Investigating Lu AG22515 for Thyroid Eye Disease

Interventional, Open-label, Single-group, Long-term Follow-up Trial of Lu AG22515 in Patients With Moderate-to-severe Thyroid Eye Disease

Phase 1 Interventional H. Lundbeck A/S · NCT06557850

This study is testing if a new treatment called Lu AG22515 can help adults with moderate-to-severe thyroid eye disease reduce eye bulging and improve their symptoms.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment19 (estimated)
Ages18 Years and up
SexAll
SponsorH. Lundbeck A/S Industry-sponsored
Drugs / interventionsrituximab, tocilizumab, methotrexate
Locations5 sites (Banja Luka, Republika Srpska and 4 other locations)
Trial IDNCT06557850 on ClinicalTrials.gov

What this trial studies

This trial evaluates the effects of Lu AG22515 in adults suffering from moderate-to-severe thyroid eye disease (TED), an autoimmune condition linked to Graves' Disease. The study aims to determine if this treatment can improve proptosis, a key symptom characterized by bulging eyes. Participants will be assessed based on specific criteria, including the severity of their symptoms and thyroid hormone levels. The trial is designed to gather data on the efficacy of Lu AG22515 in alleviating the symptoms of TED.

Who should consider this trial

Good fit: Ideal candidates are adults with Graves' disease-related thyroid eye disease symptoms, specifically those with proptosis and a Clinical Activity Score indicating moderate to severe disease.

Not a fit: Patients with optic neuropathy or significant visual impairment due to thyroid eye disease may not benefit from this treatment.

Why it matters

Potential benefit: If successful, this treatment could significantly improve the quality of life for patients suffering from moderate-to-severe thyroid eye disease.

How similar studies have performed: While this approach is novel, previous studies have explored treatments for thyroid eye disease, but the specific efficacy of Lu AG22515 remains untested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* The participant has Graves' disease associated Thyroid Eye Disease (TED) symptoms characterized by:
* ophthalmologic symptom onset \<12 months prior to the Baseline Visit
* proptosis ≥3 millimeter (mm) above normal for race and sex measured using the Hertel exophthalmometer (at the Screening Visit and the Baseline Visit) in the most severe eye
* Clinical Activity Score (CAS) ≥3 in the most severe eye at the Screening Visit.
* The participants must be euthyroid or have mild hypo- or hyperthyroidism (defined as free thyroxin \[FT4\] and/or free triiodothyronine \[FT3\] levels not exceeding the normal limits +/-50%) at the Screening Visit.

Exclusion Criteria:

* The participant has a decreased best-corrected visual acuity due to optic neuropathy, defined as a decrease in vision of 2 lines on the Snellen chart, new visual field defect, or colour defect secondary to optic nerve involvement, within 6 months prior to the Screening Visit.
* The participant has corneal decompensation unresponsive to medical management.
* The participant has a decrease in proptosis of ≥2 mm between the Screening Visit and the Baseline Visit.
* The participant has a decrease in CAS of ≥2 points between the Screening Visit and the Baseline Visit.
* The participant has had previous orbital irradiation or surgery for TED.
* The participant requires immediate surgical ophthalmological intervention or has other eye conditions impacting the assessments.
* The participant has contraindications for an magnetic resonance imaging (MRI) scan.
* The participant has an active infection at Baseline or recent serious infection (for example, requiring hospitalization) within 8 weeks prior to the Baseline Visit.
* The participant takes any of the following disallowed or restricted concomitant medications (the list is not comprehensive):
* Disallowed: any investigational products within 30 days or 5 half-lives, whichever is longer, prior to the Screening Visit, systemic corticosteroids within 6 weeks prior to the Screening Visit (topical steroids for dermatological conditions, inhaled or intranasal steroids are allowed), systemic immunosuppressive/immunomodulating drugs (for example, rituximab, tocilizumab, methotrexate, cyclosporine, azathioprine, mycophenolate-sodium/mofetil, Janus kinase inhibitors) within 5 half-lives prior to the Screening Visit, live attenuated vaccines within 30 days prior to the Baseline Visit, biotin within 1 day prior to the Screening Visit.
* Allowed with restriction: stable dose for \>3 weeks prior to the Screening Visit of selenium. Inactivated/killed/RNA-based vaccinations are allowed provided they are not administered within 5 days before/after any investigational medicinal product (IMP) trial visits.

Where this trial is running

Banja Luka, Republika Srpska and 4 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Thyroid Eye DiseaseLu AG22515
Last reviewed 2026-06-13 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.