Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity Deficit - USD ($) $ in Thousands	Total	Common Stock	Additional Paid in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2021	$ 384,050	$ 1	$ 525,400	$ (141,351)
Beginning balance, Shares at Dec. 31, 2021		58,010,823
Common stock issued upon exercise of options	20		20
Common stock issued upon exercise of options, Shares		67,196
Common stock issued under ESPP	656		656
Common stock issued under ESPP, Shares		333,155
Stock-based compensation expense	13,534		13,534
Unrealized loss on investments in marketable securities	(1,048)				$ (1,048)
Vesting of early exercised stock options	131		131
Repurchase of unvested early exercised stock options, Shares		(189,414)
Net loss and comprehensive loss	(102,100)
Net Income (Loss)	(101,052)			(101,052)
Ending balance at Dec. 31, 2022	296,291	$ 1	539,741	(242,403)	(1,048)
Ending balance, Shares at Dec. 31, 2022		58,221,760
Common stock issued upon exercise of options	100		100
Common stock issued upon exercise of options, Shares		101,900
Common stock issued under ESPP	157		157
Common stock issued under ESPP, Shares		65,222
Repurchase of common stock in connection with License Agreement with Stanford, Shares		(152,694)
Stock-based compensation expense	10,574		10,574
Unrealized loss on investments in marketable securities	1,048				$ 1,048
Vesting of early exercised stock options	63		63
Repurchase of unvested early exercised stock options, Shares		(227,792)
Net loss and comprehensive loss	(123,603)
Net Income (Loss)	(124,651)			(124,651)
Ending balance at Dec. 31, 2023	$ 183,582	$ 1	$ 550,635	$ (367,054)
Ending balance, Shares at Dec. 31, 2023		58,008,396