Phio Pharmaceuticals Announces Pathology Results for Four of Five Patients in Fourth Cohort

  • Complete Pathologic Response in patient with cutaneous squamous cell carcinoma Partial Response in Stage 4 metastatic Merkel cell patient King of Prussia, Pennsylvania--(Newsfile Corp. - July 25, 2025) - Phio Pharmaceuticals Corp. (NASDAQ: PHIO) is a clinical-stage siRNA biopharmaceutical company developing therapeutics using its proprietary INTASYL\u00ae gene silencing technology to eliminate cancer. Phio announced today that pathologic results are available for four of the five patients treated in the fourth cohort.