STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue from Contract with Customer, Product and Service [Extensible List]	License [Member]	License [Member]	License [Member]	License [Member]
Collaboration revenue	$ 212	$ 1,900	$ 262	$ (61)
Operating expenses:
Research and development	18,862	15,137	61,012	40,356
General and administrative	6,579	4,343	16,303	14,098
Expense from operations	25,441	19,480	77,315	54,454
Loss from operations	(25,229)	(17,580)	(77,053)	(54,515)
Other income	594	170	519	1,694
Net loss	(24,635)	(17,410)	(76,534)	(52,821)
Unrealized loss on investments	(226)	(207)	(774)	(1,764)
Comprehensive loss	$ (24,861)	$ (17,617)	$ (77,308)	$ (54,585)
Net loss per share – basic (in dollars per share)	$ (0.58)	$ (0.41)	$ (1.81)	$ (1.26)
Net loss per share – diluted (in dollars per share)	$ (0.58)	$ (0.41)	$ (1.81)	$ (1.26)
Weighted-average shares outstanding – basic (in shares)	42,386,470	42,155,981	42,374,955	41,946,852
Weighted-average shares outstanding – diluted (in shares)	42,386,470	42,155,981	42,374,955	41,946,852