Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 25,965	$ 12,589
Marketable securities	62,903	107,921
Prepaid expenses	4,039	795
Other current assets	1,046	1,311
Total current assets	93,953	122,616
Operating lease right-of-use assets	1,190	24
Other non-current assets	297	205
Property, equipment and leasehold improvements, net	238	170
Finance lease right-of-use assets	218
Total assets	95,896	123,015
Current liabilities:
Accounts payable	1,256	2,857
Accrued expenses	3,625	3,518
Operating lease liabilities	171	25
Finance lease liabilities	121
Term loan		7,000
Total current liabilities	5,173	13,400
Operating lease liabilities	1,051	2
Finance lease liabilities	62
Term loan		2,151
Other non-current liabilities		3
Total liabilities	6,286	15,556
Commitments and contingencies (Note 12)
Stockholders’ equity:
Preferred stock: $0.001 par value; 5,000,000 shares authorized at September 30, 2023 and December 31, 2022; no shares issued or outstanding at September 30, 2023 and December 31, 2022.
Common stock: $0.001 par value; 200,000,000 shares authorized at September 30, 2023 and December 31, 2022; and 63,855,330 and 59,943,430 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively.	64	60
Additional paid-in capital	321,076	317,590
Accumulated other comprehensive loss	(217)	(122)
Accumulated deficit	(231,313)	(210,069)
Total stockholders’ equity	89,610	107,459
Total liabilities and stockholders’ equity	$ 95,896	$ 123,015