CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 27,489	$ 29,519
Short-term investments	92,723	98,232
Prepaid expenses and other current assets	3,751	4,344
Total current assets	123,963	132,095
Property and equipment, net	1,992	2,092
Operating lease right-of-use assets	4,579	4,770
Long-term investments	39,275	41,881
Restricted cash	388	388
Total assets	170,197	181,226
Current liabilities:
Accounts payable	1,374	904
Accrued expenses and other current liabilities	3,568	4,886
Operating lease liabilities, current	740	726
Total current liabilities	5,682	6,516
Operating lease liabilities, long-term	4,046	4,235
Total liabilities	9,728	10,751
Commitments and contingencies (Note 12)
Stockholders’ deficit:
Common stock, par value $0.001; 500,000,000 shares authorized as of March 31, 2023 and December 31, 2022; 21,920,634 and 21,920,402 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively.	22	22
Additional paid-in capital	229,226	226,580
Accumulated other comprehensive gain (loss)	9	(95)
Accumulated deficit	(68,788)	(56,032)
Total stockholders' equity	160,469	170,475
Total liabilities and stockholders' equity	$ 170,197	$ 181,226