Clinical Research Directory

Safety and Efficacy of Imatinib in Combination With Artemether-Lumefantrine for Uncomplicated Malaria

This study is investigating an innovative approach to treating uncomplicated malaria by adding a drug called Imatinib to the current standard of care, Artemether + Lumefantrine (AL). The researchers hope this combination, known as ALIM, will clear infections faster and stop the spread of drug-resistant parasites that are becoming a major threat in Africa

Safety and PK of MMV371 LAI in Healthy Adults and Adolescents in Rwanda

This Phase 1b study will assess the safety, tolerability and pharmacokinetics (PK, this measures the levels of study drug in the body) of a single injection of MMV371 in healthy adult and adolescent participants in Rwanda. MMV371 has been designed as a long acting injection (LAI). Protective efficacy (PE) will be assessed as an exploratory endpoint. Protective efficacy measures if participants are protected from becoming ill with malaria whilst the MMV371 is still present in their body. The study will enroll approximately 80 healthy male and female participants, aged 12 to 50 years. Before starting the study participants will be given a standard approved course of artemether lumifantrine (AL) to clear any malaria infection they have. Once the AL course has been completed the study drug will be given by injection in the muscle of the upper arm, the side of the thigh, or the hip. Three out of four participants will receive MMV371 and 1 in four participants will receive placebo. Placebo is a dummy medicine. All participants have an equal chance of being assigned to receive the injection in the upper arm, outer thigh or hip. Neither the participants nor the researchers treating the participants will know who received MMV371 or placebo until after the study is completed. Key study features include: * Study duration for each participant: up to 7 months * MMV371 or placebo given: a single intramuscular (IM) injection * Visit schedule: Participants will remain in-clinic on Days -1-2 (2 overnight stays), followed by 15 follow-up visits: Day 4, then weekly for 1 month, and subsequently every 2 weeks until the End-of-Study (EoS) visit at Week 24. These frequent visits are necessary to monitor safety, the levels of MMV371 in the body, and to perform malaria detection testing until EoS (Week 24).

Artemisinin Partial Resistance in Ethiopian Plasmodium Falciparum: A Multisite Clinical, Molecular and In Vitro Study

Artemisinin-based combination therapies (ACTs) are the main treatment for falciparum malaria in Africa. Artemisinin partial resistance (ART-R), characterized by delayed parasite clearance after treatment, has been confirmed in four sub-Saharan African countries. In Ethiopia, molecular surveys have detected the Pfkelch13 R622I mutation associated with ART-R at multiple sites, but no study has yet combined clinical, molecular, and in vitro evidence to confirm ART-R per WHO criteria. This multisite study conducted across five sentinel sites in Ethiopia (2024-2025) assessed day-3 parasite positivity after artemether-lumefantrine treatment, Pfkelch13 genotyping, and ring-stage survival assay on culture-adapted field isolates, to determine whether ART-R is confirmed in Ethiopian Plasmodium falciparum populations.

Dose Finding Trial of R21/Matrix-M in School Children

This trial is a double-blind, randomised, trial recruiting participants from the R21 phase IIb trial (VAC 076) which took place between May 2019 and July 2023 in Nanoro, Burkina Faso. Participants (n=30-40) who have previously received four doses of the 5µg R21/50µg Matrix-M malaria vaccine in VAC 076 will be randomised to receive either 5µg R21/50µg Matrix-M or 10µg R21/50µg Matrix-M. Safety and immunogenicity of a booster at school age at these two different doses will be assessed. Participants will be followed up for one year after the booster.

Field Trial of PfSPZ-LARC2 Vaccine in Burkinabe Adults

This is a phase 2 clinical trial of a Plasmodium falciparum (Pf) late liver stage-arresting replication-competent (LARC) sporozoite (SPZ) vaccine (Sanaria® PfSPZ-LARC2 Vaccine) that will assess field efficacy in Africa. The PfSPZ comprising PfSPZ-LARC2 Vaccine contain a double deletion of the genes encoding the Mei2 and LINUP proteins, both of which are required for transition from liver to blood stage malaria. As a result, mei2-/linup- parasites undergo developmental arrest in the late liver stages without releasing merozoites into the blood stream. No blood stage parasites are produced, either asexual or sexual, and the parasite life cycle does not progress. Because Pf parasites with the LARC phenotype replicate in the liver before disintegrating, they amplify and diversify parasite protein expression and are expected to be a potent immunogen to induce anti-malarial immunity, equaling or exceeding the potency and efficacy of the replication-competent chemo-attenuated Sanaria® PfSPZ-CVac (chloroquine) vaccine approach. Because the parasites are intrinsically attenuated, they are expected to be safe and well tolerated, similar to radiation-attenuated Sanaria® PfSPZ Vaccine, to the replication deficient, early arresting PfSPZ-GA1 Vaccine, and to the single-gene(mei2)-deleted GA2 (LARC1) parasites tested at the Leiden University Medical Center that provided 90% protection against CHMI after a single dose. The active treatments to be assessed for efficacy are one immunization of 6.0x10\^5 PfSPZ or two immunizations with 4.0x10\^5 PfSPZ of PfSPZ-LARC2 Vaccine four weeks apart, timed so that the immunization of the one dose regimen coincides with the second immunization of the two dose regimen. The alternative treatment is immunization with normal saline (placebo group), which is indistinguishable from the test article. The primary variable of interest is whether and when trial participants develop Pf malaria parasitemia during surveillance. Malaria parasitemia will be detected by thick blood smear (TBS), which will be performed every two weeks starting two weeks after the second vaccination (to allow time for the vaccine to work) and extending to week 26 after the second vaccination (24-week surveillance period). Surveillance will continue for 40 weeks but the primary outcome will be determined at 24 weeks of surveillance so the data are comparable to other studies of PfSPZ vaccines.