Positive Outcome in 75% of CTCL Patients Treated with HyBryte™ for 18 Weeks

Core Insights - The interim results from an FDA-funded study indicate that HyBryte™ shows a rapid response and strong safety profile in treating early-stage cutaneous T-cell lymphoma (CTCL), with 75% of patients achieving "Treatment Success" after 18 weeks of treatment [1][2][3] Company Overview - Soligenix, Inc. is a late-stage biopharmaceutical company focused on developing products for rare diseases with unmet medical needs, particularly in the area of CTCL [16][17] - The company is advancing HyBryte™ (SGX301), a novel photodynamic therapy utilizing synthetic hypericin, which has received orphan drug and fast track designations from the FDA [5][11] Study Details - The ongoing open-label, investigator-initiated study (IIS) has enrolled nine patients, with six out of eight evaluable patients achieving a predefined "Treatment Success" [2][3] - The study is designed to evaluate the efficacy of HyBryte™ over a treatment period of up to 54 weeks, with a focus on the cumulative mCAILS score [4][12] Treatment Efficacy - In the first Phase 3 FLASH study, HyBryte™ demonstrated a 16% response rate for at least a 50% reduction in lesions compared to 4% in the placebo group, indicating significant efficacy [6][7] - The second open-label treatment cycle showed a 40% response rate among patients treated for 12 weeks, further supporting the efficacy of extended treatment [7][8] Safety Profile - HyBryte™ has been reported to have a benign safety profile, with no significant systemic absorption and a mechanism of action that avoids DNA damage, making it a safer alternative to current therapies [9][10] - The treatment has been well tolerated across multiple cycles, with 66% of patients opting to continue treatment in the optional safety cycle [8][9] Future Developments - A confirmatory Phase 3 study, FLASH2, is expected to begin before the end of 2024, aiming to replicate the successful design of the first FLASH study and enroll approximately 80 subjects [11][12] - The study will assess the efficacy of HyBryte™ over an extended 18-week treatment period, with ongoing discussions with the FDA regarding study design [11][12] Financial Support - The FDA has awarded a grant of up to $2.6 million to support the investigator-initiated study evaluating HyBryte™ for expanded treatment options, including home use [13]