BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 104,208	$ 78,446
Short-term investments	173,933	215,154
Prepaid expenses and other current assets	1,960	3,097
Total current assets	280,101	296,697
Property and equipment, net	1,969	1,981
Other assets	1,890	319
Total assets	283,960	298,997
Current liabilities:
Accounts payable	606	757
Accrued liabilities	7,070	8,245
Total current liabilities	7,676	9,002
Other long-term liabilities	209	219
Total liabilities	7,885	9,221
Commitments and contingencies (Note 9)
Stockholders' equity:
Preferred stock, $0.0001 par value; 200,000,000 shares authorized at March 31, 2021 and December 31, 2020; no shares issued and outstanding at March 31, 2021 and December 31, 2020
Common stock, $0.0001 par value; 1,000,000,000 shares authorized at March 31, 2021 and December 31, 2020; 36,690,826 shares and 36,672,415 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively	4	4
Additional paid-in capital	458,956	456,196
Accumulated deficit	(182,902)	(166,393)
Accumulated other comprehensive gain (loss)	17	(31)
Total stockholders' equity	276,075	289,776
Total liabilities and stockholders' equity	$ 283,960	$ 298,997