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Condensed Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 6,603 $ 13,156
Prepaid expenses 200 136
Total current assets 6,803 13,292
Property and equipment, net 268 119
Other long-term assets, net 454 32
Total assets 7,525 13,443
Current liabilities:    
Accounts payable 793 539
Accrued liabilities 404 254
Total current liabilities 1,197 793
Warrant liability 1,577 520
Total liabilities 2,774 1,313
Commitments and contingencies (Note 11)
Redeemable convertible preferred stock - Series A $0.001 par value, 10,000,000 shares authorized as of December 31, 2017 and September 30, 2018; 6,685,082 shares issued and outstanding as of December 31, 2017 and September 30, 2018; aggregate liquidation preference of $20,698 and $21,598 as of December 31, 2017 and September 30, 2018, respectively 21,161 19,004
Stockholders' deficit    
Common stock, $0.001 par value; 50,000,000 shares authorized as of December 31, 2017 and September 30, 2018, respectively; 6,000,000 and 6,218,980 shares issued and outstanding at December 31, 2017 and September 30, 2018, respectively 6 6
Additional paid-in capital 3,390 1,759
Accumulated deficit (19,806) (8,639)
Total stockholders' deficit (16,410) (6,874)
Total liabilities, redeemable convertible preferred stock and Stockholders' deficit $ 7,525 $ 13,443