BALANCE SHEETS - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 74,025,000	$ 61,031,000
Restricted cash	0	20,000
Other receivables	1,233,000	233,000
Prepaid expenses and other assets	3,565,000	1,344,000
Total current assets	78,823,000	62,628,000
Property and equipment, net	1,924,000	355,000
Operating lease right-of-use assets	1,715,000	0
Other assets	32,000	43,000
Total assets	82,494,000	63,026,000
Current liabilities:
Current portion of long-term debt	2,378,000	0
Accounts payable	2,921,000	1,806,000
Accrued expenses and other current liabilities	3,180,000	2,771,000
Total current liabilities	8,479,000	4,577,000
Long-term debt, net	12,326,000	7,500,000
Operating lease liabilities, net	1,508,000	0
Other long-term liabilities	203,000	0
Deferred rent		22,000
Total liabilities	22,516,000	12,099,000
Commitments and contingencies (Note 7)
Stockholders’ equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized at December 31, 2019 and 2018; zero shares issued and outstanding at December 31, 2019 and 2018	0	0
Common stock, $0.001 par value; 200,000,000 shares authorized at December 31, 2019 and 2018; 28,796,371 shares issued and 28,766,404 shares outstanding at December 31, 2019; 24,528,242 shares issued and 24,498,275 shares outstanding at December 31, 2018	29,000	25,000
Treasury stock, at cost, 29,967 shares as of December 31, 2019 and 2018	(24,000)	(24,000)
Additional paid-in capital	222,131,000	173,837,000
Accumulated deficit	(162,158,000)	(122,911,000)
Total stockholders’ equity	59,978,000	50,927,000
Total liabilities and stockholders' equity	$ 82,494,000	$ 63,026,000