Investigating the effectiveness of tirzepatide added to ixekizumab for psoriasis and obesity
Official title: A Phase 4, Prospective, Open-Label, Single Arm Study to Assess the Effectiveness of Tirzepatide After Initiation of Ixekizumab in Adult Participants With Moderate-to-Severe Plaque Psoriasis and Obesity or Overweight in Clinical Practice
Run by Eli Lilly and Company · NCT06857942 · Data updated 2026-11-12
This study is testing if adding a weight-loss medication called tirzepatide to an existing psoriasis treatment can help people with moderate-to-severe plaque psoriasis who are also overweight or obese.
Quick facts
| Phase | Phase 4 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 200 (estimated) |
| Sponsor | Eli Lilly and Company Industry-sponsored |
| Drugs / interventions | ixekizumab |
| Locations | 38 sites (Phoenix, Arizona and 37 other locations) |
| Status | Recruiting |
| Started | March 19, 2025 |
| Main results expected | May 2028 |
| Study ends | May 2028 |
| Registry record updated | November 4, 2026 |
| Trial ID | NCT06857942 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are individuals diagnosed with moderate-to-severe plaque psoriasis and a BMI of 27 or greater, who have been on ixekizumab for approximately three months.
✕Probably not a fit
Patients who have been on ixekizumab for more than four months or have previously used tirzepatide or similar medications may 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 aims to evaluate how effective the addition of tirzepatide is when used alongside ixekizumab in patients with moderate-to-severe plaque psoriasis who are also overweight or obese. Participants must have been on ixekizumab for about three months before starting tirzepatide. The study will last for up to 12 months and will take place in standard clinical practice settings. The focus is on patients who have at least one weight-related comorbidity.
Why it matters
Potential benefit: If successful, this approach could improve treatment outcomes for patients with psoriasis and obesity, potentially leading to better management of both conditions.
How similar studies have gone: While this specific combination has not been extensively tested, similar approaches using other GLP-1 receptor agonists have shown promise in managing obesity-related conditions.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Have a diagnosis of moderate-to-severe plaque PsO, as defined by a dermatologist or other experienced clinician treated PsO (for example, allergologist, nurse practitioner or physician assistant) * Have body mass index (BMI) of 30 kilograms per meter squared (kg/m²) or greater (obesity) or 27 kg/m² to \<30 kg/m² (overweight) in the presence of at least 1 weight-related comorbid condition (hypertension, dyslipidemia, type 2 diabetes mellitus, obstructive sleep apnea, or cardiovascular diseases). * Must have initiated treatment with ixekizumab for approximately 3 months (± 1 month) prior to decision to add tirzepatide. * Must be able to initiate tirzepatide (Day 0) within 30 days of treatment decision (baseline/screening). Exclusion Criteria: * Have currently received ixekizumab for more than 4 months or less than 2 months. * Have had any exposure to tirzepatide or other glucagon-like peptide-1 receptor agonist (GLP-1 RAs), for example, dulaglutide, liraglutide, or semaglutide. * Are currently enrolled in any other clinical study. Other exclusions * Have a known hypersensitivity to tirzepatide or to any of its component. * Have a personal or family history of medullary thyroid cancer. * Have multiple endocrine neoplasia type 2. * Have type I diabetes mellitus. * Have a history of chronic or acute pancreatitis at any time before screening (Visit 1). * Have a history of proliferative diabetic retinopathy, diabetic maculopathy, or nonproliferative diabetic retinopathy that requires acute treatment. * Have a history of ketoacidosis or hyperosmolar state/coma. * Have a history of severe hypoglycemia and hypoglycemia unawareness within the 6 months before screening. * Have a history of severe gastrointestinal complications, including gastroparesis, gastroesophageal reflux disease, dyspepsia, chronic nausea/constipation/vomiting.
Where it's running
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Medical Dermatology Specialists
Phoenix, Arizona, United States Recruiting -
First OC Dermatology Research Inc
Fountain Valley, California, United States Recruiting -
Center For Dermatology Clinical Research, Inc.
Fremont, California, United States Recruiting -
Metropolis Dermatology
Los Angeles, California, United States Recruiting -
Northridge Clinical Trials
Northridge, California, United States Recruiting -
NeoClinical Research
Hialeah, Florida, United States Recruiting
Show 32 more locations
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Skin Care Research
Hollywood, Florida, United States Recruiting -
Encore Medical Research
Hollywood, Florida, United States Recruiting -
MOORE Clinical Research, Inc. d/b/a TrueBlue Clinical Research
Tampa, Florida, United States Recruiting -
TruDerm & TruSpa
Wellington, Florida, United States Recruiting -
Southeast Research Specialists
Douglasville, Georgia, United States Recruiting -
Dawes Fretzin Clinical Research Group, LLC
Indianapolis, Indiana, United States Recruiting -
The Indiana Clinical Trials Center, PC
Plainfield, Indiana, United States Recruiting -
Equity Medical - Bowling Green
Bowling Green, Kentucky, United States Recruiting -
Dermatology and Skin Cancer Specialists, LLC
Rockville, Maryland, United States Recruiting -
Metro Boston Clinical Partners
Brighton, Massachusetts, United States Recruiting -
David Fivenson, MD, PLC
Ann Arbor, Michigan, United States Recruiting -
The Derm Institute of West Michigan
Caledonia, Michigan, United States Recruiting -
Skin Cancer and Dermatology Institute - Reno
Reno, Nevada, United States Recruiting -
Stracskin
Portsmouth, New Hampshire, United States Recruiting -
Psoriasis Treatment Center of Central New Jersey
East Windsor, New Jersey, United States Recruiting -
Care Access - Hoboken
Hoboken, New Jersey, United States Recruiting -
Equity Medical
New York, New York, United States Recruiting -
Revival Research Institute, LLC
Cary, North Carolina, United States Recruiting -
Onsite Clinical Solutions - Huntersville
Huntersville, North Carolina, United States Recruiting -
Optima Research - Boardman
Boardman, Ohio, United States Recruiting -
Oregon Dermatology and Research Center
Portland, Oregon, United States Recruiting -
Dermatology Associates of Plymouth Meeting
Plymouth Meeting, Pennsylvania, United States Recruiting -
Columbia Dermatology & Aesthetics
Columbia, South Carolina, United States Recruiting -
DelRicht Research - Thompson's Station
Smyrna, Tennessee, United States Recruiting -
Bellaire Dermatology Associates
Bellaire, Texas, United States Recruiting -
Modern Research Associates, PLLC
Dallas, Texas, United States Recruiting -
Center for Clinical Studies
Houston, Texas, United States Recruiting -
Austin Institute for Clinical Research
Pflugerville, Texas, United States Recruiting -
Texas Dermatology and Laser Specialists
San Antonio, Texas, United States Recruiting -
Center for Clinical Studies
Webster, Texas, United States Recruiting -
Tanner Clinic
Layton, Utah, United States Recruiting -
Bellevue Dermatology Clinic
Bellevue, Washington, United States Recruiting
Study contacts
- Study coordinator: Trial questions or participation questions: 1-877-CTLILLY (1-877-285-4559) or
- Email: LillyTrials@Lilly.com
- Phone: 1-317-615-4559
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.