TY - BOOK AU - Hussaini, Azra TI - Randomized Placebo-Controlled Trial Evaluating the Ophthalmic Safety of Single-Dose Tafenoquine in Healthy Volunteers SN - 0114-5916 PY - 2019/// KW - *Aminoquinolines/ad [Administration & Dosage] KW - *Antimalarials/ad [Administration & Dosage] KW - *Retina/de [Drug Effects] KW - *Visual Acuity/de [Drug Effects] KW - Administration, Oral KW - Adolescent KW - Adult KW - Aminoquinolines/ae [Adverse Effects] KW - Antimalarials/ae [Adverse Effects] KW - Female KW - Humans KW - Male KW - Middle Aged KW - Optical Imaging KW - Prospective Studies KW - Single-Blind Method KW - Tomography, Optical Coherence KW - Young Adult KW - MedStar Harbor Hospital KW - PAREXEL Early Phase Clinical Unit KW - Journal Article N2 - CONCLUSION: There was no evidence of any pharmacodynamic effect of 300-mg single-dose tafenoquine on the retina or any short-term clinically relevant effects on ophthalmic safety. This clinical trial is registered with ClinicalTrials.gov (identifier: NCT02658435); INTRODUCTION: Tafenoquine has been recently registered for the prevention of relapse in Plasmodium vivax malaria; METHODS: This phase I, prospective, multicenter, randomized, single-masked, placebo-controlled, parallel-group study was conducted between 2 February 2016 and 14 September 2017 at three US study centers. Adult healthy volunteers were randomized (2:1) to receive either a single 300-mg oral dose of tafenoquine or matched placebo on day 1. Ophthalmic assessments, including spectral domain optical coherence tomography (SD-OCT) and fundus autofluorescence (FAF), were conducted at baseline and day 90 and evaluated for pre-determined endpoints by an independent, masked reading center; OBJECTIVE: This study assessed the pharmacodynamic effects of 300-mg single-dose tafenoquine on the retina; RESULTS: One subject in each group met the composite primary endpoint for retinal changes identified with SD-OCT or FAF, i.e., one out of 306 (0.3%) with tafenoquine, one out of 161 (0.6%) with placebo. Both cases had unilateral focal ellipsoid zone disruption at day 90 with no effect on best-corrected visual acuity. The tafenoquine-treated subject had this abnormality at baseline, and was enrolled in error. There was no difference in ophthalmic safety between tafenoquine and placebo UR - https://dx.doi.org/10.1007/s40264-019-00839-w ER -