Glenn-Milo Santos, PhD, MPH

Affiliated Faculty

I am Professor in the Department of Community Health Systems and the Division of Prevention Science at the University of California, San Francisco, and a Senior Research Scientist at the San Francisco Department of Public Health. I have been conducting research on the intersection between substance use (i.e., alcohol, methamphetamine, cocaine, and opioids), and HIV, and intervention research studies among key populations at risk for HIV (i.e., men who have sex with men [MSM], transgender individuals, and people who use drugs) for 15 years. My contributions to Science are summarized below:

1. A significant thread of my research has investigated the factors associated with HIV risk among key affected populations. I have published multiple articles that have demonstrated how a myriad of social, behavioral, and structural factors play a role in sustaining the HIV epidemic among men who have sex with men (MSM), transgender women, and people who use drugs. These publications describe how the co-occurrence of these factors may result in heightened risk for HIV and underscore the need for multi-level interventions that jointly address these “syndemic” conditions. Furthermore, I have published extensively on how stigma, discrimination, and criminalization impacts access to evidence-based interventions. Most recently, I also published one of the first global studies to document the disparate impact of COVID-19 on HIV prevention and treatment service accessibility among MSM who engage in sex work, were from immigrant backgrounds, were racial/ethnically minoritized, and who have lower socio-economic status in the journal AIDS and Behavior.

2. In addition to conducting epidemiologic studies on the determinants of HIV risk among key populations, I have actively engaged in the design and evaluation of interventions to address modifiable risk factors linked to HIV risk. In particular, I have conducted randomized-controlled, pharmacologic and behavioral intervention trials to reduce substance use and substance-associated sexual risk behaviors among key populations. I was the primary analyst in the first randomized, placebo-controlled trial that efficaciously reduced methamphetamine urine-positivity and methamphetamine-associated sexual risk behaviors in intention-to-treat analyses. Additionally, I was the lead author of the first article that have demonstrated the efficacy of Personalized Cognitive Counseling (PCC) in reducing alcohol and substance use among MSM—these findings has been included in the CDC’s Compendium of Evidence-Based Interventions and Best Practices for HIV Prevention. These studies are also unique because they have enrolled active-substance users who are not seeking substance use treatment and support the feasibility of conducting research based on harm-reduction principles.

3. I am also actively conducting research on the health outcomes among people living with HIV. In this capacity, I have examined outcomes along the HIV care continuum and evaluated predictors of linkage, retention and engagement in care, and virologic suppression. Additionally, I have published papers on the collateral benefits of ART initiation and the correlates of spontaneous HCV clearance using data from longitudinal cohort studies among people living with HIV. I was also involved in the seminal study that demonstrated the association between community viral load (i.e., a community's average level of HIV infectiousness) and newly diagnosed HIV infections. This paper, which has been cited 851 times, provided proof of concept data for the Treatment as Prevention (“TasP”) approach.

4. As a translational research scientist and epidemiologist, I have also endeavored to synthesize research findings across multiple studies. I conducted the first systematic review and meta-analysis on the efficacy of behavioral interventions on amphetamine-group substances, published on The Lancet. As the primary analyst in this paper, I created the fixed and random-effects models for the meta-analyses conducted in the review, which demonstrated that high-intensity behavioral interventions are efficacious in reducing methamphetamine in pooled analyses. I was also the lead author in a narrative review synthesizing the literature on non-injection substance use interventions among MSM. Most recently, I was the senior author in a narrative review on novel intervention to prevent HIV and Hepatitis C among people who inject drugs. Both narrative reviews provided an up-to-date account of the state of prevention science and highlighted the most promising interventions for substance users. Additionally, I published a meta-analyses on the psychometric properties of measures of substance use with collaborators from the HIV Prevention Trials Network.
Education
B.A., - Biology, Carleton College
Ph.D., - Department of Epidemiology and Biostatistics, University of California San Francisco
- Diversity, Equity, and Inclusion Champion Training, University of California San Francisco
M.P.H., - Division of Epidemiology, School of Public Health, University of California, Berkeley
Honors and Awards
  • National Institutes of Health Director’s Early Independence Award, National Institutes of Health, Office of the Director, 2014
  • University of California President’s Dissertation-Year Fellowship Program Award, University of California Office of the President, 2013
  • Graduate Research Mentorship Fellowship, Graduate Division, University of California, San Francisco, 2012
  • National Institute on Drug Abuse Dissertation Research Award, National Institutes of Health, 2012
  • Young Innovator in HIV Research, 2011 National HIV Prevention Conference, Centers For Disease Control and Prevention, 2011
  • Gold Star Scientific Merit Award, 6th IAS Conference On HIV Pathogenesis, Treatment and Prevention, 2011
  • Youth Health Advisor, San Francisco Health Commission, 2005
  • Freeman Foundation Research Fellowship, Carleton College, 2003
Publications

