Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 11,226	$ 19,266
Short-term investments	206,184	57,375
Prepaid expenses and other current assets	3,894	1,181
Total current assets	221,304	77,822
Property and equipment, net	2	8
Long-term investments		19,689
Other long-term assets	3,480	1,414
Total assets	224,786	98,933
Current liabilities:
Accounts payable	3,459	1,379
Accrued and other current liabilities	6,633	3,726
Total current liabilities	10,092	5,105
Commitments and contingencies (Note 6)
Convertible preferred stock, $0.0001 par value; 0 and 180,059,639 shares authorized, as of December 31, 2021 and 2020, respectively; 0 and 21,435,632 issued and outstanding as of December 31, 2021 and 2020, respectively; aggregate liquidation preference of $0 as of December 31, 2021	0	162,612
Stockholders' equity (deficit):
Preferred stock, $0.0001 par value; 10,000,000 and 0 shares authorized as of December 31, 2021 and 2020, respectively; 0 issued and outstanding as of December 31, 2021 and 2020, respectively	0	0
Common stock, $0.0001 par value; 300,000,000 and 228,300,000 shares authorized as of December 31, 2021 and 2020, respectively; 33,531,743 and 1,030,023 shares issued and outstanding as of December 31, 2021 and 2020, respectively	3	0
Additional paid-in capital	327,387	1,561
Accumulated other comprehensive income (loss)	(43)	(3)
Accumulated deficit	(112,653)	(70,342)
Total stockholders' equity (deficit)	214,694	(68,784)
Total liabilities, convertible preferred stock and stockholders' equity (deficit)	$ 224,786	$ 98,933