Running with Scissors: a Systematic Review of Substance Use and the Pre-exposure Prophylaxis Care Continuum Among Sexual Minority Men

Using Structural Equation Modeling to Examine Barriers and Facilitators of HIV Pre-Exposure Prophylaxis Willingness and Length of Use in Men Who Have Sex with Men Who Use Substances in Eight Southern US Cities

Men who have sex with men who use substances (SU-MSM) can benefit from pre-exposure prophylaxis (PrEP) for HIV prevention, especially in Southern US cities where HIV incidence is high; however, uptake remains low. Identifying barriers and facilitators is crucial for developing and implementing strategies to enhance uptake. Few studies of PrEP barriers and facilitators have focused on Southern SU-MSM, and most existing studies have not robustly measured such barriers and facilitators. In this study, 225 SU-MSM were recruited from community STI clinics, syringe services programs, or substance use treatment programs in eight Southern cities. Using structural equation modeling, we examined latent variable constructs of barriers and facilitators (i.e., affordability, burden, risk compensation, side effects, and stigma) and their associations with both willingness to take PrEP and length of PrEP use. Greater concern over affordability was robustly associated with more willingness to take PrEP under a variety of conditions. Risk compensation was associated with greater length of PrEP use, suggesting a major motivator to remain on PrEP was the perceived freedom to forego condoms during sex. Findings advance research on measurement of barriers and facilitators of PrEP willingness and uptake and highlight the importance of addressing affordability in PrEP implementation.

Neighborhood Disadvantage, Syndemic Conditions, and PrEP Non-Adherence in Young Sexual and Gender Minority Men

Adherence to Pre-Exposure Prophylaxis (PrEP) among young sexual and gender minority men who have sex with men (YSGMMSM) has been suboptimal for reducing HIV incidence in the United States. Using the syndemic framework, the present study characterized how neighborhood disadvantage and clustering of two or more syndemic conditions (depression, anxiety, polysubstance use, history of arrest, BIPOC racial identity, unemployment) was related to PrEP non-adherence among 212 YSGMMSM aged 16-24. This study is a secondary analysis of an efficacy trial testing a PrEP adherence digital intervention for YSGMMSM combining participant survey and biological PrEP adherence data with measures of neighborhood disadvantage. Using multilevel models, we found that YSGMMSM residing in high-disadvantage neighborhoods were 2.79 (CI = 1.11, 7.00) times more likely to have a cluster of syndemic conditions compared to those in low-disadvantage neighborhoods. YSGMMSM residing in high-disadvantage neighborhoods were 3.14 (OR = 3.14, CI = 1.17, 8.44) times more likely to be PrEP non-adherent. YSGMMSM with two or more syndemic conditions were 2.64 (CI = 1.01, 6.94) times more likely to be PrEP non-adherent compared to those with 0 or 1 condition. Among participants living in high-disadvantage neighborhoods, 38% had a cluster of a syndemic conditions compared 20% in low-disadvantage neighborhoods. Despite this, neighborhood disadvantage did not significantly moderate the relationship between clustering of syndemic conditions and PrEP non-adherence among YSGMMSM. Further research into multilevel syndemic influences on PrEP adherence is needed to develop strategies for improving HIV vulnerability among YSGMMSM.

Factors Influencing Oral Pre-, Post-, and Doxycycline Post-Exposure Prophylaxis Uptake Among Substance-Using Men Who Have Sex with Men in the Rural Southern US

Substance-using men who have sex with men (MSM), especially those in rural areas, face a heightened risk of HIV and sexually transmitted infections (STIs). Despite increased risk, uptake of HIV pre-exposure prophylaxis (PrEP), HIV post-exposure prophylaxis (PEP), and doxycycline post-exposure prophylaxis (Doxy-PEP) remains low among rural MSM. The multi-domain factors influencing past-year use of oral PrEP, PEP, and Doxy-PEP among substance-using MSM in the rural southern US remain unknown. A cross-sectional study of rural substance-using MSM (n = 345) in the Southern US was conducted from February 29 to March 23, 2024. Three series of bivariate and multivariate logistic regression analyses were conducted. Past-year PrEP use was significantly associated with HIV-negative status (adjusted odds ratio [aOR] = 2.55, 95% confidence interval [CI]: 1.12-5.80, p = 0.025), past-year STI diagnosis (aOR = 2.23, 95% CI: 1.19-4.15, p = 0.012), past-year HIV testing (aOR = 3.40, 95% CI: 1.05-10.9, p = 0.040), and past-year STI testing (aOR = 10.09, 95% CI: 2.25-45.37, p = 0.003). Past-year PEP use was significantly associated with past-year STI diagnosis (aOR = 3.70, 95% CI: 1.33-10.32, p = 0.012) and oral sex (aOR = 0.09, 95% CI: 0.01-0.63, p = 0.015). Finally, past-year Doxy-PEP use was significantly associated with past year-STI diagnosis (aOR = 4.44, 95% CI: 2.03-9.71, p < 0.001). Results underscore the need for integrated care across primary care, pharmacy, and substance use treatment settings to improve screening, education, and prescription of HIV/STI preventative biomedical pharmaceuticals for substance-using MSM.

