Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating expenses
Research and development	$ 15,083	$ 9,210
General and administrative	12,608	11,311
Total operating expenses	27,691	20,521
Operating loss	(27,691)	(20,521)
Interest income	877	6
Other expense, net	(146)	(91)
Loss before income taxes	(26,960)	(20,606)
Income taxes	0	0
Net loss	$ (26,960)	$ (20,606)
Loss per share of common stock - basic and diluted (in dollars per share)	$ (0.21)	$ (0.18)
Weighted average shares outstanding - basic and diluted (in shares)	126,624	116,950