RT Journal Article SR Electronic T1 Pre-exposure prophylaxis (PrEP) for men who have sex with men in Europe: review of evidence for a much needed prevention tool JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 363 OP 367 DO 10.1136/sextrans-2016-052699 VO 93 IS 5 A1 Thijs Reyniers A1 Elske Hoornenborg A1 Bea Vuylsteke A1 Kristien Wouters A1 Marie Laga YR 2017 UL http://sti.bmj.com/content/93/5/363.abstract AB In many Western countries with good coverage of antiretroviral treatment (ART) programmes the annual number of HIV infections is still high and not (yet) declining among men who have sex with men (MSM). This might indicate that antiretroviral treatment roll-out alone will not turn around the course of the epidemic and that new, additional tools are needed. Antiretrovirals used as prevention tools for people not yet infected with HIV, such as pre-exposure prophylaxis (PrEP) could be such important additional tools. PrEP is a new type of biomedical prevention, which involves the use of antiretrovirals before, during and after (periods of) sexual exposure to HIV. In this review, we will focus on PrEP as a new prevention tool for MSM at high risk in Europe, including its evidence for effectiveness, challenges for implementation, ongoing European demonstration studies; as well as how PrEP relates to other existing prevention tools. In light of European Medicines Agency's recent recommendation for approval of PrEP we briefly review the potential implications.