Document and Entity Information
Mar. 10, 2022
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Mar. 10, 2022
Entity Registrant Name Dyne Therapeutics, Inc.
Entity Central Index Key 0001818794
Entity Incorporation, State or Country Code DE
Entity File Number 001-39509
Entity Tax Identification Number 36-4883909
Entity Address, Address Line One 1560 Trapelo Road
Entity Address, City or Town Waltham
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02451
City Area Code 781
Local Phone Number 786-8230
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 DYN
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Entity Ex Transition Period false