Malaria, FalciparumPhase 2/3NCT00084227
Azithromycin Plus Chloroquine Versus Atovaquone-Proguanil For The Treatment Of Uncomplicated Plasmodium Falciparum Malaria In South America
A Phase 2/3 study testing Azithromycin/Chloroquine and Atovaquone/Proguanil in people with Malaria, Falciparum, run by Pfizer.
Trial summary
The primary objective is to confirm the hypothesis that azithromycin plus chloroquine is non-inferior to atovaquone-proguanil for the treatment of symptomatic, uncomplicated malaria due to P. falciparum. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Malaria, Falciparum
- What is being tested?
- Azithromycin/Chloroquine and Atovaquone/Proguanil
- How many people
- 244 participants
- Where
- No sites listed yet
- Study dates
- Jul 2004to Jul 2005
- Phase
- Phase 2/3
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Written informed consent of the subject or a legally authorized representative
- Females and males >= 18 years of age with uncomplicated, symptomatic malaria as indicated by the presence of both of the following: a.) Blood smears positive for Plasmodium falciparum asexual parasitemia between 1000 - 40,000 parasites/mL; b.) Fever or history of fever (>= 38.5 C/101.2 F rectal or tympanic; >= 37.5 C/99.5 F axillary or >= 38 C/100.4 F oral) within the prior 24 hours
- Serum glucose >= 60 mg/dL (by fingerstick or peripheral blood collection)
- Positive rapid diagnostic test (Binax NOW ICT) positive for P. falciparum
- Subjects must be willing to be treated in the inpatient setting for a minimum of three days or more until parasitemia has cleared and the Investigator deems the subject fit for discharge
- Women of childbearing potential (that is, women who have not been surgically sterilized or are not clearly post-menopausal), must have a negative urine gonadotropin prior to entry into the study and must agree to use adequate contraception during the entire study and for one month after the last study visit
Who cannot join
- Severe or complicated malaria including subjects with any of the following: a.) Impaired consciousness (e.g. obtundation, unarousable coma, delirium, stupor), seizures (any seizure within a 24 hour prior to enrollment) or abnormal neurologic exam suggestive of severe or complicated malaria b.) Hemoglobinuria c.) Jaundice d.) Respiratory distress (respiratory rate ≥ 30 breaths/minute) e.) Persistent vomiting f.) Hematuria, as reported by the patient
- Pregnant or breast-feeding women
- History of allergy to or hypersensitivity to azithromycin or any macrolide, atovaquone, proguanil or chloroquine
- Concomitant administration of rifampin or rifabutin and metoclopramide
- History of epilepsy or psoriasis
- History of treatment with any antimalarial drug (chloroquine, quinine, mefloquine, atovaquone/proguanil, sulfadoxine/pyrimethamine, artemisinin compounds) or antibacterial with known antimalarial activity (macrolides, doxycycline, clindamycin) within 2 weeks prior to enrollment into the study
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- Known or suspected cardiovascular, hepatic or renal abnormality that in the opinion of the Investigator would place the subject at increased risk to participate in the study. The following findings are specific exclusions: a.) Known or suspected creatinine clearance <30 mL/min b.) ALT and/or AST > 3 x upper limit of normal
- Inability to swallow oral medication in tablet or capsule form
- Treatment with other investigational drugs within 30 days prior to enrollment into the study
- Alcohol and/or any other drug abuse
- Requirement to use medication during the study that might interfere with the evaluation of the study drug
- Specific systemic diseases or other medical conditions that would interfere with the evaluation of the therapeutic response or safety of the study drug
- Inability to comprehend and/or unwillingness follow to the study protocol
- Prior participation in this study
About this study
Official title: A Phase Ii/Iii, Randomized, Double Blind, Comparative Trial Of Azithromycin Plus Chloroquine Versus Atovaquone-Proguanil For The Treatment Of Uncomplicated Plasmodium Falciparum Malaria In South America
The primary objective is to confirm the hypothesis that azithromycin plus chloroquine is non-inferior to atovaquone-proguanil for the treatment of symptomatic, uncomplicated malaria due to P. falciparum.
