CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Costs and expenses:
General and administrative	$ 4,400	$ 4,952	$ 14,139	$ 15,944
Research and development	5,168	5,554	16,836	13,868
Gain on fair value remeasurement of deferred purchase consideration				(230)
Loss (gain) on fair value remeasurement of contingent consideration	420	(1,744)	549	462
Total costs and expenses	9,988	8,762	31,524	30,044
Loss from operations	(9,988)	(8,762)	(31,524)	(30,044)
Other income (expense):
Interest income	570	708	1,578	2,101
Interest expense	(1,478)	(1,459)	(4,391)	(4,346)
Grant income	1,946	2,970	4,001	2,970
Other expense, net		(2,161)		(4,253)
Total other income (expense)	1,038	58	1,188	(3,528)
Net loss	$ (8,950)	$ (8,704)	$ (30,336)	$ (33,572)
Net loss per share attributable to common stockholders-basic (in dollar per share)	$ (1.93)	$ (3.41)	$ (8.68)	$ (14.36)
Net loss per share attributable to common stockholders-diluted (in dollar per share)	$ (1.93)	$ (3.41)	$ (8.68)	$ (14.36)
Weighted average shares outstanding-basic (in shares)	4,627,578	2,550,210	3,494,339	2,337,492
Weighted average common shares outstanding -diluted (in shares)	4,627,578	2,550,210	3,494,339	2,337,492
Statement of Comprehensive Loss
Net loss	$ (8,950)	$ (8,704)	$ (30,336)	$ (33,572)
Other comprehensive (loss) income:
Change in fair value of investments		(8)		1
Total other comprehensive (loss) income		(8)		1
Total comprehensive loss	$ (8,950)	$ (8,712)	$ (30,336)	$ (33,571)