Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 65 and up

Effects of prescription opioids on brain structure and cognition in older adults with chronic pain

Official title: Imaging, Cognition, and Opioids in Older Adults With Chronic Pain (I-COAP) Trial

Run by Mayo Clinic · NCT06837857 · Data updated 2026-11-12

This study is testing how taking prescription opioids affects the brain and thinking skills in older adults with chronic pain.

More Pain, Chronic trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages65 Years and up
SexAll
Enrollment200 (estimated)
SponsorMayo Clinic
Academic / other
Locations1 site (Rochester, Minnesota)
StatusRecruiting
StartedApril 16, 2025
Main results expectedJuly 1, 2029
Study endsDecember 31, 2029
Registry record updatedJanuary 8, 2026
Trial IDNCT06837857 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 65 and older with chronic knee or shoulder pain of moderate to severe intensity.

Probably not a fit

Patients with severe mental health disorders, significant cognitive impairment, or contraindications to MRI will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the relationship between prescription opioid use and brain structural changes in older adults suffering from chronic pain. It will involve 200 participants aged 65 and older, who will receive either opioids or a placebo as part of a multimodal pain treatment pathway over six weeks. Participants will undergo various assessments, including MRI scans and cognitive testing, to evaluate changes in brain structure and function. The study aims to provide insights into the impact of opioids on brain health in this demographic.

Why it matters

Potential benefit: If successful, this study could help clarify the effects of prescription opioids on brain health, potentially guiding safer pain management strategies for older adults.

How similar studies have gone: While there have been studies on opioid effects, this specific investigation into brain structure and cognition in older adults is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* 65 years of age or older
* Pain for longer than 3 months (chronic)
* Moderate to severe pain nearly every day (averaged PEG score \>5)
* Persistent pain despite use of \>1 analgesic (Tylenol, Ibuprofen, lidocaine patch, etc)

Exclusion Criteria:

* Untreated severe/uncontrolled Mental health (schizophrenia, bipolar disorder, psychosis, history of suicidality, depression or anxiety, PTSD)
* Severe liver (cirrhosis) or kidney disease (ESRD on dialysis or GFR\< 30)
* Cognitive impairment (Kokmen Short Test of Mental Status score \< 29)
* Life expectancy \< 12 months
* Contraindications to MRI
* Non-English speaking
* Opioid use within the past 6 months
* Contraindications or previous intolerance to prescription opioids
* Substance use disorder or high-risk for opioid-related adverse effects (Opioid Risk Tool ≥ 8)
* Residence outside of Minnesota or Wisconsin during opioid intervention period
* Another pain generator that is greater than their knee or shoulder or low back pain
* Anticipated surgery for joint replacement (Knee or shoulder) sooner than 3 months.

Where it's running

  • Mayo Clinic in Rochester
    Rochester, Minnesota, United States
    Recruiting

Study contacts

  • Principal investigator: Nafisseh Warner — Mayo Clinic

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.