American Academy of Dermatology Awards Podium Presentation to Phio Pharmaceutical's Clinical Research at 2025 Annual Meeting

Associated Press

10-03-2025

Interim Results from clinical study for cutaneous carcinomas presented at Late-Breaking Research Session
Marlborough, Massachusetts--(Newsfile Corp. - March 10, 2025) - Phio Pharmaceuticals Corp. (NASDAQ: PHIO) is a clinical-stage biotechnology company developing therapeutics that use its INTASYL ® siRNA gene silencing technology designed to make the body's immune cells more effective in killing cancer cells. Phio today announced that a podium presentation addressing its lead product candidate, PH-762, was given in the Academy's Late-Breaking Research session. The Late-Breaking Research session includes oral presentations of the top-scoring abstracts that address common and complex dermatological conditions.
Mary Spellman, MD, FAAD, presented " PD-1 Directed Intratumoral Immunotherapy for Cutaneous Carcinomas: Interim Results from an Ongoing Study of INTASYL PH-762" which provided details on the design and progress of Phio's ongoing open-label Phase 1b clinical study (NCT 06014086), to evaluate the safety and tolerability of neoadjuvant use of intratumoral PH-762 in cutaneous squamous cell carcinoma (cSCC), melanoma and Merkel cell carcinoma. Stages 1 and 2 cSCC represent 77% of all new cSCC annually.
Recent data showed that, of the four patients who have completed treatment in the second dose cohort, two patients with cutaneous squamous cell carcinoma achieved a complete response (100% pathological cure) while a third patient with squamous cell carcinoma achieved a partial response (90% pathological cure). The fourth patient in this cohort exhibited stable disease, having not progressed.
The study recently fulfilled the required enrollment for safety in its third dose cohort. Initiation of screening of the fourth dose cohort is planned for early April.
'We are excited to share our progress in this trial with the dermatology community,' said Mary Spellman M.D., Phio's acting Chief Medical Officer. 'We believe that this immuno-oncology therapy may offer patients meaningful clinical benefit, while minimizing surgical interventions.'
About Phio Pharmaceuticals Corp.
Phio Pharmaceuticals Corp. (NASDAQ: PHIO) is a clinical-stage biotechnology company advancing its proprietary INTASYL siRNA gene silencing technology to eliminate cancer. INTASYL can target and silence virtually any gene with high degree of specificity across a wide range of cell types and tissues. INTASYL is designed to enhance the ability of immune cells to more effectively kill tumor cells. INTASYL has also demonstrated enhancement to adoptive cell therapy. Notably, INTASYL is a self-delivering RNAi technology focused on immuno-oncology therapeutics without the need for formulation enhancements or manipulations to reach its target.
Phio's lead clinical program, PH-762, is an INTASYL compound that silences PD-1. PH-762 is a potential non-surgical treatment for skin cancers. The on-going Phase 1b trial (NCT# 06014086) received FDA clearance for an Investigational New Drug Application to evaluate PH-762 in the treatment of cutaneous SCC, melanoma and Merkel cell carcinoma in second quarter of 2023.
For additional information, visit the Company's website, www.phiopharma.com.
Forward Looking Statements
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Phio Pharmaceuticals Corp.