Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 31,230	$ 51,829
Insurance recovery of legal settlement	450	15,000
Prepaid expenses and other current assets	1,270	2,134
Total current assets	32,950	68,963
Property and equipment—net	1,060	1,113
Operating lease right-of-use assets	11,650	3,051
Other noncurrent assets	429	111
Total assets	46,089	73,238
Current liabilities:
Accounts payable	1,108	991
Accrued legal settlement	450	15,000
Accrued expenses	2,961	1,589
Current operating lease liabilities	1,413	1,442
Accrued compensation	1,248	912
Interest payable	97	92
Total current liabilities	7,277	20,026
Loan payable (net of discount and issuance costs of $454 and $756, respectively)	10,371	15,069
Operating lease liabilities, less current portion	10,330	2,026
Total liabilities	27,978	37,121
Commitments and contingencies (Note 6)
Stockholders' equity:
Common stock, $0.001 par value; 100,000,000 shares authorized; 10,518,539 and 6,910,324 shares issued and outstanding at December 31, 2022 and 2021, respectively	11	7
Additional paid-in capital	153,872	136,173
Accumulated deficit	(135,772)	(100,063)
Total stockholders' equity	18,111	36,117
Total liabilities and stockholders' equity	$ 46,089	$ 73,238