Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 361,422	$ 73,278
Short-term marketable securities		28,208
Prepaid expenses and other current assets	3,339	607
Total current assets	364,761	102,093
Property and equipment, net	569	739
Other assets	201	201
Total assets	365,531	103,033
Current liabilities
Accounts payable	1,607	2,837
Accrued expenses	4,803	1,686
Total current liabilities	6,410	4,523
Other liabilities		51
Total liabilities	6,410	4,574
Commitments and contingencies (see Note 6)
Convertible preferred stock, accumulated liquidation value of $0 and $169,385 at December 31, 2020 and 2019, respectively		168,933
Stockholders’ equity (deficit):
Preferred stock, $0.00001 par value, 5,000,000 and no shares authorized at December 30, 2020 and 2019, respectively, no shares issued or outstanding at December 31, 2020 and 2019, respectively
Common stock, $0.00001 par value, 1,000,000,000 and 33,250,829 shares authorized; 44,777,818 and 3,046,200 shares issued and outstanding at December 31, 2020 and 2019, respectively
Additional paid-in capital	469,001	4,969
Accumulated deficit	(109,880)	(75,440)
Accumulated other comprehensive loss		(3)
Total stockholders’ equity (deficit)	359,121	(70,474)
Total liabilities, convertible preferred stock, and stockholders’ equity (deficit)	$ 365,531	$ 103,033