New drug GB261 tested for rare Hardening-Skin disease
NCT ID NCT07159009
First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time
Summary
This early-phase trial tests a new drug called GB261 in 10 people with systemic sclerosis, a rare autoimmune disease that causes skin and organ hardening. The main goal is to check safety and how the body handles the drug. Researchers will also look for early signs that it might help control the disease.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- GB261
- What this could lead to
- If it works, this could point toward a new treatment option for systemic sclerosis, a rare autoimmune disease that causes skin and organ hardening.
- What could go wrong
- This is a very early, small trial with only 10 participants. It primarily checks safety, not effectiveness, so the drug may not work or could have side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Early phase 1
The earliest testing in people: a first look at safety, in a very small group.
- Participants
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About 10 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2025
An estimate. Start dates often move.
- Expected to finish
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Jul 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 75 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. 18 to 75 years old at the time of signing the informed consent form (ICF) 2. Diagnosis of SSc according to the 2013 American College of Rheumatology (ACR)/ European Alliance of Associations for Rheumatology (EULAR) classification criteria 3. Diffuse cutaneous SSc according to the LeRoy criteria 4. Positive for at least 1 SSc-specific parameter as specified in the protocol; 5. Disease duration of ≤ 7 years 6. mRSS ≥ 15 7. Inadequate response to therapies defined in the protocol Exclusion Criteria: 1. Inadequate clinical laboratory parameters at Screening: 2. Receipt of or inability to discontinue any excluded as specified in the protocol: 3. Receipt of live vaccine within 4 weeks prior to Screening 4. Presence of any concomitant autoimmune disease other than the disease being studied 5. Receiving or anticipated to require total parenteral nutrition during the study 6. Active or history of intestinal pseudo-obstruction OR small intestinal bacteria overgrowth 7. Active or history of gastric antral vascular ectasia 8. Active digital ischemia with gangrene OR requiring antibiotics or amputation at Screening or during the study 9. Active or history of scleroderma renal crisis 10. History of progressive multifocal leukoencephalopathy 11. History of primary immunodeficiency or a hereditary deficiency of the complement system 12. Central nervous system (CNS) disease 13. Have presence of 1 or more significant concurrent medical conditions per investigator judgment 14. Have a diagnosis or history of malignant disease within 5 years prior to Screening 15. Inability to comply with contraception requirements as specified in the protocol
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can inhaled cell vesicles soothe damaged lungs in autoimmune disease?
- Can a single cell therapy calm multiple autoimmune diseases?
- Can skin biopsies unlock new treatments for scleroderma?
- Could a skin patch ease stomach pain in scleroderma?
- Could a painless microneedle pad ease Raynaud's in scleroderma?
- Can a new pill ease the hardening skin of systemic sclerosis?