CONDENSED 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	$ 9,060	$ 9,119	$ 17,568	$ 15,833
General and administrative	2,822	2,595	6,048	5,698
Total operating expenses	11,882	11,714	23,616	21,531
Loss from operations	(11,882)	(11,714)	(23,616)	(21,531)
Interest expense	(94)	(80)	(181)	(169)
Other income, net	104	20	162	39
Net loss	(11,872)	(11,774)	(23,635)	(21,661)
Unrealized loss on available for sale securities	(152)	(29)	(661)	(29)
Comprehensive loss	$ (12,024)	$ (11,803)	$ (24,296)	$ (21,690)
Net loss per share, basic and diluted	$ (0.51)	$ (0.50)	$ (1.01)	$ (0.93)
Weighted-average shares of common stock outstanding, basic and diluted	23,493,613	23,329,756	23,492,960	23,306,708