Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 112,861,504	$ 130,088,869
Prepaid expenses and other current assets	1,475,223	2,955,878
Total current assets	114,336,727	133,044,747
Property and equipment, net	43,906	41,639
Right of use lease asset	408,794	521,392
Other noncurrent assets	29,368	107
Total assets	114,818,795	133,607,885
Current liabilities:
Accounts payable	5,443,126	2,176,852
Accrued expenses	8,827,860	6,642,553
Lease liability—current	241,527	242,329
Total current liabilities	14,512,513	9,061,734
Lease liability—noncurrent	185,926	302,621
Total liabilities	14,698,439	9,364,355
Commitments and contingencies (Note 7)
Stockholders’ equity:
Common stock, $0.001 par value, 400,000,000 shares authorized, 21,186,827 and 21,022,752 shares issued and outstanding at June 30, 2020 and December 31, 2019, respectively.	21,187	21,023
Additional paid-in capital	228,597,264	226,284,548
Accumulated other comprehensive loss	(12,201,648)	(11,533,778)
Accumulated deficit	(116,296,447)	(90,528,263)
Total stockholders’ equity	100,120,356	124,243,530
Total liabilities and stockholders’ equity	$ 114,818,795	$ 133,607,885