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CONDENSED BALANCE SHEETS (Unaudited) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 74,842 $ 5,510
Marketable securities 24,731 25,735
Prepaid expenses and other current assets 1,238 1,216
Total current assets 100,811 32,461
Property and equipment, net 1,045 743
Other assets 314 2,147
Total assets 102,170 35,351
Current liabilities:    
Accounts payable 1,154 1,666
Accrued liabilities 8,320 5,437
Notes payable, current portion 7,200 7,200
Deferred license revenue 41 45
Deferred grant funding 23 34
Total current liabilities 16,738 14,382
Notes payable, net of current portion 5,276 10,241
Convertible promissory notes payable (due to related parties of $0 and $1,025 at September 30, 2017 and December 31, 2016, respectively)   3,398
Convertible promissory notes subscription liability   140
Long-term portion of deferred license revenue 41 68
Preferred stock warrant liabilities   126
Total liabilities 22,055 28,355
Commitments and contingencies
Convertible preferred stock, $0.001 par value; 51,000,000 shares authorized at December 31, 2016; 46,163,605 shares issued and outstanding at December 31, 2016; aggregate liquidation preferences of $131,720 at December 31, 2016   131,413
Stockholders’ equity (deficit):    
Preferred stock, $0.001 par value; 10,000,000 shares authorized at September 30, 2017; no shares issued or outstanding at September 30, 2017
Common stock, $0.001 par value; 200,000,000 and 77,800,000 shares authorized at September 30, 2017 and December 31, 2016, respectively; 19,809,449 and 2,202,517 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively 20 2
Additional paid-in capital 236,190 3,581
Accumulated deficit (156,092) (128,000)
Accumulated other comprehensive loss (3)  
Total stockholders’ equity (deficit) 80,115 (124,417)
Total liabilities, convertible preferred stock and stockholders’ equity (deficit) $ 102,170 $ 35,351