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Evaluation of Sonelokimab in Patients With Active Psoriatic Arthritis Naive to Biologic Disease-Modifying Antirheumatic Drug

A Phase 3, Parallel-group, Randomized, Double-blind, 3-arm, Placebo-controlled, Multicenter Study to Investigate the Efficacy and Safety of Subcutaneous Sonelokimab in Male and Female Participants Aged 18 Years and Over With Active Psoriatic Arthritis Who Are Naive to Biologic DMARDs

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06641076
Acronym
IZAR-1
Enrollment
960
Registered
2024-10-15
Start date
2024-10-15
Completion date
2027-02-04
Last updated
2026-03-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Arthritis, Psoriatic

Brief summary

This is a study to demonstrate the clinical efficacy and safety of sonelokimab administered subcutaneously compared with placebo in the treatment of adult patients with active psoriatic arthritis who are naive to biologic disease-modifying antirheumatic drug therapy.

Detailed description

M1095-PSA-301 is a Phase 3, multicenter, randomized, parallel-group, double-blind, 3-arm, placebo-controlled study to investigate the efficacy and safety of sonelokimab 60 mg every 4 weeks (with and without an induction regimen) versus placebo in adults with active psoriatic arthritis who are naive to biologic disease-modifying antirheumatic drug therapy.

Interventions

Randomized treatment, parallel-group

DRUGPlacebo

Randomized treatment, parallel-group

Sponsors

MoonLake Immunotherapeutics AG
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Participants must be ≥18 years of age . 2. Participants have a confirmed diagnosis of psoriatic arthritis (PsA) per the 2006 Classification for Psoriatic Arthritis (CASPAR) criteria with symptoms for ≥6 months before the Screening Visit. 3. Participants have active disease (defined by a 68 tender joint count \[TJC68\] of ≥3 and a 66 swollen joint count \[SJC66\] of ≥3). 4. Participants have current active plaque psoriasis (PsO) or a dermatologist-confirmed history of plaque PsO. 5. Participants test negative for both rheumatoid factor and anti-cyclic citrullinated peptide at the Screening Visit.

Exclusion criteria

1. Participants with a known hypersensitivity to sonelokimab or any of its excipients. 2. Participants who have a diagnosis of chronic inflammatory conditions other than PsO or PsA. 3. Participants with a diagnosis of inflammatory bowel disease. 4. Participants who have experienced a period of ≥3 consecutive weeks of unexplained diarrhea in the 24 weeks before the Baseline Visit. 5. Participants who have an established diagnosis of arthritis mutilans. 6. Previous exposure to sonelokimab. 7. Participants who have ever received any biologic immunomodulating agents for PsA or PsO, whether investigational or approved.

Design outcomes

Primary

MeasureTime frameDescription
Response rate of participants achieving at least a 50% improvement in the American College of Rheumatology criteria (ACR50)Week 16Proportion of participants achieving ACR50

Secondary

MeasureTime frameDescription
Response rate of participants achieving at least 20% improvement in the American College of Rheumatology criteria (ACR20)Week 16Proportion of participants achieving ACR20
Response rate of participants achieving Minimal Disease Activity (MDA)Week 16Proportion of participants achieving MDA
Health Assessment Questionnaire- Disability Index (HAQ-DI)Week 16Change in HAQ-DI from baseline
Psoriasis Area and Severity Index (PASI90)Week 16Proportion of participants achieving a decrease of ≥90% in the PASI90 response at Week 16 in the subgroup of participants with psoriasis (PsO) involving ≥3% body surface area at baseline
Short- form-36 (SF-36) Physical Component Summary (PCS)Week 16Change from Baseline in SF-36 PCS at Week 16
van der Heijde modified Total Sharp Score (vdHmTSS)Week 16Change from Baseline to Week 16 in joint/bone structural damage (vdHmTSS)

Countries

Bulgaria, Canada, Croatia, Czechia, Estonia, Finland, France, Georgia, Germany, Greece, Hungary, Latvia, Lithuania, Poland, Portugal, Romania, Serbia, Slovakia, Spain, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 31, 2026