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Evaluating the Efficacy of Artesunate-mefloquine and the Relative Roles of Resistance Genetic Markers

Information source: University of Oxford
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: P. Falciparum Malaria; P. Falciparum Malaria Mixed Infection

Phase: N/A

Status: Not yet recruiting

Sponsored by: University of Oxford

Overall contact:
Aung Pyae Phyo, MD, Phone: +66 55 545021, Email: aung.phyo@ndm.ox.ac.uk


This is a retrospective non randomized cohort to evaluate efficacy of MAS3 on patients with uncomplicated P. falciparum malaria or mixed infection (P. falciparum + a non-falciparum species). The review of patients' records and blood samples will be performed for patients treated at the clinics of Shoklo Malaria Research Unit from the period of January 2003 to December 2013.

Clinical Details

Official title: Evaluating the Efficacy of Artesunate-mefloquine on the Thai-Myanmar Border and the Relative Roles of Resistance Genetic Markers: A Retrospective Cohort Study

Study design: Observational Model: Cohort, Time Perspective: Retrospective

Primary outcome: proportion of patients with clearance of asexual parasitaemia within 7 days of initiation of trial treatment

Secondary outcome:

Proportion of aparasitaemic patients


haematocrit change

Prevalence and temporal trend of resistance molecular markers

Detailed description: The objective of this study is to evaluate the Day 42 PCR adjusted cure rate of mefloquine-artesunate (MAS3) in patients with P. falciparum Study procedure Clinic and patient records and log books will be reviewed and the following clinical information will be extracted: vital signs especially the temperature, clinical signs and symptoms, blood slide and haematocrit result and findings of physical examination (anaemia, jaundice, liver, spleen etc). As a routine, these data were recorded on the clinic patient record and malaria smear microscopy logbook accordingly (which will be regarded as the source documents in this analysis). These source documents will be reviewed and stored specimen will be analysed after getting the permission from the Director of Shoklo Malaria Research Unit, the University of Oxford Tropical Research Ethical Committee (OxTREC)and the Faculty of Tropical Medicine Ethics Committee (FTMEC). These data will be extracted and transcribed into the case record forms and entered into Microsoft access. During the data extraction, the unique ID will be assigned to each patient whereas the patients' name will neither be entered into database nor disclosed in the analysis process (ie: the data will be anonymised).


Minimum age: N/A. Maximum age: N/A. Gender(s): Both.


Inclusion Criteria:

- Patients of any age and sex who received treatment for uncomplicated malaria and

followed up between January 2003 to December 2013

- Symptomatic of malaria infection, i. e. history of fever or tympanic temperature

≥37. 5°c

- Microscopically confirmed asexual stages of P. falciparum ≥ 5/500 WBC (alone or

mixed with non- P. falciparum species)

- Received fully supervised treatment of mefloquine-artesunate

Exclusion Criteria:

- Pregnant woman

- P. falciparum asexual stage parasitaemia greater than or equal to 4% red blood cells

Signs or symptoms indicative of severe malaria29

- Mefloquine treatment within the 60 days preceding the current episode of malaria

- Splenectomy

Patients will be excluded from the efficacy analysis if they didn't finish the 3 days treatment of mefloquine artesunate but still kept in intention-to-treat population.

Locations and Contacts

Aung Pyae Phyo, MD, Phone: +66 55 545021, Email: aung.phyo@ndm.ox.ac.uk

Additional Information

Starting date: May 2015
Last updated: April 27, 2015

Page last updated: August 23, 2015

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