Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 67,695,253	$ 71,430,954
Prepaid expenses and other current assets	1,135,900	577,992
Total current assets	68,831,153	72,008,946
Goodwill	9,600,240	9,600,240
In-process research and development	4,800,000	4,800,000
Property and equipment, net	53,002	57,565
Right-of-use asset	779,036	824,215
Other non-current assets	111,756	115,492
Total assets	84,175,187	87,406,458
Current liabilities:
Accounts payable	665,249	402,740
Accrued liabilities and other current liabilities	2,147,047	2,298,203
Operating lease liability	163,945	131,965
Total current liabilities	2,976,241	2,832,908
Deferred tax liability	201,792	201,792
Other non-current liabilities	632,869	694,674
Total liabilities	3,810,902	3,729,374
Commitments and contingencies (Note 4)
Stockholders’ equity:
Common stock, $0.001 par value; 100,000,000 shares authorized at March 31, 2022 and December 31, 2021; 49,043,246 and 49,043,246 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	49,043	49,043
Additional paid-in capital	476,869,065	476,788,012
Accumulated other comprehensive loss	(106,312)	(98,877)
Accumulated deficit	(396,447,511)	(393,061,094)
Total stockholders’ equity	80,364,285	83,677,084
Total liabilities and stockholders' equity	$ 84,175,187	$ 87,406,458