Can a Once-Weekly pill clear stubborn psoriasis?
NCT ID NCT07765628
First seen Aug 14, 2026 · Last updated Aug 14, 2026
Summary
This phase 2 trial is testing whether an experimental oral drug called HS-20118 can improve moderate to severe plaque psoriasis, a condition that causes thick, scaly patches on the skin. About 120 adults with the condition will receive either HS-20118 or a placebo once a week for 16 weeks. The main goal is to see if the drug leads to at least a 75% improvement in psoriasis severity, as measured by a standard scoring system.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- HS-20118, an oral drug taken once weekly
- What this could lead to
- If successful, this could lead to a new once-weekly pill to help clear skin in people with moderate to severe plaque psoriasis.
- What could go wrong
- This is an early-phase trial with a modest number of participants, so results may not hold up in larger studies. As with any new drug, there may be side effects not yet known.
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 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 120 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Aug 2026
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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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
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 years and older
- 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. Participants voluntarily agree to comply with all study procedures and scheduled follow-up assessments, and to cooperate with the collection of lesion photographs and other protocol-specified requirements; 2. Diagnosis of plaque psoriasis, with or without PsA, established for at least 26 weeks prior to the first administration of study intervention. If previously diagnosed with psoriasis, participants must have a documented history of psoriasis for at least 26 weeks and must be confirmed by the investigator during screening to have plaque psoriasis; 3. At screening and baseline, participants must be confirmed by the investigator to have stable moderate-to-severe plaque psoriasis, as defined by meeting all of the following four criteria: 1\) No morphological changes or significant disease flares during the 4 weeks preceding screening, as assessed by the investigator; 2) BSA≥10%; 3) PASI≥12; 4) IGA≥3; 4. Be a candidate for phototherapy or systemic treatment for plaque psoriasis; 5. Participants must have no plans for pregnancy or sperm/egg donation during the study period. If of childbearing age, women must not be pregnant or breastfeeding, and must have a negative blood pregnancy test within 7 days before randomization. Participants and their partners must voluntarily use highly effective contraception during the study period and for at least 3 months after the last dose. Exclusion Criteria: 1. Known allergy, hypersensitivity, or intolerance to biologics, study drugs, or their excipients. 2. Non-plaque psoriasis (e.g., guttate, erythrodermic, pustular, or drug-induced psoriasis) at screening or randomization. 3. Other skin lesions or systemic autoimmune diseases (e.g., systemic lupus erythematosus, Sjögren's syndrome, scleroderma) that may affect the safety and efficacy assessment of the study drug. 4. Other skin lesions or systemic autoimmune diseases (e.g., systemic lupus erythematosus, Sjögren's syndrome, scleroderma) that may affect the safety and efficacy assessment of the study drug. 5. Severe, progressive, or poorly controlled renal, hepatic, cardiac, vascular, pulmonary, gastrointestinal, endocrine, neurological, hematologic, rheumatologic, psychiatric, or metabolic disorders; or current signs or symptoms related to these conditions. 6. History of malignancy within 5 years before screening (except for adequately treated skin basal cell carcinoma, in situ skin cancer, or in situ cervical cancer with no recurrence for at least 12 weeks before the first dose). 7. History of lymphoproliferative disorders (e.g., lymphoma), unexplained monoclonal gammopathy, or signs and symptoms suggestive of lymphoproliferative disorders (e.g., splenomegaly or severe lymphadenopathy). 8. Any other condition deemed by the investigator as unsuitable for participation in the clinical study.
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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.
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Other studies related to the condition(s) this trial covers.
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