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Since October, clinical research teams around the UK have been busy prescribing Truvada as HIV pre-exposure prophylaxis (PrEP) for participants in the PROUD study who were originally randomised to defer at the time of enrolment. At the time of writing, we have a press release reporting that PrEP is highly protective against HIV: protective enough to amend the protocol and offer PrEP immediately to all participants.1 By the time this round-up is published, it is likely that the interim results will be in the public domain. The trial was originally set up as a pilot with the assumption that the sample size of 545 might be too small to see a difference between arms. That the trial is being amended early means one or both of two things: that the participants were at higher risk of HIV than anticipated and that the group randomised to immediate PrEP were more adherent, perhaps more committed, than participants in previous PrEP trials.
It now seems that the question is not if but when PrEP will reach our formularies. …
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