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Status unknownNCT03814616Updated Sep 30, 2019

Pyramax in Asymptomatic Carriers of P. Falciparum Monoinfections

A Phase 2 interventional study of Pyronaridine tetraphosphate 180mg:artesunate 60mg in Malaria,Falciparum, sponsored by Shin Poong Pharmaceutical Co. Ltd.. Status unknown at 2 sites in 2 countries. Open to participants aged 5 Years and older. Per ClinicalTrials.gov, last updated 2019-09-30.

Sponsored by Shin Poong Pharmaceutical Co. Ltd. · Phase 2, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Sep 2019), so the status shown — last known as Active, not recruiting — may be out of date.
Phase
Phase 2
Study type
Interventional
Enrollment
300
Allocation
Randomized
Ages
5 Years and older
Sex
All
01

Study summary

This study will assess the efficacy of Pyramax administered for three-day, two-day or one day, in clearing a P. falciparum infection in asymptomatic carriers.

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Read the detailed description

This is a randomized, open-label, three-arm, out-patient study in asymptomatic individuals with P. falciparum monoinfection confirmed at baseline, who are >5 years of age and >20kg body weight. A total of 300 participants will be randomised into the study; 100 participants in each of three treatment arms.

Patients who fulfil the entry criteria (all inclusion and none of the exclusion criteria) will be recruited and randomized to receive Pyramax orally for three days, two days or one day in a randomization ratio of 1:1:1.

All participants will be followed until Day 63 (counted from day 0) and blood samples will be taken on Days 0, 1, 2, 3, 7, 14, 21, 28, 35, 42 and 63 for malaria diagnostics, parasite density and qPCR. In addition, blood samples reverse-transcriptase (RT)-PCR will be taken on Days 0, 1, 2, 3, 7 and 14.

Participants will be administered local SOC treatment if they meet any of the protocol-specific criteria of treatment failure: Early treatment failure, Late clinical failure, or Late parasitological failure up to and including Day 63, or if the participant withdraws at any time before Day 63, and is parasite positive.

02

Conditions studied

  • Malaria,Falciparum

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Keywords

  • Asymptomatic malaria
03

In context

Malaria, Falciparum

455 studies on the registry are indexed under Malaria, Falciparum; 37 are open to participants now.

This study's enrollment of 300 is above the median of 126 across 376 interventional studies indexed under Malaria, Falciparum.

Browse Malaria, Falciparum studies →

Lead sponsor

Shin Poong Pharmaceutical Co. Ltd. is the lead sponsor of 27 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
5 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Evidence of asymptomatic infection with Plasmodium falciparum monoinfection on thin and thick blood smears with parasite density between 20/µL and 50,000/µL
  2. Absence of any clinical symptoms of malaria at the time of enrolment and within 72 hours before enrolment
  3. Age >5 years old and >20 kg body weight
  4. Ability to swallow oral medication
  5. Evidence of a personally signed and dated document indicating that the participant (or a legally acceptable representative if a participant is \<18 years of age) has been informed of all pertinent aspects of the study and that all questions by the participant have been sufficiently answered. Assent will be obtained from participants \<18 years of age as required by national regulations.
  6. Participants who are willing to and are able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures.

Exclusion criteria

Exclusion Criteria:

  1. \<7 g/dL (measured at screening)
  2. History of having received any antimalarial treatment (alone or in combination) during the following periods before screening:

    1. Piperaquine, mefloquine, naphthoquine or sulfadoxine-pyrimethamine within 6 weeks prior to screening
    2. Amodiaquine, chloroquine within 4 weeks prior to screening
    3. Any artemisinin derivative (artesunate, artemether or dihydroartemisinin), quinine, lumefantrine or any other anti-malarial treatment or antibiotic with antimalarial activity (including cotrimoxazole, tetracyclines, quinolones and fluoroquinolones and azithromycin) within 14 days prior to screening
  3. Any herbal products or traditional medicines during the 7 days prior to screening (if spontaneously reported by the patient)
  4. Known allergy to the study drugs (pyronaridine and/or any artemisinin derivatives)
  5. Positive urinary pregnancy test for women of reproductive age
  6. Lactating women
  7. Evidence of severe malnutrition
  8. Participation in other studies within 30 days before the current study begins and/or during study participation
  9. Inability to comprehend and/or unwillingness to follow the study protocol
  10. Previously randomized in this study
  11. Severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the participant inappropriate for entry into this study. Examples would include but not limited to:

