Condensed Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 352,446	$ 94,578
Prepaid and other assets	1,371	1,098
Total current assets	353,817	95,676
Property and equipment, net	771	631
Restricted cash	124	0
Other assets	643	600
Total assets	355,355	96,907
Current liabilities:
Accounts payable and accrued liabilities	5,441	2,308
Accrued compensation	1,319	1,314
Deferred revenue, current portion	4,860	3,840
Long-term debt, current portion	0	2,774
Total current liabilities	11,620	10,236
Lease liabilities, net of current portion	679	393
Deferred revenue, net of current portion	12,760	15,100
Long-term debt, net of current portion	0	1,770
Other long-term liabilities	0	45
Total liabilities	25,059	27,544
Commitments and contingencies (Note 7)	0	0
Convertible preferred stock, $0.0001 par value; authorized shares - none and 38,055 at June 30, 2020 and December 31, 2019, respectively; issued and outstanding – none and 37,267 at June 30, 2020 and December 31, 2019, respectively	0	134,720
Stockholders’ equity (deficit):
Preferred stock, $0.0001 par value, authorized shares – 40,000 and none at June 30, 2020 and December 31, 2019, respectively; issued and outstanding shares – none	0	0
Common stock, $0.0001 par value; authorized shares – 400,000 and 52,042 at June 30, 2020 and December 31, 2019, respectively; issued and outstanding shares – 37,527 and 2,989 at June 30, 2020 and December 31, 2019, respectively	4	0
Additional paid-in capital	369,118	(43,172)
Accumulated deficit	(38,826)	(22,185)
Total stockholders’ equity (deficit)	330,296	(65,357)
Total liabilities, convertible preferred stock and stockholders’ equity (deficit)	$ 355,355	$ 96,907