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Taking peoplePhase 3

Long-term study of dazodalibep in people with Sjögren's syndrome

Checks long-term safety of dazodalibep in adults with Sjögren's syndrome.

Key facts

Who runs it
Amgen
Where
Gent and Leuven, BelgiumSee the 2 sitesAlso in 26 other countries, 185 sites
Registry title
A Long-term Extension Study of Dazodalibep in Participants With Sjögren's Syndrome (SS)
Status
Recruiting
Phase
Phase 3
People taking part
844 people, planned
Started
25 Feb 2025
Expected to end
11 Dec 2029
Type of study
Interventional
Treatments tested
  • Dazodalibep
Record updated
28 April 2026

Who can take part

AI summary

From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.

The trial is looking for adults with Sjögren's syndrome who finished one of the earlier phase 3 dazodalibep studies (HZNP-DAZ-301 or HZNP-DAZ-303). It checks long-term safety of dazodalibep.

Age
18 years or older
Sex
All sexes can join.
Earlier treatment
Must have received dazodalibep or placebo and completed the study through Week 48 in HZNP-DAZ-301 or HZNP-DAZ-303. Must be able to take Dose 1 at the Week 48 Visit (+28 days).

Main reasons for not taking part

  • Clinically significant active infection on Day 1, including infection needing antibiotics or antiviral medicine
  • Planned participation in another clinical study with an investigational product or procedure
  • Planned live (attenuated) vaccine during the study
  • Pregnant, breastfeeding or planning pregnancy during the study
  • Known sensitivity to any product or component given in the study

The registry criteria, word for word

Show all 15 criteriaShow less

Who can take part

  • Participants are eligible to be included in the study only if all the following criteria apply:
  • Participant has provided informed consent before initiation of any study specific activities/procedures
  • Must have been eligible to receive and have received IP (dazodalibep or placebo) and completed the study (through Week 48) in one of the phase 3 SS dazodalibep studies (HZNP-DAZ-301, or HZNP-DAZ-303)
  • Must be able to receive Dose 1 of this LTE study at the Week 48 Visit (+28 days) for the prior pivotal phase 3 SS dazodalibep studies (HZNP DAZ-301, or HZNP DAZ-303)

Who cannot take part

  • Individuals who plan to receive live (attenuated) vaccine during the LTE study
  • Female participants of childbearing potential unwilling to use protocol-specified method of contraception during treatment and for an additional 12 weeks after the last dose of investigational product
  • Clinically significant active infection at Day 1, in the opinion of the Investigator, including ongoing and chronic infection requiring antibiotics or antiviral medication
  • Any condition or change in health status observed or reported during the phase 3 SS studies (HZNP-DAZ-301, or HZNP-DAZ-303) that, in the opinion of the Investigator or the Sponsor, would interfere with evaluation and interpretation of participant safety or alter the risk-benefit associated with IP administration
  • History or evidence of any other clinically significant disorder, condition, or disease that, in the opinion of the investigator or Amgen physician, if consulted, would pose a risk to participant safety or interfere with the study evaluation
  • Participants are excluded from the study if any of the following criteria apply:
  • Planned participation in another clinical study with an IP or procedure during the LTE study. Other investigational procedures and participation in observational research studies while participating in this study are excluded
  • Planned surgeries or hospitalizations that, in the opinion of the Investigator or the Sponsor, would interfere with evaluation and interpretation of participant safety
  • Female participants who are pregnant or lactating or planning to become pregnant during the study
  • Participant has known sensitivity to any of the products or components to be administered during dosing
  • Participant likely to not be available to complete all protocol-required study visits or procedures, and/or to comply with all required study procedures to the best of the participant and investigator's knowledge

Where in Belgium

Also in 26 other countries, 185 sites

  • Universitair Ziekenhuis GentGent, BelgiumNo longer taking part
  • UZ LeuvenLeuven, BelgiumNo longer taking part

About the trial

What the trial wants to find out

The primary objective of this study is to evaluate the long-term safety and tolerability of dazodalibep.

The group in the trial

  • DazodalibepTreatment being tested

    Participants who completed the 48-week dazodalibep or placebo treatment in trials HZNP-DAZ-301 or HZNP-DAZ-303 will receive assigned dose Dose A of dazodalibep for an additional 132 weeks.

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

Print a page for my doctor

Data and sources

Registry record
Listed on ClinicalTrials.gov and on the EU's official list of trials (CTIS).
Official title
A Multicenter, Open-Label, Long-term, Extension Study to Evaluate the Safety and Tolerability of Dazodalibep in Participants With Sjögren's Syndrome (SS)
Plain-language title
Long-term study of dazodalibep in people with Sjögren's syndromeGenerated from the registry record. The registry title is the official one.
AI summary
From the trial's eligibility criteria. Read by machine on 10 November 2026.
Record updated
28 April 2026