Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net loss	$ (24,261,685)	$ (12,784,605)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	1,951,317	931,517
Depreciation	40,573	16,624
Loss on disposal of property and equipment	57,578
Changes in operating assets and liabilities
Prepaid expenses and other current assets	102,957	(262,207)
Accounts payable	(1,004,260)	499,566
Accrued expenses	(2,391,433)	(377,813)
Other non-current assets	(10,620)	(20,380)
Net cash used in operating activities	(25,515,573)	(11,997,298)
Cash flows from investing activities:
Purchase of property and equipment	(126,080)	(84,928)
Net cash used in investing activities	(126,080)	(84,928)
Cash flows from financing activities:
Proceeds from the issuance of common stock, net of issuance costs		42,623,281
Proceeds from the exercise of stock options	92,272
Net cash provided by financing activities	92,272	42,623,281
Net (decrease) increase in cash and cash equivalents	(25,549,381)	30,541,055
Cash and cash equivalents, beginning of period	41,671,284	15,644,355
Cash and cash equivalents, end of period	$ 16,121,903	$ 46,185,410