Soligenix Hits Key Enrollment Milestone in Phase 3 Trial for HyBryte™ in Cutaneous T-Cell Lymphoma

1 December 2025

Soligenix, Inc. (Nasdaq: SNGX), a late-stage biopharmaceutical company dedicated to developing and commercializing therapies for rare diseases with high unmet needs, announced the completion of the targeted enrollment of 50 patients required for the planned interim analysis in its 80-patient confirmatory Phase 3, double-blind, placebo-controlled clinical trial of HyBryte™ (synthetic hypericin) for the treatment of cutaneous T-cell lymphoma (CTCL). This confirmatory Phase 3 study, known as FLASH2 (Fluorescent Light Activated Synthetic Hypericin 2), builds upon the positive and statistically significant results of the earlier Phase 3 FLASH trial, along with data from a recent successful comparative study (HPN-CTCL-04) and an ongoing investigator-initiated study.

This development marks an important step forward for HyBryte™, which had previously shown promising results in an earlier Phase 3 (FLASH) study, as well as in comparative and investigator-initiated trials. The current trial is being closely watched because a second successful Phase 3 would be critical for regulatory approval and broader commercialization. 

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How DelveInsight Report Adds Strategic Value

DelveInsight is a leading market-research and consulting firm offering in-depth reports on rare diseases, oncology, and other therapeutic areas. For CTCL a relatively rare lymphoma subgroup, DelveInsight market report would bring several key benefits:

  • Epidemiology & Patient Population Estimate: The report would provide data on CTCL prevalence and incidence globally and across major geographies, helping estimate the addressable patient pool for HyBryte™. 
  • Market Forecast & Treatment Trends: It would forecast market size over the next 5–10 years, considering adoption rates, competing therapies, and standard-of-care evolution. 
  • Competitive Landscape & Unmet Needs: The report would map other therapies in development or approved for CTCL, highlighting unmet needs and how HyBryte™ could differentiate itself. 
  • Pricing, Reimbursement & Access Insights: For rare diseases like CTCL, DelveInsight analyzes reimbursement frameworks, access challenges, and payer dynamics critical for commercial planning.
  • Strategic Decision Support: For pharma companies, investors, and healthcare stakeholders, the report guides go-to-market strategy, positioning, and resource allocation based on robust data rather than assumptions. 

In short, such a report turns clinical data like the enrollment milestone for HyBryte™ into actionable business and market insight.

Conclusion:

Soligenix’s achievement of the enrollment milestone in the FLASH 2 trial for HyBryte™ in CTCL underscores progress toward potential regulatory approval and fills hope for a new therapy in a rare cancer indication. Meanwhile, integrating this clinical progress with a comprehensive market analysis from DelveInsight can provide stakeholders from biotech firms and investors to payers and providers a clear, data-driven picture of market potential, patient demand, competitive landscape, and strategic pathways forward. Together, clinical momentum and market intelligence strengthen the case for HyBryte™’s role in the future CTCL treatment landscape.

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