Conditions: Opioid Use Disorder
Allocation: RANDOMIZED | Intervention model: CROSSOVER
Enrollment: 16
Healthy volunteers: no

Brief summary:
Significant public health concerns have arisen from the intravenous misuse of oxymorphone, a potent mu-opioid pain medication. However, little is known about its abuse potential relative to other mu-opioid analgesics. The present study is designed to examine the abuse liability of intravenous oxymorphone compared to other mu opioid agonists (oxycodone, and hydromorphone) among physically dependent opioid abusers.

Detailed description:
Significant public health concerns have arisen from the misuse of oxymorphone, a potent mu-opioid pain medication approved by the Food and Drug Administration as Opana and Opana ER. However, little is known about its abuse potential relative to other mu opioid analgesics. The present study is designed to examine the abuse liability of intravenous oxymorphone compared to other mu opioid agonists (oxycodone and hydromorphone). Participants who are physically dependent on opioids and who meet DSM 5 criteria for Opioid Use Disorder will complete the study across 2 sites, New York State Psychiatric Institute (NYSPI) and the University of Kentucky; a total of 6 additional participants across 2 sites will complete a pilot phase of the study in order to establish comparable opioid dose-response functions based on subjective ratings of Drug Liking. All participants will reside in clinical inpatient units for the duration of the studies (both the 8- to 9-week main and 4- to 5-week pilot studies; please note that the pilot study is identical in design to the first 4-5 weeks of the main study). The study design is based on the 2017 FDA Assessment of Abuse Potential of Drugs: Guidance for Industry \[Center for Drug Evaluation and Research (CDER), 2017\], which suggests the use of a double-blind, positive- and placebo-controlled design that includes a qualification phase and VAS measure of Drug Liking. The proposed study also examines the reinforcing effects of oxymorphone and other mu opioid agonists using two different drug self-administration procedures, namely Drug versus Money and Drug versus Drug choice procedures.

Arms:
arm 1: Intravenous (IV) Dose Range: 1.8, 3.2, 5.6, 10 mg/70kg of the participant's body weight arm 2: IV Dose Range: 10, 18, 32, 56 mg/70kg of the participant's body weight arm 3: IV Dose Range: 3.2, 5.6, 10, 18 mg/70kg of the participant's body weight arm 4: IV saline

Interventions: intervention 1: Intravenous Challenge Drug
Intervention descriptions: intervention 1: Intravenous administration of opioid drugs (oxycodone, oxymorphone, hydromorphone), for the purpose of comparison of their abuse potential among each other, and in comparison to placebo (saline).

Protocol document:
Prot_SAP_000.pdf: