Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating expenses:
Research and development	$ 5,324	$ 5,066
Acquired in‑process research and development	12,151	8,815
General and administrative	2,701	1,605
Total operating expenses	20,176	15,486
Loss from operations	(20,176)	(15,486)
Interest (expense) income, net	(22)	(40)
Loss on note extinguishment	(1,114)
Other income (expense), net		(3)
Loss before income taxes	(21,312)	(15,529)
Provision for income taxes	0
Net loss	(21,312)	(15,529)
Other comprehensive income, net of tax	10	2
Comprehensive loss	$ (21,302)	$ (15,527)
Loss per share:
Net loss per share, basic and diluted (Note 11)	$ (4.08)	$ (3.65)
Weighted average common shares outstanding:
Basic and diluted	5,224,178	4,251,330