Clinical Research Directory

Olanzapine Dose Comparison for the Prevention of HER-INV: A Network Meta-Analysis

Olanzapine is an effective antiemetic agent for preventing highly emetogenic regimens-induced nausea and vomiting (HER-INV) in patients receiving highly emetogenic regimens (HER). The optimal dose remains debated, with the standard 10 mg dose often causing significant daytime sedation. Recent evidence suggests that lower doses (2.5 mg and 5 mg) may offer comparable efficacy with improved tolerability. However, no head-to-head randomized controlled trials (RCTs) directly compare all three doses.

Does GLP-1RA Prevent Deterioration of Metabolic State in Prediabetic and Diabetic Patients Treated With Antipsychotic Medication?

Background and objective: Clozapine and olanzapine are some of the most effective antipsychotic drugs, but unfortunately, both drugs induce weight gain and conveys a high degree of metabolic disturbances. The antipsychotic-induced side-effects cause a major clinical problem among patients diagnosed with schizophrenia receiving antipsychotic treatment. Limited effects have been demonstrated for counteracting the side-effects by the switch of antipsychotic therapy, non-pharmacological/behavioural interventions or adjunct pharmacological treatments. Semaglutide, a glucagon-like peptide-1 receptor agonist (GLP-1RA,) is approved for the treatment of type 2 diabetes worldwide. The objective of the study is to investigate effects of semaglutide once-weekly vs. semaglutide placebo once-weekly on the metabolic state in prediabetic or diabetic patients with schizophrenia, who have initiated treatment with clozapine or olanzapine. Methods and analysis: Trial design, intervention and participants: The study is a 26-week, double-blinded, randomized, parallel-group, placebo-controlled, good clinical practice (GCP)-monitored, clinical trial. 104 prediabetic or diabetic patients diagnosed with a schizophrenia, age 18 years and 65 years, who have initiated of clozapine- or olanzapine-treatment within 5 years will be included in the study. The patients will be randomized to receive blinded treatment in one of the two study arms; semaglutide once-weekly vs. semaglutide placebo. All participants who complete the 26 weeks of intervention, will be invited for a follow up visit 1.5 yeras after study completion. The primary endpoint is the change from baseline in glycated haemoglobin A1c (HbA1c). Secondary endpoints include change in body weight, hip and waist circumference, vitals, and plasma levels of insulin, glucose, C-peptid, insulin sensitivity, beta cell function, glucagon, liver function, lipid profile, incretin hormones, lipid profile, bone makers, body composition, bone density and proteomic analyses. Additional endpoints include alcohol, tobacco and drug use, food preferences, psychopathology, activity and quality of life.

HALO Trial: Haloperidol vs Olanzapine in Hyperactive Delirium in Palliative Care Patients; A Multi-Centre, Randomised-Controlled Trial

1. Background and Clinical Need: Delirium is common at the end of life and is challenging to control. There is a clinical need to study the benefits of commonly used drugs like Haloperidol and Olanzapine in the management of hyperactive delirium in advanced cancer or end-stage organ disease patients in a scientifically robust manner. 2. Aims/Hypotheses: The investigators aim to study the effectiveness of Haloperidol compared with Olanzapine in the management of hyperactive delirium in advanced cancer or end-stage organ disease patients receiving palliative care. The investigators hypothesise that Olanzapine is as effective as Haloperidol in the control of hyperactive delirium. 3. Methods: The investigators will conduct a pragmatic, multi-centre, (hospital, inpatient hospice, community hospital) open-label randomised-controlled trial comparing the use of Haloperidol versus Olanzapine in advanced cancer or end-stage organ disease patients with hyperactive delirium. The primary outcome is the change in Richmond Agitation and Sedation Scale (RASS) scores among patients in each treatment group at 8 hours post-drug administration. The secondary outcome is the control of hyperactive delirium at 24, 48 and 72 hours using either Haloperidol or Olanzapine. The mean doses of Haloperidol and Olanzapine used as well as the volume of rescue Midazolam required as well as side-effects of the study medications, survival after enrolment into study will also be studied. 4. Significance to palliative care The results of this study will advance the knowledge of delirium management worldwide with regards to the efficacy of Haloperidol and Olanzapine in managing hyperactive delirium in patients with advanced cancer or end-stage organ disease. Haloperidol is used traditionally in palliative care for managing delirium. However, as a conventional anti-psychotic, it does cause extra-pyramidal side-effects. Olanzapine, a newer atypical anti-psychotic with a more favourable side-effect profile is being used increasingly in the control of delirium. These 2 commonly used drugs have never been compared head to head in a randomised-controlled, multi-centre study.

Survival With Olanzapine in Patients With Locally Advanced or Metastatic Upper Gastrointestinal and Lung Cancer

This study aims to assess the impact of adding olanzapine to nutritional advice and standard anti-tumor therapy on the survival and safety of patients with locally advanced, unresectable or metastatic gastric cancer, esophageal cancer, hepato-pancreaticobiliary cancer, and lung cancer. Researchers seek to determine whether olanzapine can improve progression-free survival (PFS), overall survival (OS), and objective response rate (ORR) in advanced cancer patients who received standard anti-tumor therapy, and investigate the relationship between olanzapine-induced weight changes and patient survival.