Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 10,720	$ 16,351
Prepaid expenses	958	97
Assets held for sale	53
Other current assets	773	1,153
Total current assets	12,504	17,601
Property, equipment and leasehold improvements, net	37	227
Restricted cash - non-current	150	150
Operating lease right-of-use assets	643	844
Total assets	13,334	18,822
Current liabilities:
Accounts payable	339	617
Operating lease liabilities	474	396
Accrued expenses	555	1,407
Total current liabilities	1,368	2,420
Other liabilities	109	103
Operating lease liabilities - non-current	280	553
Total liabilities	1,757	3,076
Commitments and contingencies (Note 5)
Stockholders' equity:
Preferred stock, $0.00001 par value, authorized 1,000,000 at March 31, 2023 and December 31, 2022. No Preferred Stock issued and outstanding at March 31, 2023 and December 31, 2022.
Common stock, $0.00001 par value, authorized 250,000,000 and 2,000,000 at March 31, 2023 and December 31, 2022, respectively. 3,105,446 and 2,429,446 shares issued and outstanding including 0 and 254 shares of unvested restricted stock awards, at March 31, 2023 and December 31, 2022, respectively.	3	3
Additional paid-in capital	264,462	264,362
Accumulated deficit	(252,888)	(248,619)
Total stockholders' equity	11,577	15,746
Total liabilities and stockholders' equity	$ 13,334	$ 18,822