"Taking Charge and Being Responsible": A Qualitative Study of Meaning Making and Motivations for Preexposure Prophylaxis Adherence Among Gay, Bisexual, and Other Sexual Minoritized Men Engaged in Alcohol Misuse in Kentucky

ABSTRACT

Our qualitative study explores meaning making and motivation for preexposure prophylaxis (PrEP) adherence and engagement among gay, bisexual, and other sexual minoritized men (GBSMM) who misuse alcohol. Nineteen interviews with 10 participants who screened positive for harmful alcohol consumption (Alcohol Use Disorders Identification Test scores > 8) indicated that PrEP meaning making contributes to mental well-being, serving as a stabilizing ritual. Motivation for engagement included a commitment to proactive health management and personal and community safety. In the analysis, meaning making and motivation converged through themes of (a) identity affirmation, (b) accountability for self-care, (c) peace of mind, and (d) agency. Complementary themes included relationship dynamics and strategies for adherence. Participants' alcohol use was also explored, examining its intersections with the themes and understandings of PrEP and social well-being. Recommendations include integrating motivational enhancements into the care continuum to increase PrEP adherence and engagement with clinical care and community support among patients misusing alcohol.

Systematic Review on Chemsex: Advocating for Inclusive Research and Primary Prevention

Chemsex is a specific practice of sexualized drug use (SDU), linked mainly to the group of men who have sex with men (MSM). This practice has become a public health problem due to the increase in sexually transmitted infections and HIV. However, there are groups and aspects that require greater visibility and research. This study aims to (1) analyze whether the majority of existing studies on chemsex focus on MSM and to what extent studies have addressed other sexual orientations and gender identities; and (2) determine the characteristics and effectiveness of interventions implemented for the prevention and risk reduction associated with chemsex, excluding pre- and post-exposure prophylaxis for HIV. Following PRISMA recommendations, a systematic review was conducted in the Cochrane Library, PubMed/MEDLINE, Scopus and Web of Science databases between April and July 2024. The results were synthesized using a narrative approach and the methodological quality was evaluated of the studies included with the Mixed Methods Appraisal Tool (MMAT) instrument. The first search identified 1314 studies, 14 of them being relevant. The studies analyzed the presence of chemsex and SDU in diverse samples regarding sexual orientation and gender identity. They were plural and addressed multiple aspects that constitute the phenomenon of chemsex. The second search yielded 1985 studies, of which two met the inclusion criteria. No primary or secondary prevention interventions were recorded; however, risk prevention interventions were documented. These interventions demonstrated reductions in chemsex practices, engagement in unsafe sexual behaviors, and substance use. Chemsex reflects complex dynamics within sexually minoritized groups, influenced by gender, sexual orientation, and the collective's inherent insecurities. While risk reduction programs exist, there is a notable lack of primary prevention interventions. Expanding research to include diverse populations and developing inclusive strategies to address this phenomenon is crucial.

The Impacts of Substance Use and Depression on HIV Pre-Exposure Prophylaxis Use and Adherence Among Sexual and Gender Minority Adolescents and Young Adults in the Keeping it LITE Cohort