- Conditions
- Malaria, Falciparum
- Being tested
- Azithromycin/Chloroquine, Atovaquone/Proguanil
- Medical subject headings
- Malaria, Falciparum
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Azithromycin/ChloroquineDrug
Atovaquone/ProguanilDrug
What is being measured
The primary outcome is the main question the study is designed to answer.
parasite clearance
Secondary outcomes (1)
tolerability and safety
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Jun 2004 (estimated)
- Study startJul 2004
- Study completionJul 2005
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Malaria, FalciparumStudies of the same condition, open and under way.
- More trials run by PfizerThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2/3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Enrolment
- 244 participants (actual)
Sponsor and investigators
- Lead sponsor
- Pfizer
- Sponsor type
- Industry (pharma, biotech, devices)
- Investigators
- Pfizer CT.gov Call Center, Study director, Pfizer
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00084227
- Sponsor's protocol ID
- A0661126
- Status last verified
- May 2011
- First submitted
- 9 Jun 2004
- Last updated
- 11 May 2011
- Results posted
- No
Study at a glance
From the registry record, last updated by the sponsor on 11 May 2011. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase Ii/Iii, Randomized, Double Blind, Comparative Trial Of Azithromycin Plus Chloroquine Versus Atovaquone-Proguanil For The Treatment Of Uncomplicated Plasmodium Falciparum Malaria In South America
- ClinicalTrials.gov ID
- NCT00084227
- Acronym / sponsor ID
- A0661126
- Conditions
- Malaria, Falciparum
- Phase
- Phase 2/3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 244 participants (actual)
- Lead sponsor
- PfizerIndustry (pharma, biotech, devices)
- Study start
- Jul 2004
- Study completion
- Jul 2005 (actual)
- First posted
- 11 Jun 2004 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The primary objective is to confirm the hypothesis that azithromycin plus chloroquine is non-inferior to atovaquone-proguanil for the treatment of symptomatic, uncomplicated malaria due to P. falciparum.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Written informed consent of the subject or a legally authorized representative
- Females and males >= 18 years of age with uncomplicated, symptomatic malaria as indicated by the presence of both of the following: a.) Blood smears positive for Plasmodium falciparum asexual parasitemia between 1000 - 40,000 parasites/mL; b.) Fever or history of fever (>= 38.5 C/101.2 F rectal or tympanic; >= 37.5 C/99.5 F axillary or >= 38 C/100.4 F oral) within the prior 24 hours
- Serum glucose >= 60 mg/dL (by fingerstick or peripheral blood collection)
- Positive rapid diagnostic test (Binax NOW ICT) positive for P. falciparum
- Subjects must be willing to be treated in the inpatient setting for a minimum of three days or more until parasitemia has cleared and the Investigator deems the subject fit for discharge
Key exclusion criteria (14 listed)
- Severe or complicated malaria including subjects with any of the following: a.) Impaired consciousness (e.g. obtundation, unarousable coma, delirium, stupor), seizures (any seizure within a 24 hour prior to enrollment) or abnormal neurologic exam suggestive of severe or complicated malaria b.) Hemoglobinuria c.) Jaundice d.) Respiratory distress (respiratory rate ≥ 30 breaths/minute) e.) Persistent vomiting f.) Hematuria, as reported by the patient
- Pregnant or breast-feeding women
- History of allergy to or hypersensitivity to azithromycin or any macrolide, atovaquone, proguanil or chloroquine
- Concomitant administration of rifampin or rifabutin and metoclopramide
- History of epilepsy or psoriasis
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Azithromycin/Chloroquine | Drug | – |
| Atovaquone/Proguanil | Drug | – |
Primary outcome
parasite clearance
1 secondary outcome
tolerability and safety
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 11 May 2011.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Pfizer CT.gov Call Center study director
Pfizer
Questions about this trial
What is this clinical trial studying?
A Phase 2/3 study testing Azithromycin/Chloroquine and Atovaquone/Proguanil in people with Malaria, Falciparum, run by Pfizer.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 14 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 11 May 2011. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
parasite clearance. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 May 2011; AzTrials last refreshed its copy on 8 Nov 2026.