Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating expenses:
Research and development	$ 68,993	$ 22,484
General and administrative	21,910	11,918
Total operating expenses	90,903	34,402
Loss from operations	(90,903)	(34,402)
Other income (expense):
Interest income	1,750	15
Interest expense	(992)	(20)
Other income	1,899	0
Change in fair value of non-marketable equity securities	(809)	(892)
Gain on sale of PNAi technology	0	2,691
Total other income, net	1,848	1,794
Loss before provision for income taxes	(89,055)	(32,608)
Provision for income taxes	(1)	(1)
Net loss	(89,056)	(32,609)
Other comprehensive loss:
Change in unrealized loss on marketable securities	(224)	0
Comprehensive loss	$ (89,280)	$ (32,609)
Net loss per share attributable to common stockholders, basic	$ (3.35)	$ (2.43)
Net loss per share attributable to common stockholders, diluted	$ (3.35)	$ (2.43)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic	26,570,676	13,435,706
Weighted-average shares used in computing net loss per shareattributable to common stockholders, diluted	26,570,676	13,435,706