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NCT Number: NCT07475702

Moon and Sun Brothers: A Community Prevention Intervention (Hermanos de Luna y Sol)

The goal of this quasi-experimental, community intervention is to reduce HIV sexual risk among Latino immigrant bisexual men or men who have sex with men. The main questions the study aims to answer are:

Does the intervention improve sexual risk behaviors? Does the intervention increase self-esteem and social support? Are self-esteem and social support mediators in the link between the intervention and sexual risk? Researchers will compare information from the intervention versus control participants to answer the above questions.

Participants in the intervention arm will take part in:

* One day-long (8-hour) group retreat. * Weekly discussion groups. * Community events and civic engagement activities. * Prevention counseling. Participants in the control arm will not be part of any activity.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

San Francisco State University, San Francisco, California, United States

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Identify as male.
  • Latino/x/e
  • Report having sex with men only, or both men and women in the last 12 months.
  • Speaks, reads/writes in Spanish.
  • ≥18 years of age.
  • Has access to a computer, laptop, tablet or smart phone device.
  • Be willing to participate in the study.
  • Be able to provide informed consent.

Exclusion criteria

  • Populations younger than 18 years.
  • Individuals who have participated in an Hermanos de Luna y Sol program in either the intervention or control group locations.

Treatment and study plan

Moon and Sun Brothers: A Community Prevention Intervention

Behavioral

The is a community-based, group intervention delivered in Spanish, using a quasi-experimental design, to reduce HIV sexual risk among Hispanic immigrants who identify as gay/bisexual men or men who have sex with men (GBMSM).

Primary outcomes

  1. Self-reported condomless anal intercourse

    Time frame: From baseline to end the of intervention, at twelve months.

Secondary outcomes

  1. Self-Esteem

    Time frame: From enrollment to the end of intervention at 12 months

    We will assess self-esteem using the 20-item Inner Strength Scale adapted for this study with response options and corresponding scores as follows: never (0), rarely (1), sometimes (2), often (4) and very often (4). The scores ranged from 0 to 80 with higher scores denoting higher degrees of inner strength.

  2. Social Support

    Time frame: From enrollment to the end of intervention, at 12 months.

    We will assess social support using a 20-item questionnaire developed by Krause, measuring social embeddedness (contact with friends and family) and enacted support from others (which entail emotional, tangible and informational support). These items are scored (coding in parentheses) based on the following responses: never (0), rarely (1), sometimes (2), often (3) and very often (4). The scores range from 0-80, with higher scores denoting a higher degree of social support.

Study contacts

Contact information is provided by the study sponsor or research team.

Emma V Sanchez-Vaznaugh, ScD

CONTACT

[email protected]

415-405-2832

Rita Melendez, PhD

CONTACT

[email protected]

Sponsors and collaborators

Lead sponsor

San Francisco State University

Other

Collaborators

  • Chicago Queer Latine Collaborative
  • Drexel University
  • National Institute of Mental Health (NIMH)

Registry information

Important dates

Study start
2026
Primary completion
2028
Study completion
2028
First posted
Mar 16, 2026
Registry last updated
Mar 25, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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