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American Indian and Alaska Native (AI/AN) communities experience a disproportionate burden of substance use disorders (SUDs) alongside persistent barriers to culturally responsive care and research participation. Despite this need, AI/AN populations remain underrepresented in substance use research, in part due to historical and ongoing systemic inequities, including research practices that have not adequately respected Tribal sovereignty or incorporated Indigenous knowledge systems. This commentary synthesizes research conducted within the National Institute on Drug Abuse (NIDA) Clinical Trials Network (CTN) focused on AI/AN communities, identifies key lessons learned from this body of work, and offers recommendations for future research.

First, we provide an overview of CTN-supported studies involving AI/AN populations, highlighting both the diversity of substance use patterns across communities and the feasibility of conducting rigorous, culturally responsive research. Second, we synthesize lessons learned from these studies and related literature, including the importance of long-term relationship building, the need for culturally responsive research frameworks, structural barriers to implementation, and workforce and infrastructure challenges. Third, we present recommendations for the field, emphasizing the central role of community-based participatory research (CBPR) and Tribal participatory research (TPR), the integration of Indigenous knowledge systems, and the importance of Tribal data sovereignty and community-led dissemination.

Collectively, this commentary argues that sustainable progress in addressing SUDs among AI/AN populations requires a fundamental shift toward community-engaged, culturally responsive, and equity-focused research partnerships. The experiences of the CTN AI/AN Special Interest Group demonstrate that such approaches are not only feasible but essential for advancing both scientific knowledge and community health.

Related protocols: CTN-0020-A-1, CTN-0033-Ot-1, CTN-0033-Ot-2, CTN-0033-Ot-3, CTN-0033-Ot-4, CTN-0033-Ot-5, CTN-0044-A2, CTN-0078-Ot, CTN-0096, CTN-0096-A-1, CTN-0118, CTN-0123, CTN-0129

This is the Results Article for CTN-0033-Ot-1 and CTN-0033-Ot-5.

American Indians and Alaska Natives (AI/ANs) experience significant disparities in health status and access to care. Furthermore, only limited data are available on substance use, mental health disorders, and treatment needs for this population. Addressing such disparities and developing culturally relevant, effective interventions for AI/AN communities require participatory research. The Western States Node of the National Drug Abuse Treatment Clinical Trials Network (CTN) partnered with two American Indian substance abuse treatment programs as part of protocol CTN-0033-Ot-5: an urban health center and a reservation-based program to assess client characteristics, drug use patterns, and treatment needs. Data collected by staff members at the respective programs from urban (n=74) and reservation (n=121) clients were compared. Additional sub-analysis examined patients reporting regular opioid use and mood disorders. Findings indicate that urban clients were more likely to report employment problems, polysubstance abuse, and a history of abuse. Reservation-based clients reported having more severe medical problems and a greater prevalence of psychiatric problems. Clients who were regular opioid users were more likely to report having a chronic medical condition, suicidal thoughts, suicide attempts, polysubstance abuse, and IV drug use. Clients who reported a history of depression had twice as many lifetime hospitalizations and more than five times as many days with medical problems.

Conclusions: Findings from this project provide information about the patterns of substance abuse and the importance of comprehensive assessments of trauma and comorbid conditions. Results point to the need for integrative coordinated care and auxiliary services for AI/AN clients seeking treatment for substance use disorders. In addition to more details about the epidemiology of alcohol and drug use disorders among AI/ANs, there is also the need for more information about the treatment system this population has access to.

Related protocols: CTN-0033-Ot-1, CTN-0033-Ot-5

The Methamphetamine and Other Drugs (MOD) in American Indian and Alaska Native communities (AIAN) project grew from NIDA?s commitment to reducing health disparities with a specific emphasis on a better understanding of the epidemiology and treatment of drug abuse, and its health consequences in minority populations in general, and AIAN communities in particular. Because few data exist on methamphetamine and other drug use in AIAN communities, NIDA’s National Drug Abuse Treatment Clinical Trials Network (CTN) funded several exploratory and developmental projects in order to develop collaborative research partnerships with AIAN communities. Each participating Node has specific processes in place for reporting and disseminating research findings that require Tribal approval from its respective research partners and findings from these projects will be presented in future publications and at professional meetings — in full partnership with our community research partners.

The purpose of this brief report is to describe the process followed by each of the Nodes as they have developed their research partnerships with AIAN communities; lessons learned and recommendations for others interested in ethical research with AIAN communities are also presented.

Related protocols: CTN-0033-Ot, CTN-0033-OT-1, CTN-0033-Ot-2, CTN-0033-Ot-3, CTN-0033-Ot-4, CTN-0033-Ot-5