  1. Coffin PO, Santos GM, McMahan VM, Luna Marti X, Matheson T, Brennan S, Arenander J, Robinson M, Farley J, Pope E, Rolles A, Kosakowski S, Green TC, Walley AY. Repeated-dose behavioral intervention to reduce opioid overdose among overdose survivors with opioid use disorder: A two-site phase?III randomized controlled trial. Addiction (Abingdon, England) 2025. PMID: 41261059


  3. Nagata JM, Caffrey A, Nguyen ND, Nayak S, Frimpong I, Helmer CK, Ricklefs C, Al-Shoaibi AA, Testa A, Brindis CD, Santos GM, Baker FC. Cannabis expectancies mediate the association between social media use and cannabis experimentation in early adolescents: A prospective cohort study. Drug and alcohol dependence 2025. PMID: 41197602


  4. Hahn JA, Kane JC, Fatch R, Espinosa da Silva C, Emenyonu NI, Scheffler A, Chirayil P, So-Armah K, Kahler CW, Conroy AA, Edelman EJ, Woolf-King S, Parry CD, Kiene SM, Chamie G, Muyindike WR, Adong J, Go VF, Cook RL, Morojele NK, Fiellin DA, Santos GM, Tahir P, Samet J, Krupitsky E, Allen IE. Alcohol interventions for persons with HIV: Meta-analysis of randomized controlled trials using phosphatidylethanol and self-report. Drug and alcohol dependence 2025. PMID: 40992009


  5. Chang YG, McMahan VM, Matheson T, Luna Marti X, Robinson M, Rolles A, Kosakowski S, Santos GM, Walley AY, Coffin PO. The Association of Perceived Risk for Opioid Overdose and Subsequent Overdose Among a Cohort of Opioid Overdose Survivors Who Use Nonprescribed Opioids. Substance use & addiction journal 2025. PMID: 40698403


  6. Harris OO, Egbunikeokye J, Bagby WD, Rivas A, Wilson N, Ouner JJ, Gutierrez JI, Santos GM, Wharton M. "Our lives matter": a qualitative examination of the impact of COVID-19 shelter-in-place orders on resource security and mental and physical health of Black and Latino sexual minority men in California and New York. Journal of health equity 2025. PMID: 40842960


  7. Glenn-Milo Santos, Willi McFarland, Erin C. Wilson. Prevalence and correlates of sexual intimate partner violence among trans women in the San Francisco Bay Area. Frontiers in Global Women's Health 2025. PMID:


  8. Rush CR, Santos GM, McMahan VM, Fraser A, Clark J, Luna Marti X, Walker JE, Shoptaw S, Coffin PO. Mirtazapine reduces hypothetical methamphetamine demand in humans. Drug and alcohol dependence 2025. PMID: 40580890


  9. Kyna Long, Vanessa M. McMahan, Starley B. Shade, Irene Liu, Glenn-Milo Santos, Phillip O. Coffin. Receipt of prescribed opioids is associated with achieving quality healthcare indicators among patients with chronic non-cancer pain. Journal of Public Health: From Theory to Practice 2025. PMID:


  11. Hernandez CJ, Trujillo D, Tate M, Baguso G, Quintana J, McNaughten KC, Jain JP, Santos GM, Arayasirikul S, McFarland W, Wilson EC. Assessing the Risk of Sexually Transmitted Infections among Men who have Sex with Men in San Francisco during COVID-19: A Socio-ecological Analysis. AIDS and behavior 2025. PMID: 39798027


  12. Gyamerah AO, Dunham AE, Ikeda J, Canizares AC, McFarland W, Wilson EC, Santos GM. Impact of the COVID-19 pandemic on violence exposure and alcohol use among adults who drink alcohol. PloS one 2024. PMID: 39739971


  13. Hsiang E, Patel K, Wilson EC, Dunham A, Ikeda J, Matheson T, Santos GM. Barriers and facilitators to medication-assisted treatment for cocaine use disorder among men who have sex with men: a qualitative study. Addiction science & clinical practice 2024. PMID: 39568074


  14. Nagata JM, Shim J, Low P, Ganson KT, Testa A, He J, Santos GM, Brindis CD, Baker FC, Shao IY. Prospective association between screen use modalities and substance use experimentation in early adolescents. Drug and alcohol dependence 2024. PMID: 39612721


  15. Ngo TP, Cuffaro T, Santos GM. Syndemic conditions associated with hazardous alcohol consumption among sexual minority men in San Francisco. Drug and alcohol dependence reports 2024. PMID: 39619334


  17. Shao IY, Low P, Sui S, Otmar CD, Ganson KT, Testa A, Santos GM, He J, Baker FC, Nagata JM. Association between gender diversity and substance use experimentation in early adolescents. Drug and alcohol dependence 2024. PMID: 39541739


  19. Jain JP, Ma Y, Dawson-Rose C, Santos GM, Han A, Price J, Hahn JA, Tien PC. The prevalence and correlates of biomarker positive unhealthy alcohol use among women living with and without HIV in San Francisco, California. PloS one 2024. PMID: 39365789


