v3.25.2
Cover
Jul. 25, 2025
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 25, 2025
Entity File Number 001-36304
Entity Registrant Name PHIO PHARMACEUTICALS CORP.
Entity Central Index Key 0001533040
Entity Tax Identification Number 45-3215903
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 411 Swedeland Road
Entity Address, Address Line Two Suite 23-1080
Entity Address, City or Town King of Prussia
Entity Address, State or Province PA
Entity Address, Postal Zip Code 19406
City Area Code 508
Local Phone Number 767-3861
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.0001 per share
Trading Symbol PHIO
Security Exchange Name NASDAQ
Entity Emerging Growth Company false