CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 233,452	$ 232,968
Inventory	1,395
Prepaid expenses	8,384	2,888
Other current assets	1,693	956
Total current assets	244,924	236,812
Property and equipment, net	1,272	1,294
Operating lease right-of-use assets	1,114	1,247
Other assets	925	86
Total assets	248,235	239,439
Current liabilities
Accounts payable	6,021	4,678
Accrued expenses	13,372	11,492
Due to related party	296	204
Other current liabilities	306	293
Total current liabilities	19,995	16,667
Long-term portion of operating lease liabilities	949	1,105
Long-term portion of operating lease liabilities	949	1,105
Derivative liabilities	1,954
Long-term debt	61,075
Total liabilities	83,973	17,772
Commitments and contingencies (Note 15)
Stockholders' equity
Common stock, $0.001 par value, 100,000 shares authorized as of June 30, 2022 and December 31, 2021; 28,018 and 27,980 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively	28	28
Preferred stock, $0.001 par value, 10,000 shares authorized; no shares issued and outstanding as of June 30, 2022 and December 31, 2021
Additional paid-in-capital	479,164	467,427
Accumulated deficit	(314,930)	(245,788)
Total stockholders' equity	164,262	221,667
Total liabilities and stockholders' equity	$ 248,235	$ 239,439