  21. Goldman ML, McDaniel M, Manjanatha D, Rose ML, Santos GM, Shade SB, Lazar AA, Myers JJ, Handley MA, Coffin PO. Impact of San Francisco's New Street crisis response Team on Service use among people experiencing homelessness with mental and substance use disorders: A mixed methods study protocol. PloS one 2023. PMID: 38051726


  24. Nutor JJ, Gyamerah AO, Alhassan RK, Duah HO, Thompson RGA, Wilson N, Harris O, Gutierrez J, Hoffmann TJ, Getahun M, Santos GM. Influence of depression and interpersonal support on adherence to antiretroviral therapy among people living with HIV. AIDS research and therapy 2023. PMID: 37386514


  26. Jain JP, Hill M, Gamarel KE, Santos GM, Johnson MO, Neilands TB, Dilworth SE, Reback CJ, Sevelius J. Socio-ecological Barriers to Viral Suppression Among Transgender Women Living with HIV in San Francisco and Los Angeles, California. AIDS and behavior 2023. PMID: 36682008


  27. Leonard A, Broussard J, Jain J, Kumar S, Santos GM, Dawson-Rose C. Prevalence and correlates of methamphetamine use in transitional age youth experiencing homelessness or housing instability in San Francisco, CA. Journal of nursing scholarship : an official publication of Sigma Theta Tau International Honor Society of Nursing 2022. PMID: 36480216


  28. Hsiang E, Gyamerah A, Baguso G, Jain J, McFarland W, Wilson EC, Santos GM. Prevalence and correlates of substance use and associations with HIV-related outcomes among trans women in the San Francisco Bay Area. BMC infectious diseases 2022. PMID: 36435761


  29. Hong C, Stephenson R, Santos GM, Garner A, Howell S, Holloway I. Intimate Partner Violence Victimization During the COVID-19 Pandemic Among a Global Online Sample of Sexual Minority Men. Journal of Family Violence 2022. PMID: 36373030


  30. Santos GM, Ikeda J, Coffin P, Walker J, Matheson T, Ali A, McLaughlin M, Jain J, Arenander J, Vittinghoff E, Batki S. Targeted Oral Naltrexone for Mild to Moderate Alcohol Use Disorder Among Sexual and Gender Minority Men: A Randomized Trial. The American journal of psychiatry 2022. PMID: 36285404


  31. McLaughlin MF, Jain JP, Ikeda J, Walker JE, Coffin P, Santos GM. The correlates of high phosphatidylethanol (PEth) levels and its concordance with self-reported heavy alcohol consumption among men who have sex with men who binge drink alcohol. Alcoholism, clinical and experimental research 2022. PMID: 35722862


  32. Ayala G, Santos GM, Arreola S, Howell S, Hoffman T. Enablers and Barriers to HIV Services for Gay and Bisexual Men in the COVID-19 Era: Fusing Datasets from Two Global Online Surveys Via File Concatenation with Adjusted Weights. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2022. PMID: 35377321


  33. Santos GM, Hong C, Wilson N, Nutor JJ, Harris O, Garner A, Holloway I, Ayala G, Howell S. Persistent disparities in COVID-19-associated impacts on HIV prevention and care among a global sample of sexual and gender minority individuals. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2022. PMID: 35435149


  34. Jain JP, Santos GM, Hao J, Leonard A, Miller AM, Cuca YP, Dawson-Rose C. The syndemic effects of adverse mental health conditions and polysubstance use on being at risk of clinical depression among marginally housed and homeless transitional age youth living in San Francisco, California. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2022. PMID: 35298526


  35. Suen LW, McMahan VM, Rowe C, Bhardwaj S, Knight K, Kushel MB, Santos GM, Coffin P. Factors Associated with Pain Treatment Satisfaction Among Patients with Chronic Non-Cancer Pain and Substance Use. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2021. PMID: 34772764


  36. Santos GM, Ikeda J, Coffin P, Walker JE, Matheson T, McLaughlin M, Jain J, Vittinghoff E, Batki SL. Pilot study of extended-release lorcaserin for cocaine use disorder among men who have sex with men: A double-blind, placebo-controlled randomized trial. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2021. PMID: 34265007


  37. Rao A, Rucinski K, Jarrett BA, Ackerman B, Wallach S, Marcus J, Adamson T, Garner A, Santos GM, Beyrer C, Howell S, Baral S. Perceived Interruptions to HIV Prevention and Treatment Services Associated With COVID-19 for Gay, Bisexual, and Other Men Who Have Sex With Men in 20 Countries. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2021. PMID: 33443963


  38. Jain JP, Gyamerah AO, Baguso GN, Dawson-Rose C, Ikeda J, Santos GM. Social and Behavioral Correlates of Sexually Transmitted Infections among Men who Have Sex with Men who Use Alcohol in the San Francisco Bay Area. American journal of men's health 2021. PMID: 34134567


  39. Jain JP, Offer C, Rowe C, Turner C, Dawson-Rose C, Hoffmann T, Santos GM. The Psychosocial Predictors and Day-Level Correlates of Substance Use Among Participants Recruited via an Online Crowdsourcing Platform in the United States: Daily Diary Study. JMIR public health and surveillance 2021. PMID: 33904828


