastrointestinal obstruction, gastroparesis, or intestinal obstruction;
• Patients who are difficult to enroll due to clinically diagnosed psychiatric disorders;
• Localized or active systemic infections requiring treatment;
• Pregnant or breastfeeding women, as well as patients of childbearing age who refuse to use appropriate contraceptive measures during the course of this trial;
• Patients who have participated in other clinical trials within 30 days prior to the first dose of the study drug (patients who failed screening for other clinical trials may be enrolled in this study);
• Patients with other factors deemed by the investigator to be unsuitable for participation in this study, such as any physiological or psychological conditions that may increase study risks, affect patient adherence to the protocol, or interfere with the patient's ability to complete the trial.

Sponsors & Collaborators

• Tianjin Medical University Cancer Institute and Hospital: lead

Study Sites (1)

Tianjin Cancer Hospital Airport Hospital

Tianjin, China

RECRUITING

MeSH Terms

Conditions

Vomiting

Interventions

Palonosetron; Injections

Condition Hierarchy (Ancestors)

Signs and Symptoms, Digestive; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Quinuclidines; Heterocyclic Compounds, Bridged-Ring; Heterocyclic Compounds; Isoquinolines; Heterocyclic Compounds, 2-Ring; Heterocyclic Compounds, Fused-Ring; Drug Administration Routes; Drug Therapy; Therapeutics

Central Study Contacts

Zhansheng Jiang Tianjin Cancer Hospital Airport Hospital

CONTACT

022-23340123; zhjiang@tmu.edu.cn

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 20, 2026
• First Posted: July 24, 2026
• Study Start: June 15, 2026
• Primary Completion (Estimated): June 1, 2028
• Study Completion (Estimated): June 1, 2028
• Last Updated: July 24, 2026

Record last verified: 2026-07

Locations

CN (1)