Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net loss	$ (34,188)	$ (6,579)
Adjustments to reconcile net loss to net cash used in operating activities:
In-process research and development	18,088
Noncash other income		(216)
Stock-based compensation	507	180
Noncash interest expense		1
Noncash compensation expense		10
Change in fair value of preferred stock warrants liability	1,268	(713)
Noncash lease expense	92
Changes in operating assets and liabilities:
Prepaid and other assets	(44)	(436)
Accounts payable	(4,762)	2,242
Accrued liabilities	(1,255)	(4)
Change in operation lease liability	(92)
Deferred grant revenue	3,640	(1,902)
Net cash used in operating activities	(16,746)	(7,417)
Cash flows from investing activities
Cash acquired in connection with the Merger	18,292
Acquisition related costs paid	(2,155)
Net cash provided by investing activities	16,137
Cash flows from financing activities
Proceeds from exercise of stock options	14	1
Proceeds from exercise of common stock warrants	1
Proceeds from the issuance of convertible preferred stock, net		17,873
Net cash provided by financing activities	15	17,874
Net (decrease) increase in cash and cash equivalents	(594)	10,457
Cash and cash equivalents at beginning of period	20,645	10,188
Cash and cash equivalents at end of period	20,051	$ 20,645
Supplemental disclosure of non-cash investing and financing activities:
