Clinical trial Recruiting at 31 sites Phase 2 Interventional Ages 18 to 100

DDY391 in Sjögren's disease: see if it works and is safe

Official title: A Randomized, Double-blind, Placebo-controlled, Multicenter Phase 2a/b Study Assessing the Efficacy, Safety and Tolerability of DDY391 in Participants With Sjögren's Disease

Run by Novartis · NCT07737743 · Data updated 2026-11-12

This study tests whether DDY391 is effective and safe for people with Sjögren's disease over up to 52 weeks.

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years to 100 Years
SexAll
Enrollment344 (estimated)
SponsorNovartis
Industry-sponsored
Drugs / interventionsbelimumab, cyclophosphamide
Locations31 sites (Avondale, Arizona and 30 other locations)
StatusRecruiting
StartedAugust 24, 2026
Main results expectedFebruary 19, 2029
Study endsMarch 19, 2029
Registry record updatedNovember 9, 2026
Trial IDNCT07737743 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with Sjögren's disease, meeting ACR/EULAR 2016 criteria, with positive anti-Ro antibodies or biopsy-supported salivary gland inflammation, and stable background medications within specified limits.

Probably not a fit

Individuals with active other autoimmune diseases, or high-dose hydroxychloroquine use beyond 400 mg/day, may not benefit or be excluded from participation.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a phase 2a/b randomized, double-blind, placebo-controlled, multicenter trial in adults with Sjögren's disease. Participants are assigned to DDY391 or placebo across three parts to explore dose response and determine dose selection for future trials. The study includes up to 8 weeks of screening, a 52-week treatment period, and 4 weeks of safety follow-up after the last dose. Key outcomes focus on efficacy, safety, and tolerability over the treatment period.

Why it matters

Potential benefit: Participants may experience improved disease symptoms and better quality of life if DDY391 proves beneficial and safe.

How similar studies have gone: Previous phase 2 studies in similar autoimmune targets have shown signal of efficacy with acceptable safety, but this exact approach is an early phase (2a/2b) in Sjögren's disease.

Who can join: the full rules

Show full inclusion / exclusion criteria
Key Inclusion Criteria:

• Participants must have a diagnosis of SjD according to the ACR/EULAR 2016 classification criteria at screening:

\- Positive anti-Ro (SSA) antibodies at screening. Participants negative for anti-Ro/SSA antibodies are eligible if they have documented previous biopsy showing evidence of salivary gland inflammation consistent with SjD.

Key Exclusion Criteria:

* Presence of another autoimmune rheumatic disease that is active at screening and constitutes the principal illness.
* Exclusion based on medications being used for SjD:

  * Participants taking \> 400 mg/day hydroxychloroquine are excluded. Participants taking ≤400 mg/day hydroxychloroquine should be on a stable dose for at least 4 weeks prior to randomization.
  * Participants taking \> 400 mg/day hydroxychloroquine are excluded. Participants on ≤ 400 mg/day of hydroxychloroquine should be on a stable dose for at least 4 weeks prior to randomization.
* Prior treatment with any of the following within 3 months prior to randomization: belimumab, abatacept, anti-tumor necrosis factor alpha biologic agents, immunoglobulins, plasmapheresis, intravenous (i.v.) or oral cyclophosphamide, mycophenolate mofetil, i.v. or oral cyclosporine A, or any other immunosuppressants (e.g., JAK inhibitors or other kinase inhibitors, IL-2, anti-IL-6, anti-IL-17).
* Previous treatment with any cell-depleting therapies, including but not limited to anti-CD20, unless ≥ 12 months prior to screening.
* Any viral, bacterial or other infections at the time of screening or randomization, or history of recurrent clinically significant infection or of recurrent bacterial infection.
* History of malignancy of any organ system (other than localized non melanoma carcinoma of the skin or in situ cervical cancer) within the last five years of randomization or any malignancy not in remission.

Other protocol-defined inclusion/exclusion criteria may apply.

Where it's running

  • Arizona Arthritis and Rheumatology Associates PLLC
    Avondale, Arizona, United States
    Recruiting
  • Clinical Res Of W Florida
    Clearwater, Florida, United States
    Recruiting
  • Clinical Research of West Florida Inc
    Tampa, Florida, United States
    Recruiting
  • Chicago Clinical Research Inst
    Chicago, Illinois, United States
    Recruiting
  • Willow Rheumatology Wellness
    Willowbrook, Illinois, United States
    Recruiting
  • RAO Research LLC
    Oklahoma City, Oklahoma, United States
    Recruiting
Show 25 more locations
  • Altoona Center for Clin Res
    Duncansville, Pennsylvania, United States
    Recruiting
  • Rheumatology Specialty Center - Willow Grove Office
    Willow Grove, Pennsylvania, United States
    Recruiting
  • Shelby Research LLC
    Memphis, Tennessee, United States
    Recruiting
  • Stryde Research-Allen Arthritis
    Allen, Texas, United States
    Recruiting
  • Novel Research LLC
    Bellaire, Texas, United States
    Recruiting
  • Arthritis Care of Texas
    Corpus Christi, Texas, United States
    Recruiting
  • Novartis Investigative Site
    Southport, Queensland, Australia
    Recruiting
  • Novartis Investigative Site
    Nedlands, Western Australia, Australia
    Recruiting
  • Novartis Investigative Site
    Rimouski, Quebec, Canada
    Recruiting
  • Novartis Investigative Site
    Sherbrooke, Quebec, Canada
    Recruiting
  • Novartis Investigative Site
    Trois-Rivières, Quebec, Canada
    Recruiting
  • Novartis Investigative Site
    Hefei, Anhui, China
    Recruiting
  • Novartis Investigative Site
    Nanjing, Jiangsu, China
    Recruiting
  • Novartis Investigative Site
    Taiyuan, Shanxi, China
    Recruiting
  • Novartis Investigative Site
    Beijing, China
    Recruiting
  • Novartis Investigative Site
    Beijing, China
    Recruiting
  • Novartis Investigative Site
    Bogota, Cundinamarca, Colombia
    Recruiting
  • Novartis Investigative Site
    Paris, France
    Recruiting
  • Novartis Investigative Site
    Kaposvár, Hungary
    Recruiting
  • Novartis Investigative Site
    Kfar Saba, Israel
    Recruiting
  • Novartis Investigative Site
    Petah Tikva, Israel
    Recruiting
  • Novartis Investigative Site
    Ramat Gan, Israel
    Recruiting
  • Novartis Investigative Site
    Tel Aviv, Israel
    Recruiting
  • Novartis Investigative Site
    Tsrifin, Israel
    Recruiting
  • Novartis Investigative Site
    Groningen, Provincie Groningen, Netherlands
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.