CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 600 enrolled
Drug / intervention
Tafenoquine +1 moredrug
Likely dose
Tafenoquine 200mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03320174
NCT03320174Phase 2Completed

Single Site, Randomized, Double Blind, Placebo-Controlled Study to Assess the Long-Term Safety of Tafenoquine

60 Degrees Pharmaceuticals LLC·interventional·Posted Oct 25, 2017·Updated Apr 17, 2026

In Brief

A Phase 2 clinical trial evaluating Tafenoquine and Placebo for Healthy Volunteers. Completed, enrolled 600 participants across 3 sites in 2 countries.

Detailed Summary

This randomized, double-blind, placebo controlled study will involve 600 healthy (Glucose-6-Phosphate Dehydrogenase \[G6PD\] normal) volunteers. Participants who meet the eligibility criteria will be randomized (ratio 1:1) to receive a loading dose of either tafenoquine 200 mg (2 x 100 mg tablets) or placebo daily for three consecutive days, followed by study treatment (tafenoquine 200 mg or placebo) once per week for 51 weeks, with safety follow-up visits at Weeks 4, 12, 24, and 52. All participants will return to the clinic at Week 64 for an end of study visit. If the participant has an ongoing AE at the Week 64 visit will continue to be assessed for up to 3 more times at approximately 12-week intervals or until resolution or stabilization of the AE whichever is earlier.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesAustralia, United States
Collaborators--

Timeline

Phase 2CompletedFinished
201820192020202120222023202420252026
First PostedOct 25, 2017
Enrollment StartOct 5, 2017
Primary CompletionJul 13, 2021
TodayJul 2, 2026
Enrollment to primary: 3.8 yearsPosted 8.7 years ago

Interventions

Tafenoquinedrug

Tafenoquine 200mg

Placeboother

Placebo