Optimizing retention strategies for opioid use disorder pharmacotherapy: The retention phase of the CTN-0100 trial (RDD)

Contemp Clin Trials. 2025 Mar:150:107816. doi: 10.1016/j.cct.2025.107816. Epub 2025 Jan 20.

Abstract

Introduction and background: The three medications approved to address OUD are effective in decreasing opioid use and morbidity and mortality; however, their utility is limited by high rates of dropout from treatment. The CTN-0100 trial will develop an evidence base for strategies to improve retention on buprenorphine and extended-release naltrexone.

Research design and methods: The National Drug Abuse Treatment Clinical Trials Network (CTN) study CTN-0100, "Optimizing Retention, Duration and Discontinuation Strategies for Opioid Use Disorder Pharmacotherapy" (RDD), is a multicenter, randomized, non-blinded trial enrolling more than a thousand patients from 18 community-based substance use disorder treatment programs. Participants are adult volunteers seeking to initiate medication treatment for OUD (MOUD). Individuals choose between buprenorphine or extended-release injectable naltrexone. The trial randomizes participants choosing buprenorphine, in a 3 × 2 factorial design, to a medication condition (standard-dose sublingual buprenorphine, high-dose sublingual buprenorphine, or extended-release injectable buprenorphine) and to a behavioral condition (Medical Management or Medical Management plus a digital therapeutic (smartphone) app). Individuals choosing extended-release naltrexone are randomized only to a behavioral condition. Participants receive study medication for 74 weeks and are then followed for a further 24 weeks. The primary outcome is successful retention on MOUD at 26 weeks (six months), with 50- and 74-week retention among the secondary outcomes.

Discussion/conclusion: Dropout from treatment is a major barrier to the effectiveness of MOUD. The CTN-0100 study will determine whether strategies such as high dose sublingual or extended-release buprenorphine, or an app-based behavioral intervention improve retention on MOUD.

Clinicaltrials: gov Identifier: NCT04464980.

Keywords: Automated psychosocial intervention; Buprenorphine; Naltrexone; Opioid use disorder; Opioids; Treatment.

Publication types

  • Clinical Trial Protocol

MeSH terms

  • Administration, Sublingual
  • Adult
  • Buprenorphine* / administration & dosage
  • Buprenorphine* / therapeutic use
  • Delayed-Action Preparations
  • Female
  • Humans
  • Male
  • Multicenter Studies as Topic
  • Naltrexone* / administration & dosage
  • Naltrexone* / therapeutic use
  • Narcotic Antagonists* / administration & dosage
  • Narcotic Antagonists* / therapeutic use
  • Opiate Substitution Treatment* / methods
  • Opioid-Related Disorders* / drug therapy
  • Patient Dropouts / statistics & numerical data
  • Randomized Controlled Trials as Topic

Substances

  • Buprenorphine
  • Naltrexone
  • Narcotic Antagonists
  • Delayed-Action Preparations

Associated data

  • ClinicalTrials.gov/NCT04464980