In human beings, tafenoquine demonstrates an elimination halflife of 14 days and in a Phase II anti-relapse clinical study showed equal or better anti-relapse efficacy from a single 300 mg dose than 14 days of 15 mg primaquine.38 The compound is in Phase III clinical trials with GSK and Medicines for Malaria Ventures (MMV) and remains the next-generation 8-aminoquinoline,
overcoming all compliance issues with a singledose therapy. Finally, the pharmacokinetic profile of tafenoquine is such that a future triple combination with other potential single-dose combinations currently in clinical studies could potentially yield the first single exposure radical cure and prophylaxis or SERCAP.39