Selected Financial Data (Tables)

9 Months Ended

Sep. 30, 2018

Quarterly Financial Data [Abstract]

Summary of Selected Financial Data

The following table includes selected financial data for each of the quarters in 2017 and for each of the quarters ended March 31, 2018, June 30, 2018 and September 30, 2018.

				For the quarter ended
(in thousands, except per share and share data)	September 30, 2018			June 30, 2018			March 31, 2018			December 31, 2017			September 30, 2017			June 30, 2017			March 31, 2017
				(Unaudited)
Revenue in conjunction    with strategic alliances    and collaborations	$	3,423		$	2,386		$	2,367		$	2,020		$	3,296		$	3,761		$	3,921
Research and    development expenses,    net		3,969			4,225			3,941			4,353			3,563			3,769			4,233
General and    administrative    expenses		3,810			8,233			5,098			2,634			2,846			1,058			1,034
Net loss from operations		(4,356	)		(10,072	)		(6,672	)		(4,967	)		(3,113	)		(1,066	)		(1,346	)
Net loss		(4,253	)		(9,950	)		(6,571	)		(5,280	)		(3,177	)		(1,099	)		(1,346	)
Net loss per share, basic    and diluted	$	(0.42	)	$	(0.99	)	$	(0.66	)	$	(0.86	)	$	(1.51	)	$	(0.54	)	$	(0.66	)
Weighted average shares    outstanding, basic and    diluted		10,092,891			10,057,048			10,027,834			6,151,580			2,099,318			2,031,599			2,031,599

			As of
	September 30, 2018		June 30, 2018		March 31, 2018		December 31, 2017		September 30, 2017			June 30, 2017			March 31, 2017
			(Unaudited)
Working capital	$	20,801	$	23,429	$	37,383	$	39,828	$	5,144		$	6,432		$	1,706
Total assets	$	37,115	$	44,322	$	52,483	$	52,024	$	12,221		$	13,354		$	9,678
Shareholders' equity (deficit)	$	14,151	$	17,795	$	27,543	$	33,794	$	(1,999	)	$	(826	)	$	253