CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating expenses:
Research and development	$ 10,007	$ 8,220	$ 21,821	$ 14,823
General and administrative	5,384	4,435	10,409	8,804
Total operating expenses	15,391	12,655	32,230	23,627
Loss from operations	(15,391)	(12,655)	(32,230)	(23,627)
Other income (expense):
Interest income	321	58	381	121
Other (expenses) income	(191)	57	(296)	(84)
Other income, net	130	115	85	37
Net loss	(15,261)	(12,540)	(32,145)	(23,590)
Other comprehensive (loss) income:
Unrealized (losses) gains on available-for-sale securities	(225)	6	(357)	16
Foreign currency translation adjustment	(43)	0	(58)	0
Total other comprehensive (loss) income	(268)	6	(415)	16
Comprehensive loss	(15,529)	(12,534)	(32,560)	(23,574)
Net loss attributable to common stockholders—basic and diluted	$ (15,261)	$ (12,540)	$ (32,145)	$ (23,590)
Net loss per share attributable to common stockholders- basic	$ (0.38)	$ (0.53)	$ (1.01)	$ (1.01)
Net loss per share attributable to common stockholders- diluted	$ (0.38)	$ (0.53)	$ (1.01)	$ (1.01)
Weighted-average common shares and pre-funded warrants outstanding - basic	39,703,550	23,490,591	31,739,197	23,460,218
Weighted-average common shares and pre-funded warrants outstanding - diluted	39,703,550	23,490,591	31,739,197	23,460,218