Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 30,323	$ 53,961
Accounts receivable	227	100
Prepaid expenses	647	928
Other current assets	482	468
Total current assets	31,679	55,457
Property and equipment, net	0	65
Operating lease right-of-use asset	1,310	1,402
Other assets	2,224	2,407
Total assets	35,213	59,331
Current liabilities:
Accounts payable	2,767	1,828
Accrued research and development costs	4,759	6,353
Accrued expenses and other current liabilities	2,326	2,904
Total current liabilities	9,852	11,085
Commitments and contingencies (Note 6)	0	0
Stockholders' equity
Common stock, no par value, 400,000,000 shares authorized and 43,479,835 issued and outstanding at June 30, 2022 and 400,000,000 shares authorized and 43,410,185 issued and outstanding at December 31, 2021	0	0
Accumulated deficit	(241,442)	(215,076)
Paid-in capital	266,828	263,345
Accumulated other comprehensive loss	(25)	(23)
Total stockholders' equity	25,361	48,246
Total liabilities and stockholders' equity	$ 35,213	$ 59,331