v3.25.2
Cover
Jun. 23, 2025
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 23, 2025
Entity File Number 001-39231
Entity Registrant Name PASSAGE BIO, INC.
Entity Central Index Key 0001787297
Entity Tax Identification Number 82-2729751
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One One Commerce Square
Entity Address, Address Line Two 2005 Market Street, 39th Floor
Entity Address, City or Town Philadelphia
Entity Address, State or Province PA
Entity Address, Postal Zip Code 19103
City Area Code 267
Local Phone Number 866-0311
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.0001 Par Value Per Share
Trading Symbol PASG
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false