Erasca (ERAS) 8-K 27 Apr 22 Departure of Directors or Certain Officers Financial data

Document And Entity Information

Document And Entity Information	Apr. 25, 2022
Document Information [Line Items]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Apr. 25, 2022
Entity Registrant Name	Erasca, Inc.
Entity Central Index Key	0001761918
Entity Emerging Growth Company	true
Entity File Number	001-40602
Entity Incorporation, State or Country Code	DE
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
Entity Ex Transition Period	false
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Trading Symbol	ERAS
Security Exchange Name	NASDAQ
Former Address [Member]
Document Information [Line Items]
Entity Address, Address Line One	10835 Road to the Cure, Suite 140
Entity Address, City or Town	San Diego
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92121