Substance use and depression are prevalent in sexual and gender minorities (SGM), but evidence about their impacts on HIV pre-exposure prophylaxis (PrEP) use is mixed. We assessed these impacts in a US-based cohort of 3,330 young SGM who tested negative for HIV and completed baseline and semiannual assessments on substance use (cocaine, methamphetamine, or heroin), depression, and PrEP use and adherence. We estimated prevalence differences (PDs) to compare baseline and 12-month PrEP use and adherence between participants with and without substance use and depression, separately and jointly. At baseline, 8% of participants reported substance use and depression, 7% reported substance use only, 38% reported depression only, and 47% reported neither. PrEP use was reported by 22%, with 78% reporting prior-day adherence. Compared to participants without depression or substance use, participants with substance use alone were more likely to report PrEP use at baseline (PD = 18.9; 95% CI: 7.6, 30.2) and 12 months (PD = 15.9, 95% CI: 5.1, 26.7), without adherence differences. Depression alone was associated with lower baseline PrEP use (PD=-3.6, 95% CI: -6.7, -0.4) and adherence (PD=-10.0, 95% CI: -18.4, -1.6), but associations attenuated over 12 months. Those with both substance use and depression (vs. neither) reported higher baseline PrEP use (PD = 6.5, 95% CI: -0.6, 13.5) and lower adherence (PD=-12.9, 95% CI: -26.2, 0.5), with associations weakening over 12 months. Substance use and depression had opposing relationships with PrEP use and adherence. In addition to its mental health benefits, depression treatment may improve PrEP uptake and adherence in young SGM.

Estimating Substance Use Homophily in the Sexual Network of a Large Cohort of Young Sexual and Gender Minorities Assigned Male at Birth

Young sexual and gender minority (SGM) people assigned male at birth who use substances are at elevated risk of HIV acquisition. This brief report leverages a large cohort of SGM people assigned male at birth to estimate substance use homophily (i.e., same-same substance use status) in sexual partnerships. We found substance use homophily in this sexual network for marijuana, poppers, methamphetamine, and hallucinogens but not heavy episodic drinking, cocaine, or ecstasy. These results suggest substance use is associated with sexual network structure and may increase HIV disparities between individuals who do and do not use substances.

Getting to yes: Pilot sequential multiple assignment randomized trial of motivational enhancement interventions targeting preexposure prophylaxis use in sexual minority men who use stimulants

OBJECTIVE

This pilot sequential multiple assignment randomized trial estimated the feasibility, acceptability, and scalability of telehealth motivational enhancement interventions for optimizing HIV prevention efforts in sexual minority men (SMM) who use stimulants.

METHOD

Seventy SMM who use stimulants with nonreactive HIV results that were not taking preexposure prophylaxis (PrEP) were randomized to: (a) a two-session motivational interviewing (MI) intervention focusing on PrEP use and concomitant risk behaviors; or (b) a contingency management (CM) intervention with financial incentives for PrEP clinical evaluation ($50) and filling a PrEP prescription ($50). After 3 months, participants who reported they had not filled a prescription for PrEP were randomized a second time to: (a) switch to a second-stage intervention (i.e., MI + CM); or (b) continue with assessments only.

RESULTS

There was a robust engagement in the interventions, which participants described as flexible and nonjudgmental. Participants reported using CM incentives to meet basic needs and indicated that MI sessions improved their understanding of PrEP. The estimated cost of intervention delivery per participant was $404 for MI, $236 for CM, and $475 for MI + CM. Across both randomizations, participants who received CM only were most likely to provide verified evidence of PrEP use over 6 months, and there were potential benefits for reducing concomitant risk behaviors in nonresponders receiving MI + CM. Prior PrEP use and increases in PrEP intentions were significantly associated with verified PrEP use.

CONCLUSION

Although more definitive trials are needed to examine effectiveness, telehealth motivational enhancement interventions are promising, scalable approaches for optimizing HIV prevention among SMM who use stimulants. (PsycInfo Database Record (c) 2025 APA, all rights reserved).

Medical chart-reported alcohol consumption, substance use, and mental health issues in association with HIV pre-exposure prophylaxis (PrEP) nonadherence among gay, bisexual, and other men-who-have-sex-with-men

BACKGROUND

Although some evidence suggests that alcohol, substance use, and mental health issues diminish adherence to HIV Pre-Exposure Prophylaxis (PrEP) among gay, bisexual, and other men-who-have-sex-with-men (gbMSM), findings are somewhat inconsistent and have primarily derived from studies involving non-random samples. Medical chart extraction can provide unique insight by in part surmounting sampling-related limitations, as data for entire PrEP clinic populations can be examined. Our investigation entailed comprehensive chart extraction to assess the extent to which chart-reported alcohol, substance use, and mental health issues were associated with chart-reported PrEP nonadherence.

