CONDENSED BALANCE SHEETS - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 10,600,000	$ 10,271,000
Marketable securities	60,478,000	79,538,000
Prepaid expenses and other assets	2,962,000	1,343,000
Total current assets	74,040,000	91,152,000
Property, plant and equipment, net	1,822,000	255,000
Operating lease right-of-use asset	178,000
Deposits	34,000	499,000
Total assets	76,074,000	91,906,000
Current liabilities:
Accounts payable	1,010,000	922,000
Accrued expenses	3,193,000	1,517,000
Due to related party		38,000
Operating lease liability	127,000
Total current liabilities	4,330,000	2,477,000
Operating lease liability	91,000
Total liabilities	4,421,000	2,477,000
Commitments and Contingencies
Stockholders’ equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized; no shares issued and outstanding as of September 30, 2019 and December 31, 2018
Common stock, $0.0001 par value; 200,000,000 authorized as of September 30, 2019 and December 31, 2018; 25,849,941 shares issued and 25,744,797 shares outstanding as of September 30, 2019 and 25,809,900 shares issued and 25,704,756 shares outstanding as of December 31, 2018	3,000	3,000
Treasury stock, at cost, 105,144 shares as of September 30, 2019 and December 31, 2018	0	0
Additional paid-in capital	125,178,000	122,526,000
Accumulated deficit	(53,555,000)	(33,083,000)
Accumulated other comprehensive gain (loss)	27,000	(17,000)
Total stockholders’ equity	71,653,000	89,429,000
Total liabilities and stockholders’ equity	$ 76,074,000	$ 91,906,000