Clinical Trials Network

Western States Node

WSN LogoThe Western States Node is one of thirteen nodes in the NIDA Clinical Trials Network. The National Drug Abuse Treatment Clinical Trials Network (CTN) was created to enhance the delivery of scientifically based treatments to patients with substance abuse disorders. For more information about the Clinical Trials Network, please visit the website at

Current Studies

CTN-0067: (In developmentComparing Treatments for HIV-Infected Opioid Users in an Integrated Care Effectiveness Study (CHOICES) Scale-Up

CTN-0062A Phased-Implementation Feasibility and Proof-of-Concept Study to Assess Incorporating the NIDA CTN Common Data Elements into the Electronic Health Record in Large Primary Care Settings (CDE-EHR-PC)

CTN-0055: Comparing Treatments for HIV-Positive Opioid Users in an Integrated Care Effectiveness Study (CHOICES)

CTN-0053: Achieving Cannabis Cessation -- Evaluating N-Acetylcystein Treatment (ACCENT)

CTN-0050: Long Term Follow-Up of START Patients