Consolidated Balance Sheets - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 5,047,325	$ 4,780,107
Other receivables	429,722	555,210
Prepaid expenses	3,844,764	1,108,615
Total current assets	9,321,811	6,443,932
Property and equipment, net	51,582	63,531
Other non-current assets	840,572	935,325
Total assets	10,213,965	7,442,788
Current liabilities
Accounts payable	1,531,497	1,083,183
Accrued expenses	1,690,626	2,098,653
Deferred grant funding	1,089,064	2,019,674
Current portion of lease liabilities	404,395	410,896
Total current liabilities	4,715,582	5,612,406
Deferred license revenue	1,000,000	0
Contingent consideration	1,000,000	1,000,000
Lease liabilities long-term	284,200	389,556
Total liabilities	6,999,782	7,001,962
Commitments and contingencies (Note 8)
Stockholders' equity
Preferred stock, $0.01 par value, 5,000,000 shares authorized; None issued and outstanding	0	0
Common stock, $0.0001 par value; 120,000,000 shares authorized; 24,700,553 and 19,683,401 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	2,470	1,968
Accumulated other comprehensive loss	(125,569)	(102,625)
Additional paid-in capital	51,612,721	44,564,674
Accumulated deficit	(48,275,439)	(44,023,191)
Total stockholders' equity	3,214,183	440,826
Total liabilities and stockholders' equity	$ 10,213,965	$ 7,442,788