Preparing for next-generation PrEP: awareness and willingness to use long-acting injectable cabotegravir among men who have sex with men and trans women across Asia.

BACKGROUND: Pre-exposure prophylaxis (PrEP) use could be accelerated by offering alternatives that overcome key barriers associated with oral PrEP. This study aimed to understand willingness and preferences for long-acting injectable cabotegravir (CAB-LA) among gay men and other men who have sex with men (MSM), and transgender women (TGW) in Asia.

METHODS: An online cross-sectional survey was conducted from May to November 2022 among HIV-negative or unknown status MSM and TGW aged ≥18 years across 15 and 11 Asian countries/territories, respectively. Survey items included awareness and use of PrEP and CAB-LA, willingness to use current and emerging PrEP options, and attitudes towards CAB-LA. Descriptive statistics and logistic regression were used to analyse associations with willingness to use CAB-LA.

RESULTS: Among 11,870 MSM and 980 TGW, 21.4% (n = 2448) and 32.5% (n = 295) were aware of CAB-LA, respectively, and 17.2% (n = 2036) and 16.8% (n = 165) were willing to use it. CAB-LA was the most preferred PrEP option for 3.6% (n = 400) of MSM and 6.5% (n = 61) of TGW. Awareness and willingness varied across countries/territories and populations. Key benefits of CAB-LA included HIV protection (57.8% MSM, 46.8% TGW), no need for daily pills (42.6% MSM, 31.1% TGW) and longer-term protection (38.0% MSM, 23.6% TGW). Main concerns included cost (39.6% MSM, 22.1% TGW), side-effects (37.5% MSM, 22.2% TGW), insufficient knowledge (33.3% MSM, 20.6% TGW) and pain (21.4% MSM, 24.9% TGW).

CONCLUSIONS: Successful introduction of CAB-LA, or other new long-acting injectable PrEP options, in Asia will require strategies to raise awareness and demand-generation that responds to the perceived benefits and concerns of communities.