Trial no.:
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PACTR202401827533382 |
Date of Approval:
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12/01/2024 |
Trial Status:
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Retrospective registration - This trial was registered after enrolment of the first participant |
|
TRIAL DESCRIPTION |
Public title
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Evaluation and survey of malaria chemoprevention drug resistance in infant from Koutiala, Mali |
Official scientific title |
Monitoring and evaluation of molecular markers drug resistance during seasonal malaria chemoprevention with sulfadoxine-pyrimethamine and amodiaquine implementation in Koutiala, Mali |
Brief summary describing the background
and objectives of the trial
|
In 2012, The World Health Organization (WHO) recommended seasonal malaria chemoprevention (SMC) with sulfadoxine-pyrimethamine and amodiaquine (SP+AQ) in the Sahel countries in Africa to reduce malaria among children under 5 years. This strategy has since been scaled up in the health district of Koutiala, Mali. Our primary observations of this scale-up showed an increasing prevalence of two resistance markers, Plasmodium falciparum dihydropteroate synthase (Pfdhps) 540E and Plasmodium falciparum dihydrofolate reductase (Pfdhfr)-dhps quintuple mutant genotype, in the treated population several months after the last SMC round in 2014. These very high levels of triple, quadruple and quintuple mutants could compromise the effectiveness of SP, but there are no data linking the number of mutations to in vivo resistance against SP+AQ. The use of millions of doses of SP+AQ could potentially generate more highly resistant Plasmodium falciparum mutant parasites. One of the WHO criteria for SMC implementation is >90% efficacy of SP+AQ. In 2016, however, SMC implementation expanded nationally throughout Mali, and WHO has not established a method to monitor the effectiveness of this strategy in a mass campaign. We propose that SMC efficacy could be evaluated by determining parasite clearance, molecular markers, morbidity and mortality in the target population of the health district of Koutiala, Mali. General objective. To evaluate the in vivo efficacy of SP+AQ in the SMC mass campaign among children under 5 years; measure the impact on SMC molecular resistance markers; and assess malaria morbidity and mortality. Specific objectives: 1) measure parasite clearance in treated volunteers; 2) monitor in vivo efficacy of SP+AQ on day 28; 3) determine the prevalence of Plasmodium falciparum mutations in chloroquine resistance transporter (Pfcrt), multidrug resistance transporter 1 (Pfmdr1), Pfdhfr, Pfdhps genes.A total of 10 sentinel sites in Koutiala (Mali) will be needed to recruit. |
Type of trial |
Observational |
Acronym (If the trial has an acronym then please provide) |
SMCDrugR |
Disease(s) or condition(s) being studied |
Infections and Infestations |
Sub-Disease(s) or condition(s) being studied |
Malaria |
Purpose of the trial |
Prevention |
Anticipated trial start date |
01/01/2022 |
Actual trial start date |
01/01/2022 |
Anticipated date of last follow up |
30/10/2022 |
Actual Last follow-up date |
30/12/2022 |
Anticipated target sample size (number of participants) |
1000 |
Actual target sample size (number of participants) |
1000 |
Recruitment status |
Completed |
Publication URL |
in progress |
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