Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 105,383	$ 21,661
Prepaid expenses and other current assets	3,030	249
Total current assets	108,413	21,910
Property and equipment, net	49	41
Other assets	1,644	122
Total assets	110,106	22,073
Current liabilities
Accounts payable	4,476	548
Accrued expenses and other current liabilities	6,340	1,887
Total current liabilities	10,816	2,435
Other liabilities	56	95
Total liabilities	10,872	2,530
Commitments and contingencies (see Note 6)
Convertible preferred stock, $0.001 par value; 57,932,090 and 33,645,447 shares authorized as of September 30, 2020 and December 31, 2019, respectively; 48,958,829 and 33,645,447 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively; liquidation preference of $178,106 and $70,606 as of September 30, 2020 and December 31, 2019, respectively	175,745	69,114
Stockholders’ equity (deficit):
Common stock, $0.001 par value; 80,529,575 and 53,070,161 shares authorized as of September 30, 2020 and December 31, 2019, respectively; 10,109,847 and 10,091,100 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	10	10
Additional paid-in capital	9,295	4,632
Accumulated deficit	(85,816)	(54,213)
Total stockholders’ deficit	(76,511)	(49,571)
Total liabilities, convertible preferred stock and stockholders’ deficit	$ 110,106	$ 22,073