    1. Immunological disorders (including known seropositive antibody),
    2. Severe psychiatric disorders (active depression, recent history of depression, generalised anxiety, psychosis, schizophrenia or other major psychiatric disorders) and major medical disorders related to cardiovascular, respiratory (including active tuberculosis), renal, gastrointestinal, endocrine, infectious, , neurological (including auditory) and history of convulsions or other abnormality (including recent head trauma),
    3. Clinical signs or symptoms of hepatic injury (such as nausea, abdominal pain associated with jaundice) or known severe liver disease (i.e. decompensated cirrhosis, stage 3 or 4)
  12. Participant the Investigator considers at particular risk of receiving an anti-malarial or of participating in the study
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Child-Pugh class

A score of how well the liver works in people with liver disease such as cirrhosis: class A is mild, B moderate and C severe.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
300 participants (actual)

Study arms

  • Experimental
    Arm Pyramax 3 days

    Pyramax (pyronaridine tetraphosphate 180mg:artesunate 60mg) will be administered, once per day according to body weight for three days (Arm A)

    Drug: Pyronaridine tetraphosphate 180mg:artesunate 60mg

  • Experimental
    Arm Pyramax 2 days

    Pyramax (pyronaridine tetraphosphate 180mg:artesunate 60mg) will be administered, once per day according to body weight for two days (Arm B)

    Drug: Pyronaridine tetraphosphate 180mg:artesunate 60mg

  • Experimental
    Arm Pyramax 1 day

    Pyramax (pyronaridine tetraphosphate 180mg:artesunate 60mg) will be administered, once per day according to body weight for one day (Arm C)

    Drug: Pyronaridine tetraphosphate 180mg:artesunate 60mg

Interventions

06

What researchers measure

Primary outcomes

  1. PCR-adjusted APR at Day 28 (based on slide assessment by microscopy)

    To assess the efficacy of each dosing regimen PCR-adjusted Adequate parasitological response (APR) at Day 28

    Time frame: Day 28

Secondary outcomes

  1. PCR-adjusted APR

    To assess the efficacy of each dosing regimen PCR-adjusted APR at Day 63

    Time frame: 63 days

  2. PCR-unadjusted APR

    To assess the efficacy of each dosing regimen PCR-unadjusted APR at Day 63

    Time frame: 63 days

  3. Rate of recurrent infections, recrudescence and new infections

    To assess the efficacy of each dosing regimen on rate of recurrent infections, recrudescence and new infections

    Time frame: 63 days

  4. Proportion of parasite free participants

    Proportion of participants who are parasite free by 4-8 hours, Day 1, Day 2 and Day 3 post first dosing

    Time frame: 4 days

  5. Gametocyte incidence

    The area under the curve (AUC) up to Day 14 (post first dose) of gametocytes in participants with gametocytes at baseline, and separately in participants without gametocytes at baseline

    Time frame: 14 days

  6. Adverse Events

    * Number (%) of patients and number of events with: * TEAEs, * serious TEAEs, * study drug related TEAEs, * study drug related serious TEAEs, * malaria-related TEAEs, * malaria-related serious TEAEs * Number (%) of patients with TEAEs and drug-related TEAEs by maximum severity, based on Grade 1 to Grade 5 (CTCAE V4.03) severity grading Adverse events will be coded by MedDRA primary system organ class and preferred term. * Hepatotoxicity related TEAEs o The number and percentage of patients with hepatotoxicity related TEAEs, based on the Standard MedDRA Query (SMQ) narrow search "Drug-related hepatic disorders" will be summarised and clinical biochemistry parameters

    Time frame: 63 days

  7. Clinical laboratory data - Haematology

    Haemoglobin, haematocrit, erythrocytes, platelets, white blood cells, neutrophils, lymphocytes, monocytes, eosinophils, basophils will be summarised over time, as absolute values and changes from baseline with the number of observations, mean, standard deviation, median, quartiles, minimum and maximum. SI units will be used to summarise the data.

    Time frame: 63 days

  8. Clinical laboratory data - Biochemistry

    Total and conjugated bilirubin will be summarised over time, as absolute values and changes from baseline with the number of observations, mean, standard deviation, median, quartiles, minimum and maximum. SI units will be used to summarise the data.

