Active clinical trials for "Malaria"

Preliminary studies have supported the background efficacy of local standard anti-malarial medications in the treatment of uncomplicated knowlesi malaria, however there are no current WHO treatment guidelines for this infection. There are both health cost benefits to a more rapidly acting agent, and due to difficulties with microscopic identification there may be more effective treatment for all malaria species if an aligned treatment guideline could be supported. We are currently conducting a separate RCT using a similar protocol evaluating artesunate-mefloquine versus chloroquine for uncomplicated P. knowlesi malaria. However artemether-lumefantrine should also be compared against chloroquine due to the fact it is also a first line anti-malarial recommended in Malaysia, and there are potential differences in efficacy due to the different administration, absorption and half-life of artemether-lumefantrine. The investigators aim to test whether the fixed combination of artesunate-mefloquine is superior to chloroquine in order to define the optimal treatment for both uncomplicated P. knowlesi infection in both adults and children in this region.

This is a prospective, double-blind, double-dummy, multicenter, comparative study. A total of 300 subjects will be randomized to treatment on Day 1, of which a minimum of 50 female subjects must be enrolled that display moderate glucose-6-phosphate dehydrogenase (G6PD) deficiency (>=40% - <70% of the site median G6PD value). Subjects must have a blood smear that is positive for P. vivax at entry. Subjects will be randomized 2:1 to receive tafenoquine (TQ)/chloroquine(CQ) or the active comparator primaquine (PQ)/CQ. All subjects will receive CQ on Days 1 to 3, followed by TQ or PQ and matching placebo beginning on Day 1 or 2. Tafenoquine, or matching placebo, will be given as a single, 300mg dose. Subjects will receive PQ (15mg once daily) or matching placebo for 14 days. The duration of the study is 180 days, including screening and randomization to treatment (Day 1), three in-hospital days (Days 1-3), four out-patient visits while on treatment with study medication (Days 5, 8, 11 and 15) and seven follow-up visits (Days 22, 29, 60, 90, 120, 150 and 180). The primary safety data collected in this study will help to understand the hemolysis risk to both G6PD-normal and G6PD-deficient subjects. The efficacy data produced from this study will support the results for sister study TAF112582, the pivotal phase III efficacy and safety study of the TQ program.

A randomised, double-blind single-dose study to determine the efficacy, safety, tolerability and pharmacokinetics of OZ439 (artefenomel) in combination with piperaquine (PQP) in patients > 0.5 years and <= 70 years of age with uncomplicated Plasmodium falciparum malaria in Africa and Asia (Vietnam). Interim analyses for futility were planned. Adults and children will be included through progressive step-down in age following safety review by an independent safety monitoring board (ISMB). If the study were to meets its efficacy objectives, this will inform dose setting for Phase III studies.

The investigators propose to leverage the unique infrastructures and expertise of National Centre for Parasitology Entomology and Malaria Control and the Pasteur Institute in Cambodia and combine modern fieldwork, including a mobile laboratory fully equipped for molecular biology and culture experiments, with state-of-the-art genomic analyses to investigate how Plasmodium vivax parasites respond to antimalarial drugs. The investigators will focus on resistance to CQ, the choice treatment for vivax malaria in most endemic countries, for which treatment failures have been reported in Cambodia. The study will address some of the key biological mechanisms limiting the efficiency of drug therapy in P. vivax, including the identification of genetic polymorphisms underlying drug resistance in Cambodian P. vivax. The findings will provide a first unbiased perspective on the mechanisms of drug resistance in P. vivax and have the strong potential to significantly improve malaria control in Southeast Asia.

Mass Drug Administration (MDA) and Mass Screening and Selective Treatment (MST) might be applied as strategies for eliminating malaria when focusing on transmission stages. Many studies either with MDA or MST has been done in low transmission areas demonstrated the impact of those activities to reduce malaria transmission. However, in high transmission such study is still very limited which is becoming the reason behind this study. A randomized cluster trial of MST study using dihydroartemisinin-piperaquine plus primaquine (DHP + PQ) will be conducted in some villages at the Belu regency, Nusa Tenggara TImur province, Central Indonesia. There will be three arms in the study, i.e. (1) intervention arm of mass screening and treatment with interval of 6 weeks; (2) intervention arm of mass screening and treatment with interval of 3 months and (3) control arm without mass screening and treatment. The intervention arm with 6 weeks interval represents a new proposed method to detection malaria infections, while the intervention arm with 3 month interval represents the Ministry of Health current policy of active case detection in Indonesia, and the third arm will serve as the control for Ministry of Health's policy. The study will be conducted in 6 months period and evaluate various parameters including malaria incidence and proportion of anemia in monthly cohort school children (in arm1, 2 and 3), in addition to malaria prevalence in the community (only in arm 1 and arm 2). All positive subject in all arms will receive supervised treatment. Secondary objectives are the proportion of gametocytemia in the community, the proportion of malaria antibody of various age groups, population genetic of local parasite, submicroscopic incidence based polymerase chain reaction and the proportion of infective mosquitoes. Data analysis will be performed according to the method for cluster randomized trial evaluation.

Brain training exercises will be provided to children who survived an episode of severe malaria. These children will be given assessments for cognition, behaviour and executive functions before and after the brain training exercises.

This study will assess efficacy, safety , tolerability and PK in uncomplicated adult malaria patients with P. vivax or P. falciparum infection after 3 day dosing with KAF156 at 400 mg/day (Part 1) and single dosing with KAF156 at 800mg (Part 2)

The purpose of the study is to obtain efficacy, safety and pharmacokinetic (PK) data following treatment with artemether-lumefantrine dispersible tablet in infants < 5 kg of body weight (BW) with uncomplicated falciparum malaria.

Trial of monthly DHA-piperaquine for malaria prevention in health volunteers.

This is an initial efficacy study of a candidate antimalarial in human subjects with uncomplicated malaria caused by the most common and most important parasite in Africa (Plasmodium falciparum). This study will enroll 66 adult Malian males with uncomplicated P. falciparum malaria and randomize them to treatment with 1750 mg of the investigational drug (AQ-13) by mouth over 3 days or the current standard treatment, which is 2 doses of Coartem twice daily for 3 days. The hypothesis underlying this study is that AQ-13 will be similarly effective to Coartem for the treatment of uncomplicated P. falciparum malaria due to both chloroquine-susceptible and chloroquine-resistant parasites. Funding Source - FDA Office of Orphan Product Development (OOPD).