CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 11,317	$ 24,736
Restricted cash	404	103
Prepaid expenses and other current assets	338	620
Total current assets	12,059	25,459
Restricted cash, non-current		300
Right of use assets, net	357	863
Property and equipment, net	6	67
Other non-current assets	186	186
Total assets	12,608	26,875
Current liabilities:
Accounts payable	1,525	1,192
Accrued research and development	1,888	1,397
Accrued expenses	1,370	1,711
Current portion of operating lease liabilities	396	752
Total current liabilities	5,179	5,052
Long term operating lease liabilities		203
Common stock warrant liability	1	1
Total liabilities	5,180	5,256
Commitments and contingencies
Stockholders' equity:
Common stock, $0.01 par value per share; 200,000,000 shares authorized and and 9,545,451 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	95	95
Preferred stock, $0.01 par value per share; 5,000,000 shares authorized, zero shares issued and outstanding at June 30, 2022 and December 31, 2021
Additional paid-in capital	254,395	253,771
Accumulated deficit	(247,062)	(232,247)
Total stockholders' equity	7,428	21,619
Total liabilities and stockholders' equity	$ 12,608	$ 26,875