Olanzapine and 5-HT3 With or Without Dexamethasone to Prevent CINV

Xingchen Peng

Status and phase: Completed; Phase 3

Conditions: Chemotherapy-induced Nausea and Vomiting

Treatments: Drug: 5HT3RA+Olanzapine; Drug: 5HT3RA+Olanzapine+Dexamethasone

Study type: Interventional

Funder types: Other

Identifiers

NCT05805800

2023-157

Details and patient eligibility

About

Nausea and vomiting caused by chemotherapy are considered by patients as the main side effects of cancer treatment, which affect the quality of treatment and life.At present, NCCN guidelines have recommended three or four drug regimens for highly emetic chemotherapy (HEC) to prevent vomiting, all containing dexamethasone.However, its side effects such as moderate to severe insomnia, hyperglycemia, dyspepsia, upper abdominal discomfort, irritability, increased appetite, weight gain and acne are gathering increasing concerns.For certain patients, the use of dexamethasone should be avoided.Analysis shows that olanzapine can replace the effect of dexamethasone.Hence, the investigators initiated this prospective, multi-center, phase III study to validate the dexamethasone-free protocol: removing dexamethasone from a three drug regimen containing olanzapine, dexamethasone, and 5-HT3RA.

Enrollment: 275 patients

Sex: All

Ages: 18 to 80 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Patients 18 years of age or older with malignant disease；
2. Life expectancy ≥ 3 months;
3. Scheduled to receive highly emetogenic chemotherapy；
4. Had a European Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2

Exclusion criteria

1. There are contraindications to chemotherapy(Absolute number of neutrophils ≤ 1,500/uL, hemoglobin ≤ 90g/L, platelet count ≤ 10000/uL, serum creatinine level ≥ 2.0mg/dl (177 μmol/L), ALT and AST ≥ 2.5 times the upper normal limit, bilirubin ≥ 1.5 times the upper normal limit);
2. History of central nervous system disease (e.g., brain metastases or a seizure disorder);
3. Severe cognitive impairment；
4. Treatment with another antipsychotic agent such as risperidone, quetiapine, clozapine, a phenothiazine, or a butyrophenone within 30 days before enrollment or plans for such treatment during the study period;
5. Concurrent use of pharyngeal or abdominal radiotherapy;
6. Concurrent use of quinolone antibiotics;
7. Concurrent use of Amifostine;
8. Chronic alcoholism;
9. Known hypersensitivity to olanzapine;
10. Know arrhythmia, uncontrolled congestive heart failure or acute myocardial infarction within 6 months;
11. Known uncontrolled diabetes mellitus;
12. Vomiting or retching 24 hours before chemotherapy;
13. Use of anti-emesis drugs 48 hours before chemotherapy;
14. Patients who require medication with dexamethasone for pretreatment.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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275 participants in 2 patient groups

5HT3RA+Olanzapine

Experimental group

Description:

Using one of the 5-HT3 receptor antagonists within 30 minutes before cisplatin/adriamycin/cyclophosphamide.On day 1-4, Olanzapine is delivered orally after dinner.

Treatment:

Drug: 5HT3RA+Olanzapine

5HT3RA+Olanzapine+Dexamethasone

Active Comparator group

Description:

Using one of the 5-HT3 receptor antagonists within 30 minutes before cisplatin/adriamycin/cyclophosphamide.On day 1-4, Olanzapine is delivered orally after dinner.On first day, dexamethasone is given orally within 30 minutes before cisplatin/adriamycin/cyclophosphamide administered.

Treatment:

Drug: 5HT3RA+Olanzapine+Dexamethasone