Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 57,353	$ 43,585
Short-term marketable securities	50,080	79,981
Prepaid expenses and other current assets	5,001	10,827
Total current assets	112,434	134,393
Operating lease right-of-use assets	286	471
Other long-term assets	15	128
Total assets	112,735	134,992
Current liabilities:
Accounts payable	736	750
Accrued expenses	1,764	5,047
Operating lease liabilities	401	300
Total current liabilities	2,901	6,097
Operating lease liabilities, net of current portion	58	180
Other long-term liabilities	34	0
Total liabilities	2,993	6,277
Commitments and contingencies (Note 4)
Stockholders' equity
Common stock, $0.0001 par value per share, 250,000,000 shares authorized; 26,994,988 and 26,567,681 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively	3	3
Additional paid-in capital	262,088	249,930
Accumulated other comprehensive loss	(11)	(358)
Accumulated deficit	(152,338)	(120,860)
Total stockholders' equity	109,742	128,715
Total liabilities and stockholders' equity	$ 112,735	$ 134,992