Document and Entity Information
Jul. 21, 2020
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001661998
Document Type 8-K
Document Period End Date Jul. 21, 2020
Entity Registrant Name HOMOLOGY MEDICINES, INC.
Entity Incorporation State Country Code DE
Entity File Number 001-38433
Entity Tax Identification Number 47-3468154
Entity Address, Address Line One One Patriots Park
Entity Address, City or Town Bedford
Entity Address, State or Province MA
Entity Address, Postal Zip Code 01730
City Area Code (781)
Local Phone Number 301-7277
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, $0.0001 par value per share
Trading Symbol FIXX
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Entity Ex Transition Period false