Condensed Consolidated Statements of Operations and Comprehensive Loss Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating expenses:
Research and development	$ 2,463	$ 6,604	$ 5,789	$ 17,404
General and administrative	1,976	4,662	5,129	8,815
Total operating expenses	4,439	11,266	10,918	26,219
Loss from operations	(4,439)	(11,266)	(10,918)	(26,219)
Other income:
(Loss) gain from foreign exchange	(40)	25	(44)	26
Interest and other income (expense), net	557	(43)	1,006	45
Other income (expense), net	517	(18)	962	71
Net (loss) income	$ (3,922)	$ (11,284)	$ (9,956)	$ (26,148)
Net (loss) income per share, basic	$ (0.63)	$ (2.8)	$ (1.57)	$ (6.5)
Net (loss) income per share, diluted	$ (0.63)	$ (2.8)	$ (1.57)	$ (6.5)
Weighted-average shares used to compute net (loss) income per share, basic	6,207,707	4,025,489	6,345,206	4,025,489
Weighted-average shares used to compute net (loss) income per share, diluted	6,207,707	4,025,489	6,345,206	4,025,489
Net (loss) income	$ (3,922)	$ (11,284)	$ (9,956)	$ (26,148)
Unrealized (loss) gain on available-for-sale securities	(86)	75	50	(167)
Comprehensive (loss) income	$ (4,008)	$ (11,209)	$ (9,906)	$ (26,315)