Condensed Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 410,013	$ 321,462
Marketable securities	3,016	6,679
Prepaid and other assets	8,929	3,537
Total current assets	421,958	331,678
Property and equipment, net	3,220	1,468
Restricted cash	251	251
Other assets	488	501
Total assets	425,917	333,898
Current liabilities:
Accounts payable and accrued liabilities	12,004	7,745
Accrued compensation	6,153	3,152
Deferred revenue, current portion	4,261	3,690
Total current liabilities	22,418	14,587
Lease liabilities, net of current portion	877	938
Deferred revenue, net of current portion	7,745	12,150
Total liabilities	31,040	27,675
Commitments and contingencies (Note 8)	0	0
Stockholders’ equity:
Preferred stock, $0.0001 par value; authorized shares – 40,000; issued and outstanding shares – none	0	0
Common stock, $0.0001 par value; authorized shares – 400,000; issued and outstanding shares – 46,897 and 37,569 at September 30, 2021 and December 31, 2020, respectively	5	4
Additional paid-in capital	540,884	372,764
Accumulated other comprehensive loss	(1)	(5)
Accumulated deficit	(146,011)	(66,540)
Total stockholders’ equity	394,877	306,223
Total liabilities and stockholders’ equity	$ 425,917	$ 333,898