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Background: Drug-resistant Plasmodium falciparum malaria necessitates development of novel drugs for treatment. The present study assessed the efficacy and safety of 3 dose levels of arterolane (RBx 11160), a synthetic trioxolane, for treatment of acute uncomplicated falciparum malaria. Methods: In this randomized, double-blind, multicenter, parallel-group, dose-finding, phase II trial, 230 patients from 4 centers in Thailand, India, and Tanzania (mainland and Zanzibar) received either 50 mg (n=78), 100 mg (n=76), or 200 mg (n=76) of arterolane once daily for 7 days. Patients (aged 13-65 years) with asexual parasite density of 1000-100,000 parasites/muL were included and were followed up for 28 days. The median time to 90% parasite clearance (PC 90) was evaluated. Results: The median PC90 was longer in the group receiving the 50-mg dose (19.4 h), compared with the groups receiving the 100-mg dose (12.8 h) and 200-mg dose (12.6 h) (P < .01). The polymerase chain reaction- corrected adequate clinical and parasitological responses on day 28 were 63%, 71%, and 72% for the groups receiving the 50-mg, 100-mg, and 200-mg doses, respectively, by intention-to-treat analysis (odds ratio, 1.55; 95% confidence interval, 0.78-3.06, for comparison of the 200-mg and 50-mg dose groups). Treatment was generally well tolerated. No patient died or experienced any serious adverse event. Mild complaints were reported in <10% of the patients and were similar in the 3 groups. Biochemistry and hematological analyses did not show any sign of drug toxicity in any patient. Conclusion: Arterolane at daily doses of 100 and 200 mg is a rapidly acting, effective, and safe synthetic antimalarial drug, which may potentially represent an alternative to artemisinin derivatives in antimalarial combination therapy. © 2010 by the Infectious Diseases Society of America. All rights reserved.




N., V., S., L., A., M., S.M., A., S., K., N., T., … A., B. (2010). Arterolane, a new synthetic trioxolane for treatment of uncomplicated Plasmodium falciparum malaria: A phase II, multicenter, randomized, dose-finding clinical trial. Clinical Infectious Diseases, 51(6), 684–691. https://doi.org/http://dx.doi.org/10.1086/655831

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