Treatment for patients with steroid-resistant pemphigus

ONO-4059-10:Multicenter, Placebo-controlled, Randomized, Double-blind, Phase 3 Study in Patients With Steroid-resistant Pemphigus (BRILLIANT Study)

PHASE3 · Ono Pharmaceutical Co., Ltd. · NCT06696716

This study is testing a new treatment for people with pemphigus who don't respond to steroids to see if it can help improve their condition.

Quick facts

PhasePHASE3
Study typeInterventional
Enrollment34 (estimated)
Ages20 Years and up
SexAll
SponsorOno Pharmaceutical Co., Ltd. (industry)
Locations25 sites (Aichi and 24 other locations)
Trial IDNCT06696716 on ClinicalTrials.gov

What this trial studies

This Phase 3 clinical trial evaluates the efficacy of ONO-4059, a novel treatment, in patients suffering from steroid-resistant pemphigus. The study is designed as a multicenter, placebo-controlled, randomized, and double-blind trial, ensuring rigorous testing of the treatment's effectiveness compared to a placebo. Patients will be monitored for changes in their pemphigus disease area index (PDAI) score as a primary outcome measure. The trial aims to provide a new therapeutic option for those who do not respond adequately to standard corticosteroid treatments.

Who should consider this trial

Good fit: Ideal candidates for this study are patients diagnosed with pemphigus who have experienced a re-increase in their PDAI score while on a low dose of corticosteroids.

Not a fit: Patients with active infections, malignancies, or a history of serious allergies or anaphylaxis may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could offer a new hope for patients with steroid-resistant pemphigus, potentially improving their quality of life and disease management.

How similar studies have performed: While this approach is novel in the context of steroid-resistant pemphigus, similar studies targeting autoimmune conditions have shown promising results.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with a diagnosis of pemphigus
* Patients with a re-increase in the pemphigus disease area index (PDAI) score before oral corticosteroid tapering to 10mg/day of prednisolone (PSL) equivalent

Exclusion Criteria:

* Patients with an active infection
* Patients with malignancy
* Patients with past history of serious allergy or anaphylaxis

Where this trial is running

Aichi and 24 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.

View on ClinicalTrials.gov →

Conditions: Pemphigus, Steroid-resistant Pemphigus

Last reviewed 2026-05-15 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.