Common Stock - Additional Information (Details) - $ / shares					1 Months Ended		3 Months Ended		9 Months Ended	12 Months Ended
	Jul. 02, 2021	Jun. 29, 2021	Jun. 28, 2021	Jun. 18, 2021	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2021	Dec. 31, 2020	May 07, 2021	Apr. 30, 2020
Class Of Stock [Line Items]
Common stock, shares authorized							300,000,000		300,000,000	80,000,000
Common stock, par or stated value per share							$ 0.00001		$ 0.00001	$ 0.00001
Common stock voting rights									one
Common stock, shares, issued							58,079,002		58,079,002	10,279,102
Vesting period description									The shares of the Company’s common stock issued to its founders for their services as an employee, advisor, or consultant vest monthly over four years with one year cliff from the vesting commencement date.
Common stock vesting period									4 years
Common stock vesting cliff period									1 year
Aggregate Common Stock Vested					912,212
Diluted number of shares						7,273,848
Stanford Exclusive License Agreement
Class Of Stock [Line Items]
Common stock, shares, issued										600,000	640,861
Number of shares repurchased by exercising right to repurchase				624,845
Founder
Class Of Stock [Line Items]
Common stock nonvested number of shares							4,092,904		4,092,904	5,169,202
Common stock awards were unvested and expected to vest									2 years 8 months 12 days	3 years 6 months
Founder | Restricted Common Stock
Class Of Stock [Line Items]
Public offering price per share						$ 0.00002
Common stock, shares, issued						6,081,413
Investor | Restricted Common Stock
Class Of Stock [Line Items]
Public offering price per share												$ 0.00002
Common stock, shares, issued												2,467,104
Common Stock
Class Of Stock [Line Items]
Conversion of stock			30,761,676
Common Stock | Initial Public Offering
Class Of Stock [Line Items]
Conversion of stock			30,761,676
Issuance of common stock, Shares	2,100,000	14,000,000					2,100,000	14,000,000
Public offering price per share	$ 17.00	$ 17.00
Common Stock | Underwriters
Class Of Stock [Line Items]
Issuance of common stock, Shares	2,100,000	2,100,000
Redeemable Convertible Preferred Stock | Initial Public Offering
Class Of Stock [Line Items]
Conversion of stock									30,761,676