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Phase 2 N=140 Randomized Treatment

Study to Investigate the Clinical and Parasiticidal Activity and Pharmacokinetics of Different Doses of Artefenomel and Ferroquine in Patients With Uncomplicated Plasmodium Falciparum Malaria

Plasmodium Falciparum Infection

Enrolled (actual)
140
Serious AEs
0.7%
Results posted
Dec 2020
Primary outcome: Primary: Percentage of Participants With Polymerase Chain Reaction (PCR)-Corrected Adequate Clinical and Parasitological Response (ACPR) at Day 28 (ACPR28) — 80.8; 90.3; 90.9; 87.1 percentage of participants

Study Design & Population

Study type
Interventional
Phase
Phase 2
Interventions
Artefenomel (OZ439) (Drug); Ferroquine (SSR97193) (Drug)
Age
Pediatric, Adult, Older Adult · 14+ yrs
Sex
All
Sponsor
Sanofi
Primary completion
Nov 2019

Outcome Measures

OutcomeResultp-value
PRIMARY
Percentage of Participants With Polymerase Chain Reaction (PCR)-Corrected Adequate Clinical and Parasitological Response (ACPR) at Day 28 (ACPR28)
80.8; 90.3; 90.9; 87.1
SECONDARY
Percentage of Participants With Crude Adequate Clinical and Parasitological Response at Day 28
64.5; 81.8; 77.8; 78.1
SECONDARY
Parasitemia: Change From Baseline in Number of Parasites Per Microliter of Blood at 6, 12, 18, 24, 30, 36, 48, 72, 96, 120, 144 and 168 Hours
17496.0; 18799.6; 15171.9; 20546.8; -1349.3; -96.9
SECONDARY
Observed Parasite Reduction Ratio (PRR) at 24 Hours, 48 Hours, and 72 Hours
638.436; 5921.197; 5715.046; 7929.720; 9709.093; 17594.700
SECONDARY
Time to 50% and 99% Parasite Reduction
14.07; 7.74; 7.78; 9.47; 36.92; 19.33
SECONDARY
Parasite Clearance Time (PCT)
56.1; 30.0; 30.0; 30.0
SECONDARY
Parasite Clearance Rate
0.1956; 0.3609; 0.3962; 0.3581
SECONDARY
Time to Re-emergence
NA; NA; NA; NA
SECONDARY
Time to Recrudescence
NA; NA; NA; NA
SECONDARY
Time to Re-infection
NA; NA; NA; NA
SECONDARY
Time Elapsed Below the Limit of Quantification (LOQ) of Parasitemia
25.0; 26.0; 26.5; 26.0
SECONDARY
Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs) and Adverse Event of Special Interest (AESI)
18; 21; 24; 24; 0; 0
SECONDARY
Pharmacokinetics (PK): Concentration of OZ439 in Plasma
88.641; 149.199; 188.423; 269.075; 450.218; 655.851
SECONDARY
Pharmacokinetics: Concentration of FQ and Its Active Metabolite SSR97213 in Blood
36.094; 27.214; 21.165; 26.599; 13.209; 10.375
SECONDARY
Pharmacokinetics: Maximum Observed Plasma Concentration (Cmax) of Artefenomel
277.3; 488.3; 920.6
SECONDARY
Pharmacokinetics: Time to Reach Maximum Plasma Concentration (Tmax) of Artefenomel
SECONDARY
Pharmacokinetics: Plasma Concentration at 168 Hours Post-dose (C168h) of Artefenomel
0.9251; 2.152; 4.445
SECONDARY
Pharmacokinetics: Area Under the Concentration Curve (AUC) Form Time 0 to Infinity (AUC0-inf]) of Artefenomel
3.269; 6.46; 13.05
SECONDARY
Pharmacokinetics: Terminal Half-life (t1/2) of Artefenomel
SECONDARY
Pharmacokinetics: Maximum Observed Plasma Concentration of Ferroquine and Its Active Metabolite SSR97213
80.99; 79.95; 72.64; 82.45; 24.58; 22.65
SECONDARY
Pharmacokinetics: Time to Reach Maximum Plasma Concentration of Ferroquine and Its Active Metabolite SSR97213
SECONDARY
Pharmacokinetics: Plasma Concentration at 168 Hours Post-dose of Ferroquine and Its Active Metabolite SSR97213
15.86; 18.32; 18.69; 17.83; 16.15; 16.03
SECONDARY
Pharmacokinetics: Area Under the Concentration Curve Form Time 0 to Day 28 (AUC0-28) of Ferroquine and Its Active Metabolite SSR97213
8.874; 10.33; 10.13; 10.14; 8.878; 9.051
SECONDARY
Pharmacokinetics: Area Under the Concentration Curve From Time 0 to Infinity of Ferroquine and Its Active Metabolite SSR97213
15.5; 17.81; 16.3; 16.87; 19.58; 20.09
SECONDARY
Pharmacokinetics: Terminal Half-life of Ferroquine

Summary

Primary Objective: To show the contribution of artefenomel (OZ439) to the clinical and parasiticidal effect of OZ439/Ferroquine (FQ) combination by analyzing exposure-response of OZ439 measured by Day 28 polymerase chain reaction (PCR)-corrected adequate clinical and parasitological response (ACPR) for the effect and the area under the curve (AUC) of OZ439 as pharmacokinetic (PK) predictor. Secondary Objectives: * To evaluate the exposure-response of OZ439 combined with FQ on crude Day 28 ACPR. * To evaluate the dose response of OZ439 combined with FQ on PCR-corrected and crude Day 28 ACPR. * To evaluate the dose-response of OZ439 combined with FQ on selected secondary endpoints. * To evaluate the safety and tolerability of different dosages of OZ439 in combination with FQ and FQ alone. * To characterize the PK of OZ439 in plasma, and of FQ and its active metabolite SSR97213 in blood.

Eligibility Criteria

Inclusion criteria

Participants (14-69 years old inclusive) with body weight within 35 and 90 kilograms (kg), with uncomplicated Plasmodium falciparum (P. falciparum) malaria, with a fever as defined with axillary temperature greater than or equal to (>=) 37.5 degree Celsius (°C) or oral/ rectal/ tympanic temperature >=38°C or history of fever in the previous 24 hours (history of fever was documented), with a mono-infection with P. falciparum and parasitemia (microscopically, blood smear) >= 3,000 and less than or equal to ( ) 2 upper limit of normal range (ULN), or alanine transferase >2 ULN or total bilirubin >1.5 ULN.

  • Positive pregnancy test at study screening for female participants of childbearing potential.
  • QT interval corrected using Fridericia formula (QTcF) >450 milliseconds at screening or pre-dose.
  • Hypokalemia (<3.5 millimoles per liter [mmol/L]), hypocalcemia (<2.0 mmol/L) or hypomagnesemia (<0.5 mmol/L) at screening or pre-dose.
  • Family history of sudden death or of congenital prolongation of the QT interval or known congenital prolongation of the QT-interval or any clinical condition known to prolong the QT interval e.g., participants with a history of symptomatic cardiac arrhythmias including atrial fibrillation or with clinically relevant bradycardia.
  • Participant not suitable for participation, whatever the reason, as judged by the Investigator, included medical or clinical conditions, or participants potentially at risk of noncompliance to study procedures or unable to drink.

The above information was not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.

View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT03660839). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.

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