Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 230,057	$ 177,947
Prepaid expenses and other current assets	11,413	10,951
Total current assets	241,470	188,898
Property and equipment, net	2,549	1,968
Operating lease right-of-use assets	12,001	12,889
Other assets, noncurrent	2,247	2,356
Total assets	258,267	206,111
Current liabilities:
Accounts payable	9,775	12,321
Accrued expenses	27,475	28,716
Deferred revenue	16,578	3,944
Operating lease liabilities	2,404	2,303
Other current liabilities	231	239
Total current liabilities	56,463	47,523
Operating lease liabilities, noncurrent	10,567	11,247
Long-term debt, net	24,702	24,626
Deferred revenue, noncurrent	25,620	0
Other liabilities, noncurrent	389	974
Total liabilities	117,741	84,370
Commitments
Stockholders' equity:
Preferred stock, $0.0001 par value; 25,000,000 shares authorized; 0 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	0	0
Common stock, $0.0001 par value; 175,000,000 shares authorized; 87,073,084 and 73,709,056 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	9	7
Additional paid-in capital	638,254	572,213
Accumulated deficit	(497,737)	(450,479)
Total stockholders’ equity	140,526	121,741
Total liabilities and stockholders’ equity	$ 258,267	$ 206,111