5.Revenue

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2017		2018		2017		2018
Collaboration revenues	$	—	$	—	$	—	$	6,500
Research premium	871		709		2,376		1,479
Government grants	154		138		301		419
Grants from WWFF	26		—		52		—

Total	$	1,051	$	847	$	2,729	$	8,398

The collaboration revenues for the six months ended June 30, 2018 reflect the income recorded from the Sinovant License Agreement (see Note 9) and includes the $5.0 million non-refundable upfront payment received in the first quarter of 2018 as consideration for entering into the Sinovant License Agreement as well as $1.5 million of variable consideration related a future milestone payment that the Company believes is probable to be met and received.