METHODS

Data from medical charts of gbMSM at two PrEP clinics in Toronto, Canada were extracted for a retrospective 12-month period (02/2018-01/2019). Charts were reviewed for all patients who were 1) ≥ 18 years old; 2) gbMSM; 3) prescribed PrEP ≥ 3 months, and 4) not in a PrEP-related drug trial. Information regarding PrEP, alcohol, substance use, mental health, and sexual behavior was extracted. PrEP adherence was classified in terms of (1) any reported nonadherence, and (2) 'suboptimal adherence,' reflecting nonadherence patterns indicative of insufficient pharmacological protection from HIV. Multivariate logistic regression was employed to identify factors associated with adherence outcomes.

RESULTS

Data were extracted from 4,292 clinic visits among 501 eligible patients (age: M = 39.1; duration on PrEP: M = 17.4 months; daily PrEP regimen = 93.8%). Hazardous/harmful drinking, club drug use, and mental health issues were reported among 8.8%, 22.2%, and 26.1% of patients, respectively. Any nonadherence and suboptimal adherence were reported among 37.5% and 12.4% of patients, respectively. Factors significantly associated with any nonadherence included age < 25 (AOR = 3.08, 95%CI = 1.54-6.15, p < .001), club drug use (AOR = 2.71, 95%CI = 1.65-4.47, p < .001), and condomless sex (AOR = 1.83, 95%CI = 1.19-2.83, p = .006). For suboptimal adherence, significant factors included age < 25 (AOR = 4.83, 95%CI = 2.28-10.22, p < .001), non-daily PrEP regimens (AOR = 2.94, 95%CI = 1.19-7.22, p = .019), missing PrEP appointments (AOR = 1.97, 95%CI = 1.09-3.55, p = .025), and club drug use (AOR = 1.97, 95%CI = 1.01-3.68, p = .033). Neither alcohol nor mental health issues were associated with nonadherence outcomes.

CONCLUSIONS

Chart-indicated suboptimal adherence was present among a small subgroup of PrEP-prescribed gbMSM. Adherence-related interventions should target gbMSM who use club drugs, are younger, experience challenges attending PrEP care, and are prescribed non-daily regimens. Offering long-acting injectable PrEP when available and feasible may also improve PrEP's HIV-preventive impact among this population.

HIV, inflammation, and initiation of methamphetamine use in sexual and gender minorities assigned male at birth

Methamphetamine use and HIV disproportionately affect sexual and gender minority (SGM) people assigned male at birth. Identifying risk factors for methamphetamine use is crucial to inform preventive interventions. In this cohort study with 1,296 SGM people assigned male at birth, ages 16 to 29, and who resided in Chicago, Poisson regression analyses indicated the prevalence of methamphetamine use increased from 2015 to 2023 [Incidence Rate Ratio (IRR) = 1.07; 95% CI = 1.01 to 1.13; P = 0.02]. This increase was most pronounced among those ages 25 or older at baseline (IRR = 2.20; 95% CI = 1.33 to 3.63; P = 0.002), and 23.9 [Interquartile Range (IQR) = 22.1 to 26.9] was the median age of first-time methamphetamine use. In 826 participants with a prior HIV diagnosis or previous inflammatory measurements, Cox proportional-hazards models examined risk factors for incident, first-time methamphetamine use. Adjusting for other substance use, the rate of incident, first-time methamphetamine use was two-fold greater after HIV diagnosis [adjusted hazard ratio (aHR) = 2.02; 95% CI = 1.27 to 3.23; P = 0.003]. For each SD higher C-reactive protein, the rate of incident, first-time methamphetamine use was 18% greater (aHR = 1.18; 95% CI, 1.05 to 1.34; P = 0.008). HIV seroconversion and inflammation could increase the risk of initiating methamphetamine use in SGM people assigned male at birth.

Association of Partnership-Level Methamphetamine Use on Inconsistent PrEP Care Engagement Among GBMSM in Los Angeles County

There are limited quantitative studies describing the association between meth use in the context of male-male sexual partnerships and PrEP care engagement. We assessed the longitudinal relationship between individual and partnership level meth use with inconsistent PrEP engagement among young gay, bisexual and other men who have sex with men (GBMSM) in Los Angeles. The primary exposure was meth use at the partnership level with a ternary variable (neither partner nor participant used meth, either used meth, or both used meth). Generalized estimating equations were used to assess odds of inconsistent PrEP engagement at different levels of partner-participant meth use, adjusting for age at visit, number of recent male partners and partner intimacy. Among inconsistent PrEP engagement, 61% (n = 84, vs. 79.5%, n = 346 continuous) reported that neither they nor their partner used meth, 22% (n = 31, vs. 18%, n = 56) reported that either partner or participant used meth and 17% (n = 24, vs. 8%, n = 33) reported that both partner and participant used meth (P < 0.01). There were increased odds of inconsistent PrEP engagement when both partner and participant reported meth use (aOR: 3.82; 95%CI: 1.83-7.99) and when either partner or participant reported meth use (aOR: 2.46; 95%CI: 1.28-4.75). Meth use plays an important role in consistent PrEP engagement among GBMSM in mSTUDY. PrEP users who use meth with partners may benefit from integrated interventions addressing both meth use and PrEP engagement.

