Efficacy, Safety, and PK of M5717 in Combination With Pyronaridine as Chemoprevention in Adults and Adolescents With Asymptomatic Plasmodium Falciparum Infection (CAPTURE-2)

NCT ID: NCT05974267

Last Updated: 2025-10-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

192 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-11-28

Study Completion Date

2024-12-29

Brief Summary

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This study will evaluate the efficacy and safety of a single dose of M5717 plus pyronaridine tetraphosphate in clearing current Plasmodium falciparum infection and protecting against recurrent infections in asymptomatic adults and adolescents. The study will also assess the duration of protection provided by different doses of M5717 plus pyronaridine and the additional contribution of M5717 to the duration of protection using external study data.

Detailed Description

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Conditions

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Malaria Infection

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Open Label
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Cohort 1: M5717 (60 mg) + Pyronaridine

Participants will receive single oral dose of M5717 60 milligram (mg) plus pyronaridine tetraphosphate (pyronaridine) 720 mg (Participants \>= 65 kilogram \[kg\]) or pyronaridine 540 mg (Participants \>= 45 to \< 65 kg) once daily in a single day treatment regimen.

Group Type EXPERIMENTAL

M5717 60 mg

Intervention Type DRUG

Participants will receive single oral dose (Capsules) of 60 mg M5717 on Day 1 under fasting condition

Pyronaridine

Intervention Type DRUG

Participants will receive Pyronaridine tablets orally single dose of 720 (Participants \>= 65 kg) and 540 mg (Participants \>= 45 to \< 65 kg) on Study Day 1 under fasting condition

Cohort 2: M5717 (200 mg) + Pyronaridine

Participants will receive single oral dose of M5717 200 mg plus pyronaridine 720 mg (Participants \>= 65 kg) or pyronaridine 540 mg (Participants \>= 45 to \< 65 kg) once daily in a single day treatment regimen.

Group Type EXPERIMENTAL

Pyronaridine

Intervention Type DRUG

Participants will receive Pyronaridine tablets orally single dose of 720 (Participants \>= 65 kg) and 540 mg (Participants \>= 45 to \< 65 kg) on Study Day 1 under fasting condition

M5717 200 mg

Intervention Type DRUG

Participants will receive single oral dose (Capsules) of 200 mg M5717 on Day 1 under fasting condition

Cohort 3: M5717 (660 mg)+ Pyronaridine

Participants will receive single oral dose of M5717 660 mg plus pyronaridine 720 mg (Participants \>= 65 kg) or pyronaridine 540 mg (Participants \>= 45 to \< 65 kg) once daily in a single day treatment regimen.

Group Type EXPERIMENTAL

Pyronaridine

Intervention Type DRUG

Participants will receive Pyronaridine tablets orally single dose of 720 (Participants \>= 65 kg) and 540 mg (Participants \>= 45 to \< 65 kg) on Study Day 1 under fasting condition

M5717 660mg

Intervention Type DRUG

Participants will receive single oral dose (Capsules) of 660 mg M5717 on Day 1 under fasting condition

Cohort 4: Atovaquone-proguanil

Participants will receive orally 3 doses of Malarone (fixed-dose combination of atovaquone-proguanil) once daily in a 3-day treatment regimen.

Group Type EXPERIMENTAL

Atovaquone-Proguanil

Intervention Type DRUG

Participants will Receive Atovaquone-Proguanil tablets 1000/400 mg once daily in a 3-day treatment regimen.

Interventions

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M5717 60 mg

Participants will receive single oral dose (Capsules) of 60 mg M5717 on Day 1 under fasting condition

Intervention Type DRUG

Pyronaridine

Participants will receive Pyronaridine tablets orally single dose of 720 (Participants \>= 65 kg) and 540 mg (Participants \>= 45 to \< 65 kg) on Study Day 1 under fasting condition

Intervention Type DRUG

Atovaquone-Proguanil

Participants will Receive Atovaquone-Proguanil tablets 1000/400 mg once daily in a 3-day treatment regimen.

Intervention Type DRUG

M5717 200 mg

Participants will receive single oral dose (Capsules) of 200 mg M5717 on Day 1 under fasting condition

Intervention Type DRUG

M5717 660mg

Participants will receive single oral dose (Capsules) of 660 mg M5717 on Day 1 under fasting condition

Intervention Type DRUG

Other Intervention Names

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Pyronaridine tetraphosphate

Eligibility Criteria

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Inclusion Criteria

* Participants with Asymptomatic Plasmodium falciparum Malaria with no Fever or other sign of Acute Uncomplicated Malaria and, with Microscopic confirmation using Giemsa-stained thick film, and a Parasitemia of \>= 40 to \<= 10,000 Asexual Parasites/Microliter (μL) of Blood.
* Axillary Temperature \< 37.0 degree Celcius (ºC) or oral/Tympanic/rectal Temperature\< 37.5ºC; without history of fever during the previous 48 hours.
* Have a body weight \>= 45 kilogram (kg)
* Participants capable of giving Signed Informed consent which includes Compliance with the requirements and restriction listed in the Informed consent form

Exclusion Criteria

* Participants with any disease requiring Chronic Treatment
* Participants with any Preplanned surgery during the study
* Participants with any previous Treatment with pyronaridine as part of a combination therapy during the last 3 months
* Participants with any adequate Hematological, Hepatic, and renal function as defined in the Protocol
Minimum Eligible Age

12 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Medical Responsible

Role: STUDY_DIRECTOR

Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany

Locations

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Groupe de Recherche Action en Sante (GRAS)

Ouagadougou, , Burkina Faso

Site Status

Kisumu County Referral Hospital

Kisumu, , Kenya

Site Status

MRC Unit The Gambia at LSHTM

Banjul, , The Gambia

Site Status

Ndola Teaching Hospital

Ndola, , Zambia

Site Status

Countries

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Burkina Faso Kenya The Gambia Zambia

Related Links

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Other Identifiers

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MS201618_0034

Identifier Type: -

Identifier Source: org_study_id

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