The purpose of this study was to evaluate PK, safety, tolerability and efficacy of a new formulation of artemether-lumefantrine dispersible tablet in neonates and infants \<5 kg body weight with acute uncomplicated Plasmodium falciparum malaria.
This was a multicenter, open-label, single-arm, adaptive design with dose adaptation (deescalation or escalation) study in infants and neonates \<5 kg body weight with P. falciparum malaria. There were two sequential and age-descending cohorts of participants, all \<5 kg: Cohort 1 of infants \>28 days of age, and Cohort 2 of neonates ≤ 28 days of age.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
28
Two oral dispersible tablets twice daily for three consecutive days. Each tablet contained artemether-lumefantrine 2.5 mg:30 mg.
Novartis Investigative Site
Nanoro, Burkina Faso
Novartis Investigative Site
Ouagadougou, Burkina Faso
Novartis Investigative Site
Kisantu, Bas Kongo, Democratic Republic of the Congo
Artemether Cmax After First Dose
Artemether Cmax represents the highest concentration between the concentrations at 1 hour and 2 hours after first dose. Pharmacokinetic (PK) parameters were calculated by non-compartmental analysis based on artemether plasma concentrations.
Time frame: 1 and 2 hours after first dose (Day 1)
Lumefantrine Day 8 Concentration (C168h)
Pharmacokinetic (PK) parameters were calculated by non-compartmental analysis based on lumefantrine plasma concentrations. Dosing times were 0, 8, 24, 36, 48 and 60 hours.
Time frame: 168 hours after first dose (corresponding to 108 hours after last dose)
Lumefantrine Cmax After Last Dose
Lumefantrine Cmax represents the highest concentration among four sampling time points after last dose. Pharmacokinetic (PK) parameters were calculated by non-compartmental analysis based on lumefantrine plasma concentrations. Dosing times were 0, 8, 24, 36, 48 and 60 hours.
Time frame: 62, 66, 68 and 84 hours after first dose (corresponding to 2, 6, 8 and 24 hours after last dose)
DHA Cmax After First Dose
Dihydroartemisinin (DHA) is an active metabolite of artemether. DHA Cmax represents the highest concentration between the concentrations at 1 hour and 2 hours after first dose. Pharmacokinetic (PK) parameters were calculated by non-compartmental analysis based on DHA plasma concentrations.
Time frame: 1 and 2 hours after first dose (Day 1)
Parasite Clearance Time (PCT)
PCT is defined as time from the first dose until the first total and continued disappearance of asexual parasite forms which remained at least a further 48 hours. PCT is based on uncorrected parasite counts. Patients who received rescue medication before parasite clearance were censored at the first use of rescue medication. Patients without parasite clearance were censored at the time of last parasite assessment. PCT was calculated using the Kaplan-Meier method.
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Time frame: Up to 48 hours after first dose
Fever Clearance Times (FCT)
FCT is defined as time from the first dose until the first time the axillary body temperature decreased below and remained below 37.5°C axillary or 38.0°C oral/tympanic/rectal for at least a further 24 hours. Patients who received rescue medication before fever clearance were censored at the first use of rescue medication. Patients without fever clearance were censored at the time of last parasite assessment. FCT was calculated using the Kaplan-Meier method.
Time frame: Up to 36 hours after first dose
PCR-corrected Adequate Clinical and Parasitological Response (ACPR) - PPS Analysis
PCR-corrected ACPR, defined as the absence of parasitemia, was evaluated on Days 15, 29 and 43. Microscopic species identification was confirmed and determined by polymerase chain reaction (PCR) genotyping methods to establish malaria recrudescence/reinfection. A participant was considered as PCR-corrected ACPR if the participant did not meet any of the criteria of early treatment failure, late clinical failure or late parasitological failure and had absence of parasitemia on Days 15, 29 or 43 irrespective of axillary temperature unless the presence of parasitemia after 7 days was due to reinfection based on PCR. A presence of parasitemia after 7 days of treatment initiation was considered as a reinfection only if the parasitemia was clear before Day 8 and none of the parasite strain(s) detected on Day 8 or later matched with the parasite strain at baseline based on PCR.
Time frame: Days 15, 29 and 43
PCR-corrected Adequate Clinical and Parasitological Response (ACPR) - FAS Analysis
PCR-corrected ACPR, defined as the absence of parasitemia, was evaluated on Days 15, 29 and 43. Microscopic species identification was confirmed and determined by polymerase chain reaction (PCR) genotyping methods to establish malaria recrudescence/reinfection. A participant was considered as PCR-corrected ACPR if the participant did not meet any of the criteria of early treatment failure, late clinical failure or late parasitological failure and had absence of parasitemia on Days 15, 29 or 43 irrespective of axillary temperature unless the presence of parasitemia after 7 days was due to reinfection based on PCR. A presence of parasitemia after 7 days of treatment initiation was considered as a reinfection only if the parasitemia was clear before Day 8 and none of the parasite strain(s) detected on Day 8 or later matched with the parasite strain at baseline based on PCR.
Time frame: Days 15, 29 and 43
PCR-uncorrected Adequate Clinical and Parasitological Response (ACPR)
PCR-uncorrected ACPR, defined as the absence of parasitemia, was evaluated on Days 8, 15, 29 and 43. A participant was considered as PCR-uncorrected ACPR if the participant did not meet any of the criteria of early treatment failure, late clinical failure or late parasitological failure and had absence of parasitemia on Days 8, 15, 29 or 43 irrespective of axillary temperature.
Time frame: Days 8, 15, 29 and 43
Number of Participants With Recrudescence Events
Recrudescence is defined as appearance of asexual parasites after clearance of initial infection with a genotype identical to that of parasites present at baseline. Recrudescence had to be confirmed by PCR analysis.
Time frame: Days 15, 29 and 43
Number of Participants With New Infections Events
New infection is defined as appearance of asexual parasites after clearance of initial infection with a genotype different from those parasites present at baseline. New infection had to be confirmed by PCR analysis.
Time frame: Days 15, 29 and 43
Number of Participants With Adverse Events (AEs)
Number of participants with adverse events (any AEs regardless of seriousness), including changes in laboratory results qualifying and reported as adverse events.
Time frame: From first dose of study treatment until Day 43
Number of Participants With Serious Adverse Events (SAEs)
Number of participants with serious adverse events (SAEs), including changes in laboratory results qualifying and reported as serious adverse events.
Time frame: From first dose of study treatment until 12 months of age (assessed up to maximum 1 year)