Topical treatment for mild-to-moderate psoriasis using SGX302

Phase 2 Study Evaluating SGX302 (Synthetic Hypericin) in the Treatment of Mild-to-Moderate Psoriasis

Phase 2 Interventional Soligenix · NCT05442190

This study is testing a new ointment and light therapy to see if it helps people with mild-to-moderate psoriasis feel better and improve their skin.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment47 (estimated)
Ages18 Years to 75 Years
SexAll
SponsorSoligenix Industry-sponsored
Locations1 site (San Diego, California)
Trial IDNCT05442190 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the effectiveness of SGX302, a topical ointment and gel containing hypericin, combined with visible light therapy, over an 18-week period for patients with mild-to-moderate psoriasis. Participants will apply the treatment to affected areas on their body, specifically targeting lesions that cover 2-30% of their trunk and/or limbs. The study aims to assess improvements in psoriasis severity as measured by established clinical scales. A placebo group will also be included to compare the treatment's efficacy.

Who should consider this trial

Good fit: Ideal candidates are individuals with a clinical diagnosis of plaque psoriasis lasting at least six months, with mild to moderate severity affecting 2-30% of their body.

Not a fit: Patients who have recently used other topical or systemic psoriasis treatments may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new, effective option for patients suffering from mild-to-moderate psoriasis.

How similar studies have performed: While this approach is novel, similar studies using topical treatments for psoriasis have shown varying degrees of success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Have a clinical diagnosis of plaque psoriasis (psoriasis vulgaris) of at least 6-months duration that involves the body (trunk and/or limbs) that is amenable to topical treatment and opaque coverage after application.
* Have a static Investigator Global Assessment (IGA)/Psoriasis Area and Severity Index (PASI) of disease severity of mild or moderate on the body (trunk and/or limbs).
* Have lesions involving 2-30% of the body (trunk and/or limbs). For subjects with scalp psoriasis included in the treatment area, the total treatment area on body and scalp must not exceed 30%.

Exclusion Criteria:

* Use of topical anti psoriatic therapy within one week prior to the beginning of the study and willing to not use other psoriasis treatments for 4 weeks following completion of the treatment portion of the study.
* Received systemic biologic therapy to treat psoriasis within 12 weeks prior to the beginning of the study.
* Received systemic psoriasis therapy within 4 weeks prior to the beginning of the study.
* Received phototherapy (including laser) or photodynamic (light activated drug) therapy within 4 weeks prior to the beginning of the study.

Where this trial is running

San Diego, California

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions PsoriasisPlaque PsoriasisPsoriasis VulgarisHypericin
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.