COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH: Menu

Chloroquine and Amodiaquine for Treatment of Malaria in Children

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00137514
Recruitment Status : Completed
First Posted : August 30, 2005
Last Update Posted : April 8, 2008
Information provided by:
Bandim Health Project

Brief Summary:
This study will evaluate the efficacy of the treatment recommended by the National Malaria Programme in Guinea-Bissau as compared to a higher dose of chloroquine and to another anti-malarial drug, amodiaquine. The genetic basis of the parasites for developing resistance will be examined. Children coming to Bandim Health Centre with symptoms of malaria and a positive malaria test will be included. The children will be visited and malaria films will be obtained weekly until day 35. In case of a reappearance of parasites the children will be re-treated with sulfadoxine/pyrimethamine.

Condition or disease Intervention/treatment Phase
Malaria, Falciparum Drug: chloroquine Drug: amodiaquine Phase 4

Detailed Description:

This study compares treatment of uncomplicated malaria in children in Guinea-Bissau as recommended by the national malaria programme (chloroquine in a total dose of 25 mg/kg), either with a total dose of 50 mg/kg chloroquine or with a total dose of 15 or 30 mg of amodiaquine. As both annual in vitro studies (from 1992 to 2004 except 1998, 1999) and several in-vivo studies from Guinea-Bissau indicate a fairly stable chloroquine resistance prevalence, another aim of this study is to evaluate the genetic basis of chloroquine resistance in Guinea-Bissau by analyzing specific single nucleotide polymorphisms in pfcrt and pfmdr1 in blood samples from this in vivo trial.

Following consent to participate, children visiting the Bandim Health Centre on the outskirts of Bissau with mono-infection with Plasmodium falciparum are by block-randomization allocated to one of the four different treatment groups. The treatment is given supervised by one of the health workers. The children are visited and malaria films obtained on day 2 and day 7 and then once weekly until day 35. On day seven, 100 microliters of capillary blood are drawn for analyses of chloroquine or amodiaquine concentrations in whole blood. Whenever a child has recurrent parasitaemia, a filter-paper blood-sample is collected for later PCR analysis.

If parasites reappear in 50% or more of at least 40 children in one of the treatment groups this treatment arm should be terminated. During the study parents are recommended to bring the child to Bandim Health Centre in case of any illness. Participating children will be examined and treated free of charge. Following the recommendations of the national Malaria Programme sulfadoxine/pyrimethamine will be used for re-treatment of children in case of recrudescence.

The results from this study could be used when giving the needed new recommendations for treatment of malaria in Guinea-Bissau. If still effective mono-therapy with a higher dose of chloroquine could be used until the introduction of a better treatment is possible. When artemisinine combination therapy is going to be introduced in Guinea-Bissau the results could be helpful in deciding if amodiaquine should be considered as the partner drug - and in which dose.

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Enrollment : 720 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Chloroquine and Amodiaquine for Treatment of Symptomatic Children With Plasmodium Malaria in Guinea-Bissau
Study Start Date : March 2001
Actual Primary Completion Date : May 2004
Actual Study Completion Date : May 2004

Primary Outcome Measures :
  1. Parasite reappearance rate
  2. hospitalization during follow-up

Secondary Outcome Measures :
  1. Genetic markers in parasites
  2. recrudescence rate
  3. re-infection rate

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   up to 15 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients < 15 years of age presenting at Bandim Health Centre
  • Symptoms suggestive of malaria
  • At least 20 P. falciparum parasites per 200 leukocytes in a thick film
  • Live in Bandim (to enable follow-up)

Exclusion Criteria:

  • Severely ill children considered needing the services of a hospital by the medical doctor in charge
  • Stated medication with other antimalarials within one week prior to treatment
  • Previous idiosyncratic reactions to any of the study drugs

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00137514

Layout table for location information
Bandim Health Project
Apartado 861, Bissau, Guinea-Bissau
Sponsors and Collaborators
Bandim Health Project
Layout table for investigator information
Study Director: Peter Aaby Bandim Health Project
Publications automatically indexed to this study by Identifier (NCT Number):
Layout table for additonal information Identifier: NCT00137514    
Other Study ID Numbers: PSB-2001-chl-amo
2004-126 (SAREC).
First Posted: August 30, 2005    Key Record Dates
Last Update Posted: April 8, 2008
Last Verified: April 2008
Keywords provided by Bandim Health Project:
Plasmodium falciparum
Additional relevant MeSH terms:
Layout table for MeSH terms
Malaria, Falciparum
Protozoan Infections
Parasitic Diseases
Antiprotozoal Agents
Antiparasitic Agents
Anti-Infective Agents
Antirheumatic Agents