v3.25.2
Cover
Jul. 29, 2025
Cover [Abstract]  
Document Type 8-K
Document Period End Date Jul. 29, 2025
Entity Registrant Name Crescent Biopharma, Inc.
Entity Incorporation, State or Country Code E9
Entity File Number 001-36177
Entity Tax Identification Number 06-1686563
Entity Address, Address Line One 300 Fifth Avenue
Entity Address, City or Town Waltham
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02451
City Area Code 617
Local Phone Number 430-5595
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Ordinary Shares, $0.001 par value per share
Trading Symbol CBIO
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0001253689
Amendment Flag false