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Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Current assets:    
Cash and cash equivalents $ 7,376 $ 15,542
Prepaid expenses and other current assets 764 858
Total current assets 8,140 16,400
Property and equipment, net 135 141
Other assets, long-term 6,426 750
Restricted cash 137 137
Total assets 14,838 17,428
Current liabilities:    
Accounts payable 1,100 1,590
Accrued expenses 99 1,000
Accrued lease liability - current portion 1,118  
Current portion of deferred rent   45
Current portion of deferred lease incentive   238
Total current liabilities: 2,317 2,873
Accrued expenses due to Intrexon Corporation 1,125 1,125
Accrued lease liability - long-term 6,918  
Deferred revenue 10,000 10,000
Deferred rent, net of current portion   351
Deferred lease incentive, net of current portion   1,025
Warrant liability 10 2,512
Total liabilities 20,370 17,886
Commitments and contingencies (Note 5)
Convertible preferred stock and stockholders' deficit:    
Convertible preferred stock, $0.01 par value; 30,000 shares authorized, 400 shares issued and outstanding at March 31, 2019 and December 31, 2018
Common stock, $0.01 par value; 100,000,000 shares authorized, 94,599,601 and 62,025,398 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively 839 513
Additional paid-in capital 219,874 215,859
Accumulated deficit (226,245) (216,830)
Total stockholders' deficit (5,532) (458)
Total liabilities and stockholders' deficit $ 14,838 $ 17,428