    Time frame: 63 days

  9. Clinical laboratory data - Liver Enzymes

    Alanine aminotransaminase (ALT), Aspartate aminotransaminase (AST), Alkaline Phosphatase will be summarised over time, as absolute values and changes from baseline with the number of observations, mean, standard deviation, median, quartiles, minimum and maximum. IU/L units will be used to summarise the data

    Time frame: 63 days

  10. Clinical laboratory data - Liver Enzyme Elevations

    The number (%) of participants with liver enzyme elevations after first drug administration as defined below will be summarised. * ALT or AST \> 3 x Upper Limit of Normal (ULN) * ALT or AST \> 5 x ULN * ALT or AST \> 8 x ULN * ALT or AST \> 3 x ULN and bilirubin \> 2 x ULN at the same time point (when conjugated bilirubin fraction is missing) * ALT or AST \> 3 x ULN and bilirubin \> 2 x ULN, together with a conjugated bilirubin fraction \>35% (Potential Hy's law cases), at the same time point

    Time frame: 63 days

  11. Vital signs - Blood pressure

    Supine systolic and diastolic blood pressure (mm Hg) absolute values and changes from baseline will be summarised by time point with the number of observations, mean, standard deviation, median, minimum and maximum, and quartiles

    Time frame: 63 days

  12. Vital signs - Pulse rate

    Pulse rate (bpm) absolute values and changes from baseline will be summarised by time point with the number of observations, mean, standard deviation, median, minimum and maximum, and quartiles

    Time frame: 63 days

  13. Vital signs - Temperature

    Temperature (degrees Celsius) absolute values and changes from baseline will be summarised by time point with the number of observations, mean, standard deviation, median, minimum and maximum, and quartiles

    Time frame: 63 days

Other outcomes

  1. Parasite free by qPCR quantification

    To estimate the proportion of participants who are parasite free by qPCR quantification.

    Time frame: 63 days

  2. PCR-adjusted APR by qPCR

    To estimate PCR-adjusted APR by qPCR.To estimate PCR-unadjusted APR by qPCR. To estimate the rate of recurrent infections, recrudescences and new infections by qPCR until Day 63 (post first dose) by KM analysis.

    Time frame: 63 days

  3. Percentage change in gametocytaemia.

    In participants with positive detection of gametocytes by reverse transcriptase (RT)-PCR at baseline, to evaluate percentage reduction in gametocytaemia.

    Time frame: 63 days

  4. AUC of gametocytaemia by RT-PCR

    To estimate area under the curve (AUC) up to Day 14 of gametocytaemia by RT-PCR, in participants with positive RT-PCR at baseline and separately in participants with negative RT-PCR at baseline

    Time frame: 14 days

  5. Relationship between artesunate and pyronaridine concentration and efficacy

    To explore the relationship between artesunate and pyronaridine concentration and efficacy (PCR-adjusted APR at Day 28, based on slide assessment by microscopy)

    Time frame: 28 days

07

Study locations

2 sites
  • MRC Unit The Gambia at the London School of Hygiene and Tropical Medicine,
    Fajara,, Banjul,, Gambia
  • Tropical Diseases Research Centre
    Ndola, Zambia
08

References and documents

Publications

  • Dabira ED, Hachizovu S, Conteh B, Mendy A, Nyang H, Lawal B, Ndiath MO, Mulenga JM, Mwanza S, Borghini-Fuhrer I, Arbe-Barnes S, Miller R, Shin J, Duparc S, D'Alessandro U, Manyando C, Achan J. Efficacy, Safety and Tolerability of Pyronaridine-artesunate in Asymptomatic Malaria-infected Individuals: a Randomized Controlled Trial. Clin Infect Dis. 2022 Jan 29;74(2):180-188. doi: 10.1093/cid/ciab425. PubMed 33983371 ↗

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 30, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03814616
Collaborators
Medicines for Malaria Venture
Responsible party
Sponsor
First posted
Jan 24, 2019
Start date
Oct 3, 2018
Primary completion
Oct 2019 (estimated)
Completion
Oct 2019 (estimated)
Last update
Sep 30, 2019

Study contacts

Jang Sik Shin
study director · Shin Poong

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Artesunate

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