CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 62,875	$ 63,741
Marketable securities	15,666	81,658
Accounts receivable, net - related party	3,351	3,260
Inventory, net	3,266	2,383
Income tax receivable	697	697
Other receivables	1,682	496
Prepaid expenses	12,658	16,267
Restricted cash	408	408
Total current assets	100,603	168,910
Operating lease right-of-use assets	7,108	1,551
Marketable securities, non-current	4,747	11,350
Property and equipment, net	1,380	426
Restricted cash, non-current	1,500
Total assets	115,338	182,237
Current liabilities:
Accounts payable and accrued expenses	22,384	21,540
Operating lease liabilities, current	497	1,918
Total current liabilities	22,881	23,458
Operating lease liabilities, non-current	6,815
Commitments and contingencies (Note 16)
Stockholders' equity:
Preferred stock; $0.001 par value; 5,000,000 shares authorized at September 30, 2023 and December 31, 2022, zero shares issued and outstanding at September 30, 2023 and December 31, 2022
Common stock; $0.001 par value; 100,000,000 shares authorized at September 30, 2023 and December 31, 2022, 54,471,829 shares and 53,797,341 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively	54	53
Additional paid-in capital	738,435	726,630
Accumulated deficit	(652,408)	(566,232)
Accumulated other comprehensive loss	(439)	(1,672)
Total stockholders' equity	85,642	158,779
Total liabilities and stockholders' equity	$ 115,338	$ 182,237