title: Efficacy of three artemisinin combination therapies for the treatment of uncomplicated Plasmodium falciparum malaria in the Republic of Congo.
abstract: BACKGROUND
  Presented here are the results of a comparative trial on the efficacy of three artemisinin-based combinations conducted from May to October 2004, in Pool Province, Republic of Congo.
  
  
  METHODS
  The main outcome was the proportion of cases of true treatment success at day 28. Recrudescences were distinguished from re-infections by PCR analysis. A total of 298 children of 6-59 months were randomized to receive either artesunate + SP (AS+SP), artesunate + amodiaquine (AS+AQ) or artemether + lumefantrine (AL), of which 15 (5%) were lost to follow-up.
  
  
  RESULTS
  After 28 days, there were 21/85 (25%) recurrent parasitaemias in the AS+SP group, 31/97 (32%) in the AS+AQ group and 13/100 (13%) in the AL group. The 28-day PCR-corrected cure rate was 90.1% [95% CI 80.7-95.9] for AS+SP, 98.5% [95% CI 92.0-100] for AS+AQ and 100% [95.8-100] for AL, thereby revealing a weaker response to AS+SP than to AL (p = 0.003) and to AS+AQ (p = 0.06). A potential bias was the fact that children treated with AL were slightly older and in better clinical condition, but logistic regression did not identify these as relevant factors. There was no significant difference between groups in fever and parasite clearance time, improvement of anaemia and gametocyte carriage at day 28. No serious adverse events were reported.
  
  
  CONCLUSIONS
  Considering the higher efficacy of AL as compared to AS+SP and the relatively high proportion of cases with re-infections in the AS+AQ group, we conclude that AL is clinically more effective than AS+SP and AS+AQ in this area of the Republic of Congo. Implementation of the recently chosen new national first-line AS+AQ should be monitored closely.
authors.affiliation: Médecins sans Frontières, London, UK. ingrid.van.den.broek@rivm.nl <ingrid.van.den.broek@rivm.nl>
authors.forename: Ingrid
authors.initials: I
authors.lastname: van den Broek
authors.forename: Christa
authors.initials: C
authors.lastname: Kitz
authors.forename: Sarwatt
authors.initials: S
authors.lastname: Al Attas
authors.forename: François
authors.initials: F
authors.lastname: Libama
authors.forename: Manica
authors.initials: M
authors.lastname: Balasegaram
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Guthmann
mesh_terms: D000655:Amodiaquine / Q000008:administration & dosage / Q000627:therapeutic use; D000818:Animals; D000962:Antimalarials / Q000008:administration & dosage / Q000627:therapeutic use*; D000077549:Artemether; D037621:Artemisinins / Q000008:administration & dosage / Q000627:therapeutic use*; D000077332:Artesunate; D002675:Child, Preschool; D015023:Democratic Republic of the Congo; D004359:Drug Therapy, Combination; D004983:Ethanolamines / Q000008:administration & dosage / Q000627:therapeutic use; D005260:Female; D005449:Fluorenes / Q000008:administration & dosage / Q000627:therapeutic use; D006801:Humans; D007223:Infant; D000078102:Lumefantrine; D016778:Malaria, Falciparum / Q000188:drug therapy*; D008297:Male; D010963:Plasmodium falciparum / Q000187:drug effects*; D012717:Sesquiterpenes / Q000008:administration & dosage / Q000627:therapeutic use; D016896:Treatment Outcome
chemical_list: D000962:Antimalarials; D037621:Artemisinins; D004983:Ethanolamines; D005449:Fluorenes; D012717:Sesquiterpenes; D000655:Amodiaquine; D000077332:Artesunate; D000077549:Artemether; D000078102:Lumefantrine