Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 11,506	$ 1,571
Short-term investments		1,415
Accounts receivable	1,796	630
Prepaid expenses and other current assets	1,343	137
Total current assets	14,645	3,753
Property and equipment, net	1,066	730
Intangible assets, net	19,413	40
Other long-term assets	103
Total assets	35,227	4,523
Current liabilities:
Accounts payable	962	1,390
Current portion of secured promissory note payable to Oxford Finance	1,667	1,528
Liability related to sale of future royalties, current portion	3,328
Other accrued current liabilities	1,518	1,605
Total current liabilities	7,475	4,523
Convertible promissory notes, long-term, related parties		35,282
Liability related to sale of future royalties, net of current portion	14,413
Secured promissory note payable to Oxford Finance, net of current portion	1,944	3,440
Other long-term liabilities	157
Total liabilities	23,989	43,245
Stockholders’ equity (deficit):
Preferred Stock: $0.10 par value; 5,000,000 shares authorized; none issued and outstanding as of December 31, 2018; 1,221,064 issued and outstanding as of December 31, 2017, with aggregate liquidation value of $39,956		1
Common Stock: $0.10 par value; 200,000,000 shares authorized; 7,141,189 and 138,492 shares issued and outstanding as of December 31, 2018 and 2017, respectively	714
Additional paid-in capital	108,513	41,259
Accumulated deficit	(97,989)	(79,982)
Total stockholders’ equity (deficit)	11,238	(38,722)
Total liabilities and stockholders’ equity (deficit)	$ 35,227	$ 4,523