Small study to uncover how psoriasis drug tames the immune system
NCT ID NCT05390515
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at how the drug tildrakizumab changes immune cells in the skin and blood of people with moderate-to-severe psoriasis. Ten adults will be treated and monitored for three months. The goal is to see how the drug reduces psoriasis severity and what happens to immune function during treatment.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- tildrakizumab (an IL-23 blocker given by injection)
- What this could lead to
- If successful, this could help doctors understand how tildrakizumab works in the body to control psoriasis, potentially improving treatment strategies.
- What could go wrong
- This is a very small early-phase study with only 10 participants, so results may not apply to everyone. It focuses on immune changes, not long-term outcomes.
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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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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About 10 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Sep 2022
- Expected to finish
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Sep 2028
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: * 18 years of age or older * Patients with moderate-severe psoriasis or \> 5% body surface area affected. Exclusion Criteria: * taking systemic immunosuppressives in the last 4 weeks * pregnancy * severe immunodeficiency (either from genetic or infectious causes). * tuberculosis or other active serious infection * active systemic malignancy. * breast-feeding * Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the patient or the quality of the data.
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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 places running it
1 site. The list below names each one and where it is.
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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.
Contacts and locations
Locations
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University of California, San Francisco
RECRUITINGSan Francisco, California, 94115, United States
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Other studies related to the condition(s) this trial covers.
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- New study to measure psoriasis treatment success beyond the skin