CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 4,145	$ 6,062
Receivables	1	1
Prepaid expenses and other current assets	1,891	2,198
Total current assets	6,037	8,261
Property and equipment, net	0	2
Total assets	6,037	8,263
Current liabilities:
Accounts payable	597	616
Accrued expenses	643	1,340
Total current liabilities	1,240	1,956
Total liabilities	1,240	1,956
Commitments and contingencies (Note 8)
Stockholders' equity
Common stock $0.001 par value; 34,666,667 shares authorized, 16,012,522 shares issued and outstanding at March 31, 2024 and at December 31, 2023	16	16
Additional paid-in capital	922,230	922,058
Accumulated deficit	(917,449)	(915,767)
Total stockholders' equity	4,797	6,307
Total liabilities and stockholders' equity	$ 6,037	$ 8,263