Condensed Statements of Operations and Comprehensive Loss - 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	$ 10,112	$ 3,235	$ 22,661	$ 6,167
General and administrative	4,945	2,614	9,417	4,398
Total operating expenses	15,057	5,849	32,078	10,565
Loss from operations	(15,057)	(5,849)	(32,078)	(10,565)
Other income (expense):
Interest income	263	2	289	4
Interest expense	(128)	0	(246)	0
Other income	325	0	640	0
Change in fair value of non-marketable equity securities	(256)	(281)	(543)	(281)
Gain on sale of PNAi technology	0	2,691	0	2,691
Total other income	204	2,412	140	2,414
Net loss	(14,853)	(3,437)	(31,938)	(8,151)
Change in unrealized loss on marketable securities	(140)	0	(152)	0
Total loss and other comprehensive loss	$ (14,993)	$ (3,437)	$ (32,090)	$ (8,151)
Net loss per share attributable to common stockholders, basic	$ (0.55)	$ (0.33)	$ (1.24)	$ (1.49)
Net loss per share attributable to common stockholders, diluted	$ (0.55)	$ (0.33)	$ (1.24)	$ (1.49)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic	27,078,450	10,499,937	25,660,742	5,470,609
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted	27,078,450	10,499,937	25,660,742	5,470,609