BACKGROUND:
Equitable participation in clinical trials in South Africa remains constrained by historical mistrust, inequities, and limited research literacy. Effective community engagement is central to ethical trial conduct, acceptability, and inclusive recruitment and retention. This commentary presents practical lessons from community engagement and site-level operations at the South African Medical Research Council (SAMRC), aligned with the congress sub-theme Health Without Borders: Equity, Inclusion, and Sustainability.

METHODS:
Insights were derived from routine trial readiness, participant support, and community–site interface activities. Engagement strategies included collaboration with Community Advisory Boards (CABs) to refine study materials. Partnerships with communities, traditional leaders, and multilingual community forums to address misconceptions and improve research literacy. At sites, Clinical Research Coordinators integrated community feedback into participant flow, scheduling, and screening processes, while Research Managers applied these insights to feasibility assessments, resource planning, and risk mitigation. Principal Investigators balanced protocol requirements with context-responsive operational adaptations. Multi-site collaboration through Site Initiation Visits (SIVs) promoted standardized procedures, shared learning, and consistent protocol implementation. Engagement approaches combined digital platforms (WhatsApp, virtual meetings, SMS, participant letters) with in-person activities, including home visits, clinic-based discussions, community sessions, and roadshows, ensuring inclusivity in low connectivity settings. Initiatives targeted community representatives, peer educators, and engagement teams, with training on research ethics, trial procedures, and misinformation.

RESULTS:
Early coordination between community teams and site leadership improved alignment between community expectations and study procedures. Contextually tailored materials reduced misconceptions, while hybrid communication strategies broadened reach. In-person engagement remained essential in underserved communities. Persistent historical mistrust underscored the need for sustained engagement structures and long-term partnerships.

CONCLUSIONS:
Community-centered engagement with clinical site operations is critical for advancing equity, inclusion, and sustainability in clinical trials. Flexible, context-responsive strategies and cross-team collaboration strengthen trust, enhance research literacy, and support improved recruitment and retention outcomes.