Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 174,821	$ 191,157
Related party receivable	154	85
Prepaid expenses and other current assets	3,818	4,678
Total current assets	178,793	195,920
Property and equipment, net	1,317	1,259
Operating lease, right of use asset	3,781	4,010
Other assets	2,779	2,631
Total assets	186,670	203,820
Current liabilities:
Accounts payable	2,240	3,151
Related party payable	359	316
Lease liabilities	584	554
Accrued expenses and other current liabilities	12,206	6,409
Total current liabilities	15,389	10,430
Debt, non-current	16,522	16,112
Lease liabilities, non-current	4,293	4,591
Embedded derivative	1,124	1,165
Other liabilities	31	95
Total liabilities	37,359	32,393
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized; no shares issued and outstanding
Common stock, $0.001 par value; 150,000,000 shares authorized as of June 30, 2020 and December 31, 2019, respectively; 38,561,026 and 38,040,693 shares issued and outstanding as of June 30, 2020 and December 31, 2019, respectively	39	38
Additional paid-in-capital	304,050	274,494
Accumulated deficit	(154,778)	(103,105)
Total stockholders’ equity	149,311	171,427
Total liabilities and stockholders' equity	$ 186,670	$ 203,820