Ixekizumab With or Without Tirzepatide in Adults With Psoriasis and Overweight or Obesity: A Phase 3b - Report - MDSpire
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Efficacy of Ixekizumab Alone or Combined with Tirzepatide in Psoriasis Patients with Overweight or Obesity: A Phase 3b Study

  • By

  • Mark Lebwohl

  • Andrew Blauvelt

  • Cynthia E. Kartman

  • Cianna Leatherwood

  • Kenneth B. Gordon

  • Naveed Sattar

  • Luis Puig

  • Joseph F. Merola

  • Kimberly Siu

  • Rona Wang

  • Luna Sun

  • Ann Leung

  • Najwa Somani

  • Maria Jose Rueda

  • Anabela Cardoso

  • Mark C. Genovese

  • April W. Armstrong

  • Bruce Strober

  • July 1, 2026

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Clinical Report: Efficacy of Ixekizumab Alone or Combined with Tirzepatide

Overview

The TOGETHER-PsO trial evaluated the efficacy and safety of ixekizumab alone versus in combination with tirzepatide in patients with moderate to severe psoriasis and overweight or obesity.

Background

Psoriasis is frequently associated with overweight and obesity, affecting 60% to 78% of patients. This comorbidity complicates treatment outcomes and increases the risk of psoriatic arthritis and cardiovascular issues.

Data Highlights

GroupComplete Skin ClearanceWeight Reduction
Ixekizumab + Tirzepatide27%≥10%
Ixekizumab Alone6%≥10%

Key Findings

  • The combination of ixekizumab and tirzepatide achieved a primary endpoint of superiority in skin clearance and weight loss.
  • 27% of patients on combination therapy achieved complete skin clearance and at least 10% weight reduction at 36 weeks.
  • Only 6% of patients receiving ixekizumab alone achieved the same outcomes.
  • The trial was conducted at 72 sites in the US and included adults with moderate to severe plaque psoriasis.
  • No new safety concerns were reported with the combination therapy.

Clinical Implications

The findings suggest that combining ixekizumab with tirzepatide may enhance treatment efficacy for patients with psoriasis and obesity. Clinicians should consider this combination therapy to improve patient outcomes in this population.

Conclusion

The TOGETHER-PsO trial demonstrates that ixekizumab combined with tirzepatide offers significant benefits in managing psoriasis and obesity, warranting further exploration in clinical practice.

Related Resources & Content

  1. Conexiant, Combination Therapy Shows Potential in Psoriasis, Obesity
  2. Conexiant, Combo Therapy for Psoriasis With Obesity
  3. JAMA Dermatology, Errors in Table 2
  4. PubMed, Ixekizumab With or Without Tirzepatide in Adults With Psoriasis and Overweight or Obesity
  5. PMC, S3 Guideline for the treatment of psoriasis vulgaris
  6. Dermatology and Therapy — Efficacy and Safety of Tildrakizumab for Treatment of Moderate-to-Severe Scalp Psoriasis in Patients with Obesity Over 52 Weeks
  7. PubMed, The association between obesity and efficacy of psoriasis therapies
  8. S3 Guideline for the treatment of psoriasis vulgaris, adapted from EuroGuiDerm – part 1: Treatment recommendations and monitoring - PMC
  9. Ixekizumab With or Without Tirzepatide in Adults With Psoriasis and Overweight or Obesity: A Phase 3b Randomized Clinical Trial - PubMed

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