PrEP Uptake and Methamphetamine Use Patterns in a 4-Year U.S. National Prospective Cohort Study of Sexual and Gender Minority People, 2017-2022

Methamphetamine use is on the rise among sexual and gender minority people who have sex with men (SGMSM), escalating their HIV risk. Despite pre-exposure prophylaxis (PrEP) being an effective biomedical HIV prevention tool, its uptake in relation to methamphetamine use patterns in SGMSM has not been studied. In a U.S. cohort study from 2017 to 2022, 6,253 HIV-negative SGMSM indicated for but not using PrEP were followed for four years. Methamphetamine use was categorized (i.e., newly initiated, persistently used, never used, used but quit), and PrEP uptake assessed using generalized estimating equation (GEE), adjusted for attrition. Participants had a median age of 29, with 51.9% White, 11.1% Black, 24.5% Latinx, and 12.5% other races/ethnicities. Over the four years, PrEP use increased from 16.3 to 27.2%. GEE models identified risk factors including housing instability and food insecurity. In contrast, older age, health insurance, clinical indications, and prior PrEP use increased uptake. Notably, Latinx participants were more likely to use PrEP than Whites. Regarding methamphetamine use, those who newly initiated it were more likely to use PrEP compared to non-users. However, those who quit methamphetamine and those who persistently used it had PrEP usage rates comparable to those of non-users. Though PrEP uptake increased, it remained low in SGMSM. Methamphetamine use was associated with PrEP uptake. Healthcare providers should assess methamphetamine use for harm reduction. Prioritizing younger, uninsured SGMSM and addressing basic needs can enhance PrEP uptake and reduce HIV vulnerabilities.

PrEP Discontinuation In A US National Cohort Of Sexual And Gender Minority Populations, 2017-22

In the US, sexual and gender minority populations are disproportionately affected by HIV. Pre-exposure prophylaxis (PrEP) is a key prevention method, but its effectiveness relies on consistent usage. Our four-year national cohort study explored PrEP discontinuation among sexual and gender minority people who initiated PrEP. We found a high annual rate of discontinuation (35-40 percent) after PrEP initiation. Multivariable analysis with 6,410 person-years identified housing instability and prior history of PrEP discontinuation as predictors of discontinuation. Conversely, older age, clinical indication for PrEP, and having health insurance were associated with ongoing PrEP use. To promote sustained PrEP use, strategies should focus on supporting those at high risk for discontinuation, such as younger people, those without stable housing or health insurance, and prior PrEP discontinuers.

Testing the Effectiveness of a Motivational Interviewing Intervention to Reduce HIV Risk and Drug Use in Young Sexual Minority Men in a Community-Based Organization Setting

Younger sexual minority men (YSMM) remain at high risk for HIV infection and substance use increases this risk. This study evaluated the effectiveness of a (4-session) motivational interviewing (MI) intervention to reduce substance use and sexual risk taking when delivered at two community-based organizations (CBOs) in the New York City metropolitan area. Participants included 86 YSMM aged 15-29 who reported recent sexual HIV transmission risk and substance use. Overall, 86% of the sample identified as a racial or ethnic minority. Within each CBO, participants were randomized to receive either the MI intervention or enhanced treatment as usual (an HIV testing session plus PrEP information and referrals to CBO services). Contrary to hypotheses, results provided no indication that the MI intervention was associated with reductions in substance use (alcohol, cannabis, or other illicit drug use) or sexual risk taking or current PrEP use. Results are discussed in terms of challenges in real world intervention implementation, study enrollment, and the COVID-19 pandemic.

Pre-exposure Prophylaxis Adherence Among Men Who Have Sex With Men: A Systematic Review and Meta-analysis

OBJECTIVES

The effectiveness and efficiency of pre-exposure prophylaxis (PrEP) in reducing the transmission of human immunodeficiency virus (HIV) among men who have sex with men (MSM) relies on how widely it is adopted and adhered to, particularly among high-risk groups of MSM. The meta-analysis aimed to collect and analyze existing evidence on various factors related to PrEP adherence in MSM, including demographic characteristics, sexual behaviors, substance use, and psychosocial factors.

