A Randomized, Double-Blind, Safety and Tolerability Study to Assess the Ophthalmic and Renal Effects of Tafenoquine 200 mg Weekly versus Placebo for 6 Months in Healthy Volunteers

Kevin J. Leary United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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Michael A. Riel United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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Michael J. Roy United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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Louis R. Cantilena United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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Daoqin Bi United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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D. Craig Brater United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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Corina van de Pol United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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Khadeeja Pruett United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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Caron Kerr United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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James M. Veazey Jr United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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Ronnie Beboso United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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Colin Ohrt United States Army Medical Materiel Development Activity, Fort Detrick, Maryland; Uniformed Services University of the Health Sciences, Bethesda, Maryland; Indiana University School of Medicine, Indianapolis, Indiana; Acufocus, Inc., Irvine, California; GlaxoSmithKline Research and Development, Greenford, Middlesex, United Kingdom; Chiltern International Ltd., Early Phase Unit, Slough, Berkshire, United Kingdom; Walter Reed Army Institute of Research, Silver Spring, Maryland

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A randomized, double-blind, placebo-controlled study was conducted to assess the effect of tafenoquine, 200 mg weekly for 6 months on ophthalmic and renal safety. This trial was carried out after observations in previous clinical trials that tafenoquine may be associated with the development of corneal deposits and elevations in serum creatinine. In 120 healthy volunteers who received tafenoquine or placebo in a 2:1 randomization, there was no effect on night vision or other ophthalmic indices measured. Persons taking tafenoquine also showed no difference in mean change in glomerular filtration rate (GFR, mL/s/1.73 m2) after 6 months of dosing, with a treatment difference of −0.061 (95% confidence interval, −0.168, 0.045), and non-inferiority margin of −0.247 mL/s/1.73 m2. Tafenoquine was well tolerated over the course of the study. The results of this study showed no clinically significant effects of tafenoquine on ophthalmic or renal function, and support its continued development as an antimalarial drug.

Author Notes

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