Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net loss	$ (21,280,891)	$ (14,194,431)
Adjustments to reconcile net loss to net cash used in operating activities:
Non-cash interest expense		242,982
Stock-based compensation	1,318,153	418,093
Depreciation	27,744	3,997
Loss on disposal of property and equipment		2,078
Write-off of deferred financing costs		1,901
Changes in operating assets and liabilities
Prepaid expenses and other current assets	(193,134)	(336,834)
Accounts payable	937,956	(287,538)
Accrued expenses	2,609,101	68,144
Other noncurrent assets	(6,732)	(13,648)
Net cash used in operating activities	(16,587,803)	(14,095,256)
Cash flows from investing activities:
Cash acquired in merger, net of payment in lieu of fractional shares		1,030,123
Purchase of property and equipment	(95,627)	(62,842)
Net cash (used in) provided by investing activities	(95,627)	967,281
Cash flows from financing activities:
Proceeds from issuance of common stock, net of issuance costs	42,622,700	21,506,842
Deferred financing costs		(68,530)
Proceeds from exercise of stock options	87,659
Proceeds from convertible notes payable		5,500,000
Net cash provided by financing activities	42,710,359	26,938,312
Net increase in cash and cash equivalents	26,026,929	13,810,337
Cash and cash equivalents, beginning of the year	15,644,355	1,834,018
Cash and cash equivalents, end of the year	$ 41,671,284	15,644,355
Supplemental cash flow information and non- cash financing transactions:
Accretion of issuance costs on Series A Convertible Redeemable Preferred stock		51,943
Accretion of issuance costs on Series B Convertible Redeemable Preferred stock		127,780
Conversion of Series A Convertible Redeemable Preferred stock to common stock		4,166,164
Conversion of Series B Convertible Redeemable Preferred stock to common stock		8,149,999
Conversion of convertible notes payable and accrued interest to common stock		5,674,452
Issuance of common stock in merger (Note 1)		$ 6,978,916