  40. Beliveau CM, McMahan VM, Arenander J, Angst MS, Kushel M, Torres A, Santos GM, Coffin PO. Stimulant use for self-management of pain among safety-net patients with chronic non-cancer pain. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2021. PMID: 33798030


  41. Haq N, McMahan VM, Torres A, Santos GM, Knight K, Kushel M, Coffin PO. Race, pain, and opioids among patients with chronic pain in a safety-net health system. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2021. PMID: 33810908


  42. Garcia A, Rowe C, Turner C, Santos GM. Correlates of Alcohol-Using Network Size Among Men Who Have Sex with Men in San Francisco, CA. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2021. PMID: 33899602


  43. Holloway IW, Garner A, Tan D, Ochoa AM, Santos GM, Howell S. Associations Between Physical Distancing and Mental Health, Sexual Health and Technology Use Among Gay, Bisexual and Other Men Who Have Sex With Men During the COVID-19 Pandemic. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2021. PMID: 33528316


  44. Santos GM, Miller D, Jain J, Gyamerah A, Wilson E, Mcfarland W, Raymond HF. Prevalence and Correlates of Methamphetamine Use Among Older Men Who Have Sex with Men in San Francisco "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2021. PMID:


  45. Santos GM, Ackerman B, Rao A, Wallach S, Ayala G, Lamontage E, Garner A, Holloway IW, Arreola S, Silenzio V, Strömdahl S, Yu L, Strong C, Adamson T, Yakusik A, Doan TT, Huang P, Cerasuolo D, Bishop A, Noori T, Pharris A, Aung M, Dara M, Chung SY, Hanley M, Baral S, Beyrer C, Howell S. Economic, Mental Health, HIV Prevention and HIV Treatment Impacts of COVID-19 and the COVID-19 Response on a Global Sample of Cisgender Gay Men and Other Men Who Have Sex with Men. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2021. PMID: 32654021


  46. Rowe CL, Santos GM, Kornbluh W, Bhardwaj S, Faul M, Coffin PO. Using ICD-10-CM codes to detect illicit substance use: A comparison with retrospective self-report. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2021. PMID: 33621806


  47. Hernandez CJ, Santos GM, Wilson EC. Association of Documentation of Legal Residency Status with Nonprescribed Hormone Use Among Hispanic/Latina Trans Women in San Francisco. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2020. PMID: 34095696


  48. Zepf R, Greene M, Hessol NA, Johnson MO, Santos GM, John MD, Dawson-Rose C. Syndemic conditions and medication adherence in older men living with HIV who have sex with men. AIDS care 2020. PMID: 32468831


  49. Santos GM, Strathdee SA, El-Bassel N, Patel P, Subramanian D, Horyniak D, Cook RR, McCullagh C, Marotta P, Choksi F, Kang B, Allen I, Shoptaw S. Psychometric properties of measures of substance use: a systematic review and meta-analysis of reliability, validity and diagnostic test accuracy. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2020. PMID: 32380951


  50. Coffin PO, Rowe C, Oman N, Sinchek K, Santos GM, Faul M, Bagnulo R, Mohamed D, Vittinghoff E. Illicit opioid use following changes in opioids prescribed for chronic non-cancer pain. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2020. PMID: 32365132


  51. McFarland W, Lin J, Santos GM, Arayasirikul S, Raymond HF, Wilson E. Low PrEP Awareness and Use Among People Who Inject Drugs, San Francisco, 2018. AIDS and behavior 2019. PMID: 31563984


  52. Hsiang E, Offer C, Prescott M, Rodriguez A, Behar E, Matheson T, Santa Maria D, Santos GM. Bridging the Digital Divide Among Racial and Ethnic Minority Men Who Have Sex With Men to Reduce Substance Use and HIV Risk: Mixed Methods Feasibility Study. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2020. PMID: 32347807


  53. Behar E, Bagnulo R, Knight K, Santos GM, Coffin PO. "Chasing the pain relief, not the high": Experiences managing pain after opioid reductions among patients with HIV and a history of substance use. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2020. PMID: 32210442


  54. Coffin PO, Santos GM, Hern J, Vittinghoff E, Walker JE, Matheson T, Santos D, Colfax G, Batki SL. Effects of Mirtazapine for Methamphetamine Use Disorder Among Cisgender Men and Transgender Women Who Have Sex With Men: A Placebo-Controlled Randomized Clinical Trial. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2020. PMID: 31825466


  55. Turner CM, Ahern J, Santos GM, Arayasirikul S, Wilson EC. Parent/Caregiver Responses to Gender Identity Associated With HIV-Related Sexual Risk Behavior Among Young Trans Women in San Francisco. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2019. PMID: 31303553


  56. Coffin PO, Santos GM, Behar E, Hern J, Walker J, Matheson T, Kinnard EN, Silvis J, Vittinghoff E, Fox R, Page K. Randomized feasibility trial of directly observed versus unobserved hepatitis C treatment with ledipasvir-sofosbuvir among people who inject drugs. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2019. PMID: 31158245