METHODS

The meta-analysis followed the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. The search included articles published between January 2018 and December 2022, obtained from the PubMed, ScienceDirect, and Scopus databases. The studies that were included in the analysis reported the proportion of MSM who demonstrated adherence to PrEP and underwent quality appraisal using the Newcastle-Ottawa Scale.

RESULTS

Of the 268 studies initially identified, only 12 met the inclusion criteria and were included in the final meta-analysis. The findings indicated that education (odds ratio [OR], 1.64; 95% confidence interval [CI], 1.12 to 2.40), number of sexual partners (OR, 1.16; 95% CI, 1.02 to 1.31), engaging in sexual activities with an human immunodeficiency virus-positive partner (OR, 1.59; 95% CI, 1.16 to 2.26), substance use (OR, 0.83; 95% CI, 0.70 to 0.99), and lower levels of depression (OR, 0.55; 95% CI, 0.37 to 0.82) were associated with higher rates of PrEP adherence among MSM.

CONCLUSIONS

Despite these findings, further research is necessary to investigate PrEP adherence more comprehensively. The findings of this meta-analysis can be utilized to inform interventions aimed at improving PrEP adherence among MSM and provide directions for future research in this area.

HIV Prevention and Care Among Black Cisgender Sexual Minority Men and Transgender Women: Protocol for an HIV Status-Neutral Cohort Study Using an Observational-Implementation Hybrid Approach

BACKGROUND

Black cisgender gay, bisexual, and other sexual minority men (SMM) and transgender women (TW) continue to be heavily affected by HIV. Further research is needed to better understand HIV prevention and care outcomes in this population. In particular, there is a need for research examining the impact of substance use and sleep health on HIV prevention and treatment outcomes among Black SMM and TW.

OBJECTIVE

This paper outlines the study methods being used in the recently launched follow-up study to the Neighborhoods and Networks (N2) study, which we refer to as N2 Part 2 (N2P2). N2P2 aims to address this gap in the literature, build off the findings of the original N2 study, and identify socioenvironmental determinants of health, including whether neighborhood and network factors mediate and moderate these relationships.

METHODS

Building on the N2 cohort study in Chicago from 2018 to 2022, N2P2 used a prospective longitudinal cohort design and an observational-implementation hybrid approach. With sustained high levels of community engagement, we aim to recruit a new sample of 600 Black SMM and TW participants residing in the Chicago metropolitan statistical area. Participants are asked to participate in 3 study visits across an 18-month study period (1 visit every 9 months). Four different forms of data are collected per wave: (1) an in-person survey, (2) biological specimen collection, (3) a daily remote ecological momentary assessment for 14 days after each study visit, and (4) data from electronic health records. These forms of data collection continue to assess neighborhood and network factors and specifically explore substance use, sleep, immune function, obesity, and the implementation of potential interventions that address relevant constructs (eg, alcohol use and pre-exposure prophylaxis adherence).

RESULTS

The N2P2 study was funded in August 2021 by the National Institute of Drug Abuse (R01DA054553 and R21DA053156) and National Heart, Lung, and Blood Institute (R01HL160325). This study was launched in November 2022. Recruitment and enrollment for the first wave of data collection are currently ongoing.

CONCLUSIONS

The N2P2 study is applying innovative methods to comprehensively explore the impacts of substance use and sleep health on HIV-related outcomes among an HIV status-neutral cohort of Black SMM and TW in Chicago. This study is applying an observational-implementation hybrid design to help us achieve findings that support rapid translation, a critical priority among populations such as Black SMM and TW that experience long-standing inequities with regard to HIV and other health-related outcomes. N2P2 will directly build off the findings that have resulted from the original N2 study among Black SMM and TW in Chicago. These findings provide a better understanding of multilevel (eg, individual, network, and neighborhood) factors that contribute to HIV-related outcomes and viral suppression among Black SMM and TW.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/48548.

