Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash	$ 13,035	$ 10,089
Prepaid expenses	831	546
Other assets	28	48
Total current assets	13,894	10,683
Right-of-use assets and other	123	130
Property and equipment, net	143	155
Other assets	143	155
Total assets	14,160	10,968
Current liabilities:
Accounts payable	468	2,575
Accrued liabilities	452	1,096
Lease liability, short-term	24	24
Total current liabilities	944	3,695
Lease liability, long-term	65	70
Lease liability, long-term	65
Total liabilities	1,009	3,765
Commitments and contingencies (Notes 4, 5, 6 and 11)
Stockholders’ equity
Preferred stock, $0.001 par value; 10,000,000 shares authorized as of March 31, 2021 and December 31, 2020; no shares issued or outstanding as of March 31, 2021 and December 31, 2020.
Common stock, $0.001 par value per share, 100,000,000 shares authorized as of March 31, 2021 and December 31, 2020; 22,171,182 and 19,671,182 shares issued and outstanding as of March 31, 2021 and December 31, 2020, respectively.	22	20
Additional paid–in capital	82,990	73,713
Accumulated other comprehensive income	7	14
Accumulated deficit	(69,868)	(66,544)
Total stockholders’ equity	13,151	7,203
Total liabilities and stockholders’ equity	$ 14,160	$ 10,968