A longitudinal study with four parallel cohorts with each participant followed for 2 years: two cohorts in Busia (high malaria transmission site) and two cohorts in Kampala (low malaria transmission). Each site will have a cohort of children living with HIV (CLHIV) and HIV- uninfected children and will be age-matched, enrolled in parallel, and followed for two years. All children will be enrolled without malaria infection, as determined by a negative blood smear at baseline.
CLHIV will be maintained on a dolutegravir (DTG) based regimen for \>2 weeks prior to enrolment to ensure steady state. All children in Busia (HIV-infected and HIV-uninfected) will be enrolled and then randomized to receive either artemether- lumefantrine (AL) or artesunate-amodiaquine (AS-AQ) for each episode of malaria which occurs over longitudinal follow-up in year one. During year 1, they will continue to receive the same antimalarial each time they are treated for uncomplicated malaria. In year two, those children randomized to the AL arm will begin to receive an alternating regimen for each subsequent malaria episode (AS-AQ, then AL, then AS-AQ, etc..). If local/national guidelines in Uganda for malaria change during the course of the study, the treatment arms will be altered as applicable. Aim 1: To what extent does DTG impact, BMI, body composition and metabolic changes? Aims 2 and 3: Are there critical drug-drug interactions between DTG and first line artemisinin-based combination therapies (ACTs)? Do these changes impact HIV and malaria outcomes? What is the status of ACT resistance and its relationship to PK exposure? MALARIA CASE DEFINITION: Uncomplicated malaria (all of the following) * Fever (≥ 37.5ºC axillary) or history of fever in the previous 24 hours * Positive thick blood smear (any parasitemia) * Absence of severe malaria Severe malaria * Evidence of severe malaria as per WHO criteria
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
Participants will receive the dispersible formulation of AL with contains 20 mg artemether, 120 mg of lumefantrine
Children will receive the tablet formulations of Artesunate Amodiaquine using weight based dosing
Baylor- Uganda
Kampala, Uganda
RECRUITINGInfectious Disease Research Collaboration (IDRC)
Kampala, Uganda
RECRUITINGChange in Body Mass Index (BMI)
Change in BMI from baseline and 2 years in kg/m² (Cohort 1 + 3 vs Cohort 2 + 4)
Time frame: baseline and 2 years
Drug pharmacokinetic (PK) exposure
Comparison of drug exposure by DTG and anti-malarial regimen using Area under the curve (AUC) (Cohort 1 vs 3)
Time frame: baseline up to 2 years
Drug pharmacokinetic exposure
Comparison of drug exposure by DTG and anti-malarial regimen using Area under the curve (AUC) (Cohort 3 vs 4)
Time frame: baseline up to 2 years
Recurrence rate of malaria
To assess the 28 and 42 day efficacy of AL and AS-AQ for the treatment of uncomplicated malaria in children with and without HIV.
Time frame: 28 days and 42 days
Average change in glucose sensor readings
Change in average of continuous glucose monitor readings over the last 10 days. (Cohorts 1 vs 2)
Time frame: every 6 months up to 2 years
Change in insulin resistance (HOMA-IR)
Change in HOMA-IR in those living with and without HIV. (Cohorts 1+3 vs 2+4)
Time frame: baseline and 2 years
Change in Body Mass Index (BMI)
Change in BMI in children living with HIV from baseline and 2 years in kg/m² (Cohort 1 vs 3)
Time frame: baseline and 2 years
Pharmacokinetic parameters
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AUC (0-8h) and AUC (last) for lumefantrine and DEAQ. (Cohorts 1 and 3)
Time frame: immediately post drug exposure (Day 1)
Change in HIV viral load
Change of HIV viral load suppression in those on DTG vs children not living with HIV. (Cohorts 1 vs 3)
Time frame: every 6 months up to 2 years
Malaria treatment outcome
28 and 42 day antimalarial treatment efficacy in those on DTG vs Children not living with HIV, as measured by peripheral blood smears
Time frame: 28 days and 42 days
HIV genotypic resistance to DTG
Resistance to DTG (binary measures as yes/no) as measured by HIV molecular genotype (Cohort 1 and 3)
Time frame: baseline and 2 years
Artemisinin PK concentration-time profile
Area under the plasma concentration versus time curve (AUC) in those receiving AL vs AS-AQ. (Cohorts 3 and 4)
Time frame: During treatment of malaria episodes over 2 years
Rate of parasite clearance
Parasite clearance half-life in those treated with AL vs AS-AQ. (Cohorts 3 and 4)
Time frame: During treatment of malaria episodes over 2 years
Rate of parasite clearance and HIV
Parasite clearance half-life in those living with HIV and those not living with HIV. (Cohorts 3 and 4)
Time frame: During treatment of malaria episodes over 2 years
Gametocyte quantity
Quantity of gametocytes in the peripheral blood in those treated artemisinin sensitive vs resistant infections. (Cohorts 3 and 4)
Time frame: At the time of presentation with malaria up to 2 years