  57. Freeborn K, Portillo C, Boyer CB, Santos GM. Misclassification of sexual health risks in a self-identified low risk cohort of men who have sex with men (MSM) enrolled in a community based PrEP program. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2019. PMID: 31129982


  58. Behar E, Chang JS, Countess K, Matheson T, Santos GM, Coffin P. Perceived Causes of Personal versus Witnessed Overdoses among People who Inject Opioids. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2019. PMID: 31070106


  59. Prescott MR, Hern J, Petersen M, Santos GM. Does HIV Pre-Exposure Prophylaxis Modify the Effect of Partnership Characteristics on Condom Use? A Cross-Sectional Study of Sexual Partnerships Among Men Who Have Sex with Men in San Francisco, California. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2019. PMID: 30932698


  60. Baguso GN, Turner CM, Santos GM, Raymond HF, Dawson-Rose C, Lin J, Wilson EC. Successes and final challenges along the HIV care continuum with transwomen in San Francisco. Journal of the International AIDS Society 2019. PMID: 31037858


  61. Santos GM, Tan J, Turner C, Raymond HF. Demographic, Behavioral, and Social Characteristics Associated With Smoking and Vaping Among Men Who Have Sex With Men in San Francisco. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2019. PMID: 31043125


  62. Prescott MR, Santos GM, Arayasirikul S, Wilson E. Partnership-level correlates of sexual risk taking within the sexual partnerships of young transwomen in San Francisco, California. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2019. PMID: 30683755


  63. Hsiang E, Jennings D, Matheson T, Hern J, Euren J, Santos GM. Acceptability of pharmacotherapy for hazardous alcohol use among men who have sex with men: Findings from a qualitative study. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2018. PMID: 30258972


  64. Santos GM, Rowe C, Hern J, Walker JE, Ali A, Ornelaz M, Prescott M, Coffin P, McFarland W, Raymond HF. Prevalence and correlates of hazardous alcohol consumption and binge drinking among men who have sex with men (MSM) in San Francisco. PloS one 2018. PMID: 30118495


  65. Ayala G, Santos GM, Arreola S, Garner A, Makofane K, Howell S. Blue-Ribbon Boys: factors associated with PrEP use, ART use and undetectable viral load among gay app users across six regions of the world. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2018. PMID: 30033536


  66. Rowe C, Wheeler E, Vittinghoff E, Santos GM, Behar E, Coffin PO. Quantity fluctuations of illicitly used opioids and overdose risk. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2018. PMID: 29807248


  67. Turner C, Chandrakumar D, Rowe C, Santos GM, Riley ED, Coffin PO. Cross-sectional cause of death comparisons for stimulant and opioid mortality in San Francisco, 2005-2015. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2018. PMID: 29486419


  68. Rowe C, Vittinghoff E, Colfax G, Coffin PO, Santos GM. Correlates of Validity of Self-Reported Methamphetamine Use among a Sample of Dependent Adults. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2018. PMID: 29461134


  69. Santa Maria D, Padhye N, Yang Y, Gallardo K, Santos GM, Jung J, Businelle M. Drug use patterns and predictors among homeless youth: Results of an ecological momentary assessment. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 29286835


  70. Smith-Bernardin S, Rowe C, Behar E, Geier M, Washington S, Santos GM, Euren J, Martin J, Gleghorn A, Coffin PO. Low-threshold extended-release naltrexone for high utilizers of public services with severe alcohol use disorder: A pilot study. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 29150316


  71. Coffin PO, Santos GM, Matheson T, Behar E, Rowe C, Rubin T, Silvis J, Vittinghoff E. Behavioral intervention to reduce opioid overdose among high-risk persons with opioid use disorder: A pilot randomized controlled trial. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 29049282


  72. Coffin PO, Santos GM, Hern J, Vittinghoff E, Santos D, Matheson T, Colfax G, Batki SL. Extended-release naltrexone for methamphetamine dependence among men who have sex with men: a randomized placebo-controlled trial. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 28734107


  73. Guigayoma J, Chen YH, Snowden JM, Santos GM, Hecht J, Raymond HF. Self-Perceived Viral Load and Sexual Risk Behavior Among Known HIV-Positive MSM in San Francisco, 2014. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 28604432


  74. Brown RE, Turner C, Hern J, Santos GM. Partner-level substance use associated with increased sexual risk behaviors among men who have sex with men in San Francisco, CA. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 28549302


  75. Rowe C, Vittinghoff E, Santos GM, Behar E, Turner C, Coffin PO. Performance Measures of Diagnostic Codes for Detecting Opioid Overdose in the Emergency Department. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 27763703


  76. Turner CM, Santos GM, Arayasirikul S, Wilson EC. Brief Report: Psychosocial Predictors of Engagement in Sexual Risk Behavior Among Trans*female Youth Aged 16-24 Years in San Francisco. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 27861237


  77. John Walker, Deirdre Santos, Chris Rowe, Glenn-Milo Santos, Sue Jung, Phillip Coffin. A novel approach to naltrexone injections may reduce complications and increase adherence. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID:


