CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS UNAUDITED - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue:
Revenue	$ 0	$ 111	$ 60	$ 363
Expenses:
Research and development	2,204	2,083	6,363	5,862
General and administrative	1,499	1,518	4,867	4,748
Total expenses	3,703	3,601	11,230	10,610
Loss from operations	(3,703)	(3,490)	(11,170)	(10,247)
Other income (expense):
Other income (expense), net	(23)	10	(19)	11
Total other income (expense)	(23)	10	(19)	11
Loss from operations before income taxes	(3,726)	(3,480)	(11,189)	(10,236)
Income tax provision	0	(9)	0	(27)
Net loss	$ (3,726)	$ (3,489)	$ (11,189)	$ (10,263)
Basic net loss per share (in USD per share)	$ (0.41)	$ (0.71)	$ (1.70)	$ (2.09)
Diluted net loss per share (in USD per share)	$ (0.41)	$ (0.71)	$ (1.70)	$ (2.09)
Number of shares used in per share calculations:
Basic (in shares)	8,987,957	4,924,606	6,586,801	4,904,737
Diluted (in shares)	8,987,957	4,924,606	6,586,801	4,904,737