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Study identifier: NCT05895786 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

A Study to Understand How the Study Medicine (PF-06823859) Works in People With Active Idiopathic Inflammatory Myopathies [Dermatomyositis (DM) and Polymyositis (PM)]

Condition: Myositis  ·  Sponsor: Pfizer

PhasePhase 3
Planned participants318
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The purpose of the study is to understand how the study medicine PF-06823859 (dazukibart) works in people with idiopathic inflammatory myopathies (DM and PM). These disorders cause inflammation that weakens the muscles that are important for movement and may also cause skin rash in people with DM. This study is seeking participants who: * Are 18 years of age or older or minimum legal adult age as defined per local regulation, whichever is greater * Have active DM or active PM. * Are receiving a stable dose of 1 corticosteroid taken by mouth and/or 1 traditional immunosuppressant. * Note: Corticosteroids and immunosuppressants are medicines that help reduce inflammation and may signal to the immune system not to attack the body. Dermatomyositis (DM) is a rare disease that causes muscle inflammation that results in muscle weakness and low muscle stamina. Patients with DM have a characteristic skin rash. Polymyositis (PM) is a rare disease that involves mainly muscle inflammation resulting in muscle weakness, that can sometimes be painful. Patients with DM and PM may have trouble going up the steps, walking or getting to a standing position. Some of the participants will receive the study medicine (dazukibart) and some will receive placebo (which is similar to study medicine but contains no medicine in it). The study medicine or placebo will be given as an intravenous (IV) infusion (directly into the veins), which takes about 1 hour; every 4 weeks from Day 1 to Week 48 o…

This description comes directly from the study's public registry record.

Talk to the study team

Pfizer CT.gov Call Center  ·  1-800-718-1021  ·  ClinicalTrials.gov_Inquiries@pfizer.com

Always discuss trial participation with your own doctor first.

Locations (146)

Arizona Arthritis & Rheumatology Research, PLLCGlendale, Arizona, United StatesRecruiting
Neuromuscular Research CenterPhoenix, Arizona, United StatesRecruiting
Mayo Clinic HospitalPhoenix, Arizona, United StatesRecruiting
Mayo Clinic in Arizona - ScottsdaleScottsdale, Arizona, United StatesRecruiting
200 UCLA Medical PlazaLos Angeles, California, United StatesRecruiting
UCLA Clinical & Translational Research Center (CTRC)Los Angeles, California, United StatesRecruiting
UCLALos Angeles, California, United StatesRecruiting
Center for Clinical Research - Chapman PavilionOrange, California, United StatesActive Not Recruiting
UCI Douglas HospitalOrange, California, United StatesActive Not Recruiting
UCI Health Center for Innovative Health TherapiesOrange, California, United StatesActive Not Recruiting
University of California - IrvineOrange, California, United StatesActive Not Recruiting
Mayo Clinic in FloridaJacksonville, Florida, United StatesRecruiting

+ 134 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT05895786