  78. Behar E, Rowe C, Santos GM, Santos N, Coffin PO. Academic Detailing Pilot for Naloxone Prescribing Among Primary Care Providers in San Francisco. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 28218937


  79. Glenn-Milo Santos, Phillip Coffin, D. Santos, S. Huffaker, T. Matheson, Jason Euren, Anna DeMartini, Christopher Rowe, Judith Hahn, David Vlahov, Eric Vittinghoff, Steven L. Batki. Feasibility, acceptability, tolerability of targeted naltrexone for non-dependent methamphetamine – Using and binge-drinking men who have sex with men. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID:


  80. Jennifer P. Jain, Glenn-Milo Santos, Susan Scheer, Steve Gibson, Pierre-Cedric Crouch, Robert Kohn, Walter Chang, Adam Carrico. Rates and correlates of syphilis reinfection among men who have sex with men in San Francisco. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID:


  81. Flores JM, Santos GM, Makofane K, Arreola S, Ayala G. Availability and Use of Substance Abuse Treatment Programs Among Substance-Using Men Who Have Sex With Men Worldwide. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 28139146


  82. Turner CM, Coffin P, Santos D, Huffaker S, Matheson T, Euren J, DeMartini A, Rowe C, Batki S, Santos GM. Race/ethnicity, education, and age are associated with engagement in ecological momentary assessment text messaging among substance-using MSM in San Francisco. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 28237053


  83. Rowe C, Santos GM, Raymond HF, Coffin PO. Social mixing and correlates of injection frequency among opioid use partnerships. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2017. PMID: 28113118


  84. Jain J, Santos GM, Scheer S, Gibson S, Crouch PC, Kohn R, Chang W, Carrico AW. Rates and Correlates of Syphilis Reinfection in Men Who Have Sex with Men. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 27991843


  85. Ayala G, Santos GM. Will the global HIV response fail gay and bisexual men and other men who have sex with men? "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 27876454


  86. Behar E, Rowe C, Santos GM, Coffa D, Turner C, Santos NC, Coffin PO. Acceptability of Naloxone Co-Prescription Among Primary Care Providers Treating Patients on Long-Term Opioid Therapy for Pain. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 27815762


  87. Bender MS, Santos GM, Villanueva C, Arai S. Development of a Mobile Phone-Based Weight Loss Lifestyle Intervention for Filipino Americans with Type 2 Diabetes: Protocol and Early Results From the PilAm Go4Health Randomized Controlled Trial. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 27608829


  88. Behar E, Rowe C, Santos GM, Murphy S, Coffin PO. Primary Care Patient Experience with Naloxone Prescription. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 27621159


  89. Tonia C Poteat, JoAnne Keatley, Rose Wilcher, Chloe Schwenke. HIV epidemics among transgender populations: the importance of a trans-inclusive response. Journal of the International AIDS Society 2016. PMID:


  90. Scheim AI, Santos GM, Arreola S, Makofane K, Do TD, Hebert P, Thomann M, Ayala G. Inequities in access to HIV prevention services for transgender men: results of a global survey of men who have sex with men. Journal of the International AIDS Society 2016. PMID: 27431466


  91. Coffin PO, Behar E, Rowe C, Santos GM, Coffa D, Bald M, Vittinghoff E. Nonrandomized Intervention Study of Naloxone Coprescription for Primary Care Patients Receiving Long-Term Opioid Therapy for Pain. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 27366987


  92. Rowe C, Liou T, Vittinghoff E, Coffin PO, Santos GM. Binge drinking concurrent with anal intercourse and condom use among men who have sex with men. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 27241085


  93. Rowe C, Hern J, DeMartini A, Jennings D, Sommers M, Walker J, Santos GM. Concordance of Text Message Ecological Momentary Assessment and Retrospective Survey Data Among Substance-Using Men Who Have Sex With Men: A Secondary Analysis of a Randomized Controlled Trial. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 27230545


  94. Santos GM, Coffin P, Santos D, Huffaker S, Matheson T, Euren J, DeMartini A, Rowe C, Hahn JA, Vlahov D, Vittinghoff E, Batki SL. Feasibility, Acceptability, and Tolerability of Targeted Naltrexone for Nondependent Methamphetamine-Using and Binge-Drinking Men Who Have Sex with Men. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 26674372


  95. Rowe C, Matheson T, Das M, DeMicco E, Herbst JH, Coffin PO, Santos GM. Correlates of recent HIV testing among substance-using men who have sex with men. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 27000299


  96. Santos GM, Makofane K, Arreola S, Do T, Ayala G. Reductions in access to HIV prevention and care services are associated with arrest and convictions in a global survey of men who have sex with men. Sexually transmitted infections 2016. PMID: 26944344


  97. Raymond HF, Scheer S, Santos GM, McFarland W. Examining progress toward the UNAIDS 90-90-90 framework among men who have sex with men, San Francisco, 2014. AIDS care 2016. PMID: 26916991


