NCT07284797RecruitingPhase 1
A Phase 1 Open-label Study to Evaluate Safety in Healthy Participants and Participants With Autoimmune Diseases
A Phase 1, First-in-Human, Open-Label, Dose-Escalation Study to Evaluate the Safety and Tolerability, Pharmacokinetics, and Pharmacodynamics of XmAb657 in Healthy Participants and in Participants With Autoimmune Diseases
Source: ClinicalTrials.gov · Last updated 3 Aug 2026
Brief summary (registry, in English)
The purpose of this study is to determine the safety and tolerability of XmAb657 in healthy participants and participants with autoimmune diseases. Participants will be given XmAb657 subcutaneously (SC) by injection under the skin.
- Status (registry)
- Recruiting
- Phase (registry)
- Phase 1
- Study type
- Interventional
- Enrollment
- 60 (estimated)
- First submitted
- 3 Dec 2025
- Start date
- Feb 2026
- Primary completion date
- Oct 2028
- Lead sponsor
- Xencor, Inc.
- NCT number
- NCT07284797
What you commit to
- Study type: Interventional · Phase 1
- Planned participants: 60
- From Feb 2026 to the primary completion date, Oct 2028
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Major surgery within 12 weeks prior to dosing or planned within the study
Other illness
- Recurrent infections or active clinically significant infection
- Active or untreated latent tuberculosis
- Cancer or history of cancer or lymphoproliferative disease within the previous 5 years
- Uncontrolled cardiovascular, pulmonary, renal, hepatic, endocrine, or gastrointestinal disease
- Note: Additional, more specific inclusion/exclusion criteria are defined in the protocol.
Who the study is looking for
- Healthy participants - Adult participants in good health
- Idiopathic inflammatory myopathy (IIM) participants - Adult participants that meet the 2017 European Alliance of Association Rheumatology (EULAR)/American College of Rheumatology (ACR) Classification Criterion for IIM
- Systemic sclerosis (SSc) participants - Adult participants that meet the 2013 ACR/EULAR Classification Criteria for SSc
- Sjogren's Disease participants that meet the 2016 ACR/EULAR Classification Criteria for Primary Sjogren's Syndrome
- All participants - Use of highly effective methods of contraception
Age in the registry: 18 years to 75 years · Sex: All · Accepts healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| - Coordinator of this site? Confirm its status | Melbourne | Australia | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.