CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating expenses:
Research and development	$ 4,487	$ 927
General and administrative	3,539	961
Total operating expenses	8,026	1,888
Loss from operations	(8,026)	(1,888)
Other income:
Interest income	547	41
Total other income	547	41
Net loss	$ (7,479)	$ (1,847)
Net loss per share, basic and diluted	$ (0.30)	$ (0.65)
Weighted average common shares outstanding, basic and diluted	24,857,771	2,850,640
Net loss	$ (7,479)	$ (1,847)
Other comprehensive loss:
Unrealized gain on marketable securities	28
Comprehensive loss	$ (7,451)	$ (1,847)