  98. Rowe C, Santos GM, Vittinghoff E, Wheeler E, Davidson P, Coffin PO. Neighborhood-Level and Spatial Characteristics Associated with Lay Naloxone Reversal Events and Opioid Overdose Deaths. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2016. PMID: 26800987


  99. Rowe C, Santos GM, Behar E, Coffin PO. Correlates of overdose risk perception among illicit opioid users. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2015. PMID: 26754425


  100. Cohen JK, Santos GM, Moss NJ, Coffin PO, Block N, Klausner JD. Regular clinic attendance in two large San Francisco HIV primary care settings. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2015. PMID: 26654093


  101. Phillip O. Coffin, Christopher Rowe, Glenn-Milo Santos, Eric Vittinghoff, Eliza Wheeler. Characteristics and predictors of naloxone utilization in a community-based overdose prevention program. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2015. PMID:


  102. de Haan G, Santos GM, Arayasirikul S, Raymond HF. Non-Prescribed Hormone Use and Barriers to Care for Transgender Women in San Francisco. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2015. PMID: 26788772


  103. Visconti AJ, Santos GM, Lemos NP, Burke C, Coffin PO. Opioid Overdose Deaths in the City and County of San Francisco: Prevalence, Distribution, and Disparities. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2015. PMID: 26077643


  104. Santos GM, Jin H, Raymond HF. Pervasive Heavy Alcohol Use and Correlates of Increasing Levels of Binge Drinking among Men Who Have Sex with Men, San Francisco, 2011. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2015. PMID: 25895622


  105. Rowe C, Santos GM, Vittinghoff E, Wheeler E, Davidson P, Coffin PO. Predictors of participant engagement and naloxone utilization in a community-based naloxone distribution program. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2015. PMID: 25917125


  106. Asiimwe SB, Fatch R, Emenyonu NI, Muyindike WR, Kekibiina A, Santos GM, Greenfield TK, Hahn JA. Comparison of Traditional and Novel Self-Report Measures to an Alcohol Biomarker for Quantifying Alcohol Consumption Among HIV-Infected Adults in Sub-Saharan Africa. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2015. PMID: 26148140


  107. Coffin PO, Rowe C, Santos GM. Novel interventions to prevent HIV and HCV among persons who inject drugs. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2015. PMID: 25589380


  108. Scheim AI, Arreola S, Do T, Makofane K, Santos GM, Thomann M, Wilson PA, Ayala G. Potential for conceptual bias in studies of racial disparities in HIV infection. Journal of acquired immune deficiency syndromes (1999) 2015. PMID: 25296101


  109. Arreola S, Santos GM, Beck J, Sundararaj M, Wilson PA, Hebert P, Makofane K, Do TD, Ayala G. Sexual stigma, criminalization, investment, and access to HIV services among men who have sex with men worldwide. AIDS and behavior 2015. PMID: 25086670


  110. Behar E, Santos GM, Wheeler E, Rowe C, Coffin PO. Brief overdose education is sufficient for naloxone distribution to opioid users. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID: 25595053


  111. Rowe C, Santos GM, McFarland W, Wilson EC. Prevalence and correlates of substance use among trans female youth ages 16-24 years in the San Francisco Bay Area. Drug and alcohol dependence 2014. PMID: 25548025


  112. Ayala G, Makofane K, Santos GM, Arreola S, Hebert P, Thomann M, Wilson P, Beck J, Do TD. HIV Treatment Cascades that Leak: Correlates of Drop-off from the HIV Care Continuum among Men who have Sex with Men Worldwide "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID:


  113. Wilson EC, Santos GM, Raymond HF. Sexual mixing and the risk environment of sexually active transgender women: data from a respondent-driven sampling study of HIV risk among transwomen in San Francisco, 2010. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID: 25100405


  114. Hermanstyne KA, Santos GM, Vittinghoff E, Santos D, Colfax G, Coffin P. Event-level relationship between methamphetamine use significantly associated with non-adherence to pharmacologic trial medications in event-level analyses. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID: 25156227


  115. Hanckel B, Garcia L, Santos GM, Manalastas EJ. Assessing needs and capabilities: Towards an ICT resource to support HIV-positive gay men and other MSM in Southeast Asia "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID:


  116. Coffin PO, Santos GM, Colfax G, Das M, Matheson T, DeMicco E, Dilley J, Vittinghoff E, Raiford JL, Carry M, Herbst JH. Adapted personalized cognitive counseling for episodic substance-using men who have sex with men: a randomized controlled trial. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID: 24510401


  117. Phillip O. Coffin, G. Santos, M. Das, D. Santos, T. Matheson, J. Gasper, E. Vittinghoff, G. Colfax. Aripiprazole for the treatment of methamphetamine dependence: A randomized, double-blind, placebo-controlled trial. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID:


  118. Dennis J. Dacarett-Galeano, G.M. Santos, D. Santos, M. Das, Phillip O. Coffin. Spatial and neighborhood-level correlates of retention in pharmacologic efficacy trials. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID:


