Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 44,365	$ 61,139
Prepaid expenses and other current assets	963	1,008
Total current assets	45,328	62,147
Property and equipment, net	1,528	1,961
Intangible assets, net	1,886	2,551
Goodwill	2,791	2,791
Right-of-use assets	7,256	8,062
Other assets	365	365
Total assets	59,154	77,877
Current liabilities:
Accounts payable	1,836	1,573
Accrued expenses	3,814	2,595
Lease liability, current	1,058	896
Related party note payable, current	0	917
Total current liabilities	6,708	5,981
Lease liability, less current portion	8,086	9,144
Related party note payable, less current	0	65,000
Total liabilities	14,794	80,125
Commitments and contingencies (Note 13)
Stockholders’ equity:
Preferred stock, $0.001 par value; authorized – 50,000 shares; no shares issued and outstanding	0	0
Common stock, $0.001 par value; authorized – 500,000 shares; issued and outstanding – 55,144 shares and 37,235 shares at December 31, 2023 and 2022, respectively	55	37
Additional paid-in capital	381,220	292,420
Accumulated other comprehensive income (loss)	0	0
Accumulated deficit	(336,915)	(294,705)
Total stockholders’ equity (deficit)	44,360	(2,248)
Total liabilities and stockholders’ equity	$ 59,154	$ 77,877