v3.22.2.2
Document and Entity Information
Dec. 09, 2022
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001761918
Document Type 8-K
Document Period End Date Dec. 09, 2022
Entity Registrant Name Erasca, Inc.
Entity Incorporation State Country Code DE
Entity File Number 001-40602
Entity Tax Identification Number 83-1217027
Entity Address, Address Line One 3115 Merryfield Row
Entity Address, Address Line Two Suite 300
Entity Address, City or Town San Diego
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92121
City Area Code (858)
Local Phone Number 465-6511
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 ERAS
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Entity Ex Transition Period false