Behavioral Pharmacological Examination of a Novel Buprenorphine Induction Method Among Individuals Who Use Fentanyl

The opioid overdose epidemic has persisted for several decades and is now further complicated by the permeation of fentanyl into the illicit opioid supply. While the effectiveness of medications to treat opioid use disorder (MOUD) have been well documented in the literature, the addition of fentanyl to the drug supply has complicated the initiation of MOUD, especially buprenorphine. Naloxone, an opioid antagonist, is currently utilized to reverse opioid overdose by displacing less-competitive ligands which bind at the mu-opioid receptor. Because induction to buprenorphine in the age of fentanyl is uncomfortable and can take several days to stabilize a patient on a therapeutic dose, the use of naloxone prior to buprenorphine can aid in a safe and rapid transition to buprenorphine treatment, without the effect of unintended prolonged precipitated withdrawal which can occur following the displacement of fentanyl by buprenorphine on the mu-opioid receptor. Therefore, this project will assess feasibility and acceptability of naloxone-facilitated buprenorphine initiation using a single-ascending dose design. The investigators will examine whether a single dose of buprenorphine is tolerated following administration of naloxone among a small group of individuals. If the dose is tolerated, the investigators will administer a larger dose among another small group of individuals. The investigators will examine the tolerability of up to 4 doses of buprenorphine following naloxone. This buprenorphine induction method has been characterized in case studies but it has not been evaluated in an empirical, systematic way in a controlled setting. This study will take place within an residential facility at Johns Hopkins Bayview Medical Campus, and will have immediate, real-world applicability in establishing a rapid, safe, and effective option to transition people with chronic fentanyl use to buprenorphine treatment.

NCT Number	NCT06089707
Lead Sponsor	University of Maryland, Baltimore Collaborators: Cure Addiction Now, Johns Hopkins University
Conditions	Opioid Use Disorder
Enrollment	3 participants
Start Date	2024-01-09
Primary Completion	2030-01-01 (estimated)
Study Completion	2030-01-01 (estimated)
Updated on ClinicalTrials.gov	2026-07-27