Pre-Exposure Prophylaxis Care Continuum for HIV Risk Populations: An Umbrella Review of Systematic Reviews and Meta-Analyses

Pre-exposure prophylaxis (PrEP) is an effective biomedical strategy for HIV prevention. This umbrella review is aimed at providing a comprehensive summary of the current status of each stage of the PrEP care cascade. A systematic literature search was conducted in PubMed, Embase, and Cochrane. Additionally, a Measurement Tool to Assess Systematic Reviews 2 (AMSTAR-2) tool and Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) checklist were used to evaluate their methodological and reporting quality, respectively. A total of 30 systematic reviews met the inclusion criteria. According to the results of methodological quality assessment, 3 reviews were rated as low, while 27 as critically low. Furthermore, the results of the reporting quality evaluation revealed a mean score of 23.03 for the included reviews. Across all the reviews, awareness of PrEP was generally moderate in all populations, and the acceptability was even higher compared with awareness. Unfortunately, the PrEP uptake among different groups was even less optimal, although the adherence was almost above moderate, and several barriers that hindered the utilization of PrEP were identified, and the most common are as follows: cost, stigma, lack of knowledge, mistrust, low risk perception, and more. Although PrEP has proven to be an effective prevention method to date, the promotion of PrEP failed to achieve the anticipated outcome. To reinforce the generalization of and use of PrEP, and effectively control HIV transmission, it is urgent to identify the underlying causes of low uptake rates so that efficient interventions can be implemented.

Correlates of Mpox Vaccination among Sexual Minority Men in the United States: Sexual Behavior, Substance Use, and Main Partner Relationships

Sexual minority men (SMM) have accounted for the majority of infections during the 2022 outbreak of the orthopox virus known as mpox (previously "monkeypox") in the US. This study examined correlates of mpox vaccination. Between July 28 and September 22, 2022, adult cisgender SMM (n = 2,620) not previously diagnosed with mpox responded to recruitment advertisements on social networking applications and completed an online survey. Of these, 730 (27.9%) received at least one vaccine dose. Logistic regression indicated sex with a casual partner was positively associated with vaccination. Stimulant drug use was negatively associated with vaccination; meanwhile, the use of ecstasy, ketamine, gamma-hydroxybutyrate (GHB) or psychedelics was positively associated with vaccination. Among partnered SMM, non-monogamous sexual agreements, relationship length of ≥2 years, and relationship functioning were positively associated with vaccination. Even at low levels of relationship functioning, SMM in non-monogamous relationships of ≥2 years were more likely to be vaccinated than single SMM. At very high levels of relationship functioning, partnered SMM were more likely to be vaccinated than single SMM regardless of sexual agreement or relationship length. Findings are discussed in relation to prior research on HIV, other STI prevention, and theories of dyadic functioning and health in this population.

"The familiar taste of poison": a qualitative study of multi-level motivations for stimulant use in sexual minority men living in South Florida

BACKGROUND

In the US, stimulant use is associated with a 3-6 times greater rate of HIV seroconversion in sexual minority men (SMM) than in those who do not use stimulants. Annually, 1 in 3 SMM who HIV seroconvert will be persistent methamphetamine (meth) users. The primary objective of this qualitative study was to explore experiences of stimulant use in SMM living in South Florida, a high priority region for the Ending the HIV Epidemic initiative.

METHODS

The sample included 25 SMM who use stimulants, recruited via targeted ads on social networking apps. Participants completed one-on-one semi-structured qualitative interviews, conducted from July 2019 through February 2020. A general inductive approach was used to identify themes relating to experiences, motivations, and overall relationship with stimulant use.

RESULTS

Mean age of participants was 38.8, ranging from 20 to 61 years old. Participants were 44% White, 36% Latino, 16% Black and 4% Asian. Most participants were born in the US, self-identified as gay, and preferred meth as their stimulant of choice. Themes included: (1) stimulants as cognitive enhancements for focus or task completion, including transitioning to meth after first using prescription psychostimulants; (2) unique South Florida environment where participants could be open regarding their sexual minority status while also being influential on their stimulant use; (3) stimulant use as both stigmatizing and a coping mechanism for stigma. Participants anticipated stigma by family and potential sexual partners due to their stimulant use. They also reported using stimulants to cope with feelings of stigma due to their minoritized identities.

CONCLUSION

This study is among the first to characterize motivations for stimulant use in SMM living in South Florida. Results highlight both the risk and protective factors of the South Florida environment, psychostimulant misuse as a risk for meth initiation, and the role of anticipated stigma on stimulant use in SMM. Understanding stimulant use motivations can help to shape intervention development. This includes developing interventions that address individual, interpersonal, and cultural factors that drive stimulant use and increase risk of HIV acquisition. Trial registration NCT04205487.

