Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 248,847	$ 155,385
Prepaid expenses and other current assets	8,760	5,127
Inventory	111
Total current assets	257,718	160,512
Property, plant and equipment, net	1,158	1,207
Operating lease right-of-use assets	1,886	2,287
Restricted cash	528	505
Other long-term assets	3,749	299
Total assets	265,039	164,810
Current liabilities:
Accounts payable (including related party amounts of $27 and $35, respectively)	4,174	9,997
Accrued expenses (including related party amounts of $2,786 and $2,499, respectively)	15,451	14,678
Accrued interest	927	854
Operating lease liabilities, current	717	708
Current portion of revenue interest financing liability	276
Total current liabilities	21,545	26,237
Long-term debt, net of discount	97,806	95,264
Revenue interest financing liability	119,799	109,525
Operating lease liabilities	789	1,098
Other long-term liabilities	7,500	7,500
Total liabilities	247,439	239,624
Commitments and contingencies (Note 4)
Stockholders’ equity:
Preferred stock, $0.0001 par value; authorized shares - 40,000,000 at June 30, 2023 and December 31, 2022; no shares issued and outstanding at June 30, 2023 and December 31, 2022
Common stock, $0.0001 par value; authorized shares - 400,000,000 at June 30, 2023 and December 31, 2022; issued shares -56,639,085 and 41,723,308 at June 30, 2023 and December 31, 2022, respectively; outstanding shares -56,639,085 and 41,468,871 at June 30, 2023 and December 31, 2022, respectively	5	3
Treasury stock -19 shares at June 30, 2023 and December 31, 2022, respectively	0	0
Additional paid-in capital	823,467	652,276
Accumulated deficit	(805,872)	(727,093)
Total stockholders' equity (deficit)	17,600	(74,814)
Total liabilities and stockholders’ equity	$ 265,039	$ 164,810