CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 41,289	$ 74,268
Restricted cash		182
Short-term investments	3,897	1,010
Prepaid expenses	1,643	2,791
Other current assets	340	24
Total current assets	47,169	78,275
Restricted cash	182
Property and equipment, net	62	69
Right-of-use lease assets - operating, net	677	410
Deposits and other assets	310	283
Total assets	48,400	79,037
Current liabilities
Accounts payable	996	544
Accrued expenses	5,178	3,995
Term loan, short-term	9,880	9,805
Lease obligation - operating, short-term	594	476
Other current liabilities	528	26
Total current liabilities	17,176	14,846
Term loan, long-term		7,354
Lease obligation - operating, long-term	114
Other liabilities		367
Total liabilities	17,290	22,567
Commitments and contingencies (Note 11)
Stockholders’ equity
Preferred stock, $0.0001 par value; 10,000,000 shares authorized and no shares issued and outstanding
Common stock, $0.0001 par value; 150,000,000 shares authorized as of September 30, 2022; 27,366,707 and 27,402,121 shares issued and outstanding as of December 31, 2021 and September 30, 2022, respectively	3	3
Additional paid-in capital	248,395	246,166
Accumulated deficit	(217,288)	(189,698)
Accumulated other comprehensive loss		(1)
Total stockholders’ equity	31,110	56,470
Total liabilities and stockholders’ equity	$ 48,400	$ 79,037