  119. Knight KR, Das M, DeMicco E, Raiford JL, Matheson T, Shook A, Antunez E, Santos GM, Dadasovich R, Dilley JW, Colfax GN, Herbst JH. A roadmap for adapting an evidence-based HIV prevention intervention: personal cognitive counseling (PCC) for episodic substance-using men who have sex with men. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID: 23412947


  120. Asher AK, Santos GM, Evans J, Dokubo EK, Lee TH, Martin JN, Deeks SG, Tobler LH, Busch M, Hunt PW, Page K. A closer look at hepatitis C clearance in HIV controllers: a response. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID: 25028914


  121. Santos GM, Wilson EC, Rapues J, Macias O, Packer T, Raymond HF. HIV treatment cascade among transgender women in a San Francisco respondent driven sampling study. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID: 24714446


  122. Santos GM, Rapues J, Wilson EC, Macias O, Packer T, Colfax G, Raymond HF. Alcohol and substance use among transgender women in San Francisco: prevalence and association with human immunodeficiency virus infection. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID: 24628655


  123. Santos GM, Coffin PO, Vittinghoff E, DeMicco E, Das M, Matheson T, Raiford JL, Carry M, Colfax G, Herbst JH, Dilley JW. Substance use and drinking outcomes in Personalized Cognitive Counseling randomized trial for episodic substance-using men who have sex with men. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2014. PMID: 24641808


  124. Pyun T, Santos GM, Arreola S, Do T, Hebert P, Beck J, Makofane K, Wilson PA, Ayala G. Internalized homophobia and reduced HIV testing among men who have sex with men in China. Asia-Pacific journal of public health 2014. PMID: 24554493


  125. Santos GM, Do T, Beck J, Makofane K, Arreola S, Pyun T, Hebert P, Wilson PA, Ayala G. Syndemic conditions associated with increased HIV risk in a global sample of men who have sex with men. Sexually transmitted infections 2014. PMID: 24431183


  126. Asher AK, Santos GM, Evans J, Dokubo EK, Lee TH, Martin JN, Deeks SG, Tobler LH, Busch M, Hunt PW, Page K. Human leukocyte antigen B*57 does not fully explain hepatitis C clearance in HIV controllers. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2013. PMID: 23939233


  127. Santos GM, Emenyonu NI, Bajunirwe F, Rain Mocello A, Martin JN, Vittinghoff E, Bangsberg DR, Hahn JA. Self-reported alcohol abstinence associated with ART initiation among HIV-infected persons in rural Uganda. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2013. PMID: 24169501


  128. Santos GM, Beck J, Wilson PA, Hebert P, Makofane K, Pyun T, Do T, Arreola S, Ayala G. Homophobia as a barrier to HIV prevention service access for young men who have sex with men. Journal of acquired immune deficiency syndromes (1999) 2013. PMID: 24135782


  129. Santos GM, Coffin PO, Das M, Matheson T, DeMicco E, Raiford JL, Vittinghoff E, Dilley JW, Colfax G, Herbst JH. Dose-response associations between number and frequency of substance use and high-risk sexual behaviors among HIV-negative substance-using men who have sex with men (SUMSM) in San Francisco. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2013. PMID: 23572012


  130. Ayala G, Makofane K, Santos GM, Beck J, Do TD, Hebert P, Wilson PA, Pyun T, Arreola S. Access to Basic HIV-Related Services and PrEP Acceptability among Men Who Have sex with Men Worldwide: Barriers, Facilitators, and Implications for Combination Prevention. Journal of sexually transmitted diseases 2013. PMID: 26316968


  131. Coffin PO, Santos GM, Das M, Santos DM, Huffaker S, Matheson T, Gasper J, Vittinghoff E, Colfax GN. Aripiprazole for the treatment of methamphetamine dependence: a randomized, double-blind, placebo-controlled trial. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2013. PMID: 23186131


  132. Colfax GN, Santos GM, Das M, Santos DM, Matheson T, Gasper J, Shoptaw S, Vittinghoff E. Mirtazapine to reduce methamphetamine use: a randomized controlled trial. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2011. PMID: 22065532


  133. Santos GM, Das M, Colfax GN. Interventions for non-injection substance use among US men who have sex with men: what is needed. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2011. PMID: 21404011


  134. Colfax G, Santos GM, Chu P, Vittinghoff E, Pluddemann A, Kumar S, Hart C. Amphetamine-group substances and HIV. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2010. PMID: 20650520


  135. Das M, Chu PL, Santos GM, Scheer S, Vittinghoff E, McFarland W, Colfax GN. Decreases in community viral load are accompanied by reductions in new HIV infections in San Francisco. PloS one 2010. PMID: 20548786


  136. Das M, Santos D, Matheson T, Santos GM, Chu P, Vittinghoff E, Shoptaw S, Colfax GN. Feasibility and acceptability of a phase II randomized pharmacologic intervention for methamphetamine dependence in high-risk men who have sex with men. "HIV within the House Ball Community and the Promise of Community-based Social Structures for Intervention and Support" 2010. PMID: 20397286