CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 127,178	$ 142,018
Investments available for sale	34,482	27,254
Accounts receivables	19	17
Prepaid expenses and other current assets	514	203
Total current assets	162,193	169,492
Prepaid expenses and other assets	879	1,056
Property and equipment, net	15	18
Deferred tax assets	16,635	15,950
Total assets	179,722	186,516
Current liabilities:
Accounts payable and accrued liabilities	350	338
Accrued payroll and related expenses	333	270
Accrued licensing costs	0	355
Other liabilities, current	55	58
Total current liabilities	738	1,021
Other liabilities	18	46
Total liabilities	756	1,067
Commitments and contingencies (Note 4)
Stockholders' equity:
Preferred stock, par value $0.0001 per share Authorized: 10,000,000 shares at June 30, 2022 and December 31, 2021; Issued and outstanding: 0 shares at June 30, 2022 and December 31, 2021	0	0
Common stock, par value $0.0001 per share Authorized: 100,000,000 shares at June 30, 2022 and December 31, 2021; Issued and outstanding: 71,424,650 shares at June 30, 2022 and 71,232,856 at December 31, 2021	7	7
Additional paid-in capital	238,006	236,445
Accumulated deficit	(58,692)	(50,935)
Accumulated other comprehensive loss	(355)	(68)
Total stockholders' equity	178,966	185,449
Total liabilities and stockholders' equity	$ 179,722	$ 186,516