The Use of HIV Pre- and Postexposure Prophylaxis Among a Web-Based Sample of HIV-Negative and Unknown Status Cisgender and Transgender Sexual Minority Men: Cross-sectional Study

BACKGROUND

HIV disproportionately affects sexual minority men (SMM) in the United States.

OBJECTIVE

We sought to determine past HIV postexposure prophylaxis (PEP) use and current and prior pre-exposure prophylaxis (PrEP) use among a web-based sample of cisgender and transgender men who have sex with men.

METHODS

In 2019, HIV-negative and unknown status SMM (n=63,015) were recruited via geosocial networking apps, social media, and other web-based venues to participate in a brief eligibility screening survey. Individuals were asked about past PEP use and current and prior PrEP use. We examined associations of demographics, socioeconomic indicators, and recent club drug use with PEP and PrEP use, as well as the association between past PEP use and current and prior PrEP use using generalized linear models and multinomial logistic regression. Statistical significance was considered at P<.001, given the large sample size; 99.9% CIs are reported.

RESULTS

Prior PEP use was reported by 11.28% (7108/63,015) of the participants, with current or prior PrEP use reported by 21.95% (13,832/63,015) and 8.12% (5118/63,015), respectively. Nearly half (3268/7108, 46%) of the past PEP users were current PrEP users, and another 39.9% (2836/7108) of the participants who reported past PEP use also reported prior PrEP use. In multivariable analysis, past PEP use was associated with current (relative risk ratio [RRR] 23.53, 99.9% CI 14.03-39.46) and prior PrEP use (RRR 52.14, 99.9% CI 29.39-92.50). Compared with White men, Black men had higher prevalence of past PEP use and current PrEP use, Latino men had higher prevalence of PEP use but no significant difference in PrEP use, and those identifying as another race or ethnicity reported higher prevalence of past PEP use and lower current PrEP use. Past PEP use and current PrEP use were highest in the Northeast, with participants in the Midwest and South reporting significantly lower PEP and PrEP use. A significant interaction of Black race by past PEP use with current PrEP use was found (RRR 0.57, 99.9% CI 0.37-0.87), indicating that Black men who previously used PEP were less likely to report current PrEP use. Participants who reported recent club drug use were significantly more likely to report past PEP use and current or prior PrEP use than those without recent club drug use.

CONCLUSIONS

PrEP use continues to be the predominant HIV prevention strategy for SMM compared with PEP use. Higher rates of past PEP use and current PrEP use among Black SMM are noteworthy, given the disproportionate burden of HIV. Nonetheless, understanding why Black men who previously used PEP are less likely to report current PrEP use is an important avenue for future research.

Evolution of Risk Behaviors, Sexually Transmitted Infections and PrEP Care Continuum in a Hospital-Based PrEP Program in Barcelona, Spain: A Descriptive Study of the First 2 Years' Experience

INTRODUCTION

Pre-exposure prophylaxis (PrEP) is effective for HIV prevention, but the PrEP care continuum also involves improving PrEP awareness, uptake, adherence, and retention in care. Users' awareness is often compromised because of vulnerability factors and risk behaviors, such as chemsex practice or specific substance use, which could lead to risk compensation. Correct adherence and retention in care are essential to achieve the full effectiveness of PrEP. This study describes changes in users' risk behaviors and sexually transmitted infections (STIs), as well also PrEP care continuum details.

METHODS

This was a descriptive single-center retrospective study including adults at high HIV risk screened between November 2019 and June 2021 in the PrEP program of our hospital. Demographic, behavioral, STI, adherence, and retention in care variables were assessed. Data were collected from medical records and self-report questionnaires.

RESULTS

A total of 295 people were included, 94% men and 5% transgender women, with a mean age of 34 years (SD 10) and 10% sex workers. At baseline, 55% disclosed chemsex practice and 3% slamming. During follow-up, condom use for anal intercourse decreased from 41% to 13% (p ≤ 0.0001) and one HIV infection was detected; other risk behaviors and STIs remained stable. Chemsex, group sex, fluid exchange, and condomless anal intercourse were related to STI risk. Adherence was correct in 80% of users, and retention in care was 57%. Discontinuations and loss to follow-up were high, mainly affecting transgender women, sex workers, and people practicing fisting.

CONCLUSION

PrEP program implementation in our hospital was adequate, since it allowed, in a population at high HIV risk, overall users' risk behaviors and STIs to remain stable, with only one HIV diagnosis during the follow-up. We should target specific strategies to improve adherence and retention in care, as vulnerable subgroups at higher risk of loss to follow-up are identified.