CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 125,549	$ 135,173
Restricted cash	5,039	460
Prepaid expenses and other current assets	1,049	152
Total current assets	131,637	135,785
Property and equipment, net	11,779	11,407
Other assets	2,010	436
Total assets	145,426	147,628
Current liabilities:
Accounts payable	2,938	2,483
Accrued liabilities	1,846	2,411
Deferred rent, current portion	3	28
Term loan, current portion	278	387
Deferred revenue from related party, current portion	5,240	4,989
Total current liabilities	10,305	10,298
Deferred rent, net of current portion	260	242
Term loan, net of current portion	4,722	73
Deferred revenue from related party, net of current portion	20,628	21,736
Total liabilities	35,915	32,349
Commitments and contingencies (Note 6)
Total Preferred Stock	162,223	162,223
Stockholders’ deficit:
Common stock, par value of $0.001 per share; 158,745,671 shares authorized at March 31, 2019 and December 31, 2018, 1,379,509 and 1,374,812 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	11	11
Additional paid-in capital	729	342
Accumulated deficit	(53,452)	(47,297)
Total stockholders’ deficit	(52,712)	(46,944)
Total liabilities, preferred stock and stockholders’ deficit	145,426	147,628
Series A Preferred Stock
Current liabilities:
Total Preferred Stock	71,000	71,000
Series B Preferred Stock
Current liabilities:
Total Preferred Stock	$ 91,223	$ 91,223