BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 112,644	$ 226,006
Short-term investments	121,978	10,973
Prepaid expenses and other current assets	4,463	3,543
Total current assets	239,085	240,522
Long-term investments	21,577	43,386
Property and equipment, net	2,463	2,413
Other assets	11,937	12,321
Total assets	275,062	298,642
Current liabilities:
Accounts payable	888	1,886
Accrued liabilities	10,929	13,265
Total current liabilities	11,817	15,151
Other long-term liabilities	10,166	10,515
Total liabilities	21,983	25,666
Commitments and contingencies (Note 9)
Stockholders' equity:
Preferred stock, $0.0001 par value; 200,000,000 shares authorized; no shares issued and outstanding at March 31, 2022 and December 31, 2021
Common stock, $0.0001 par value; 1,000,000,000 shares authorized; 39,438,602 and 39,430,120 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	4	4
Additional paid-in capital	522,144	518,183
Accumulated deficit	(268,267)	(245,108)
Accumulated other comprehensive loss	(802)	(103)
Total stockholders' equity	253,079	272,976
Total liabilities and stockholders' equity	$ 275,062	$ 298,642