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Safety and Efficacy of NF135 CPS Immunization — CPS135  

Malaria,Falciparum Clinical Trial

Official title:
Safety and Protective Efficacy of Chemoprophylaxis and Sporozoite Immunization With Plasmodium Falciparum NF135 Against Homologous and Heterologous Challenge Infection in Healthy Volunteers in the Netherlands

Clinical Trial Summary

This is an open label, randomized, controlled clinical trial. The primary aim of this project is to determine the safety and tolerability of NF135.C10 sporozoite immunization under chemoprophylaxis against homologous and heterologous challenge infection.

Clinical Trial Description

A total of 49 healthy volunteers will be allocated to receive either three immunizations with 15 NF135.C10 infected Anopheles mosquitoes (n=30), 3 immunizations with 5 NF135.C10 infected mosquitoes (n=10) or no immunizations (n=6). Immunizations in cohort A (n=20) will be performed under mefloquine prophylaxis, spaced 4 weeks apart. In cohort B, volunteers will not take mefloquine prophylaxis, instead all volunteers will be treated presumptively on day 7 after each immunization with a curative regimen of artemether/lumefantrine, regardless of parasitaemia or symptoms. Nineteen weeks after the last immunization, all volunteers plus naïve controls will be challenged either by the bites of 5 NF135.C10 (n=36) or 5 NF54 (n=13) infected mosquitoes. After challenge infection, volunteers will be followed up on an out-patient basis once daily for qPCR and safety lab measurements from day 6 until day 21 post challenge. All volunteers will be treated with a curative regimen of atovaquone/proguanil, either at the time of detection of blood stage parasitemia, or 28 days after challenge infection. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03813108
Study type Interventional
Source Radboud University Medical Center
Contact
Status Terminated
Phase N/A
Start date April 1, 2019
Completion date February 1, 2021
View Details
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