Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 8,898	$ 19,803	[1]
Short-term marketable securities	20,139	23,398	[1]
Prepaid expenses and other current assets	1,226	3,404	[1]
Total current assets	30,263	46,605	[1]
Property and equipment, net	4,414	5,082	[1]
Operating lease right-of-use assets	11,359	12,981	[1]
Long-term restricted cash	896	896	[1]
Other long-term assets	200	126	[1]
Total assets	47,132	65,690	[1]
Current liabilities:
Accounts payable	1,804	1,380	[1]
Accrued compensation	1,704	1,841	[1]
Accrued and other current liabilities	5,276	4,619	[1]
Total current liabilities	8,784	7,840	[1]
Operating lease liability, net of current portion	20,698	23,539	[1]
Warrant liability	3,506	5,913	[1]
Total liabilities	32,988	37,292	[1]
Commitments and contingencies (Note 6)
Stockholders’ equity:
Convertible preferred stock, $0.0001 par value; 10,000,000 shares authorized; no shares issued and outstanding	0	0	[1]
Common stock, $0.0001 par value; 300,000,000 shares authorized as of September 30, 2024 and December 31, 2023; 16,850,350 and 16,784,969 shares issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	2	2	[1]
Additional paid-in capital	516,006	512,773	[1]
Accumulated other comprehensive income (loss)	39	(24)	[1]
Accumulated deficit	(501,903)	(484,353)	[1]
Total stockholders’ equity	14,144	28,398	[1]
Total liabilities and stockholders’ equity	$ 47,132	$ 65,690	[1]

[1] The balance sheet as of December 31, 2023 is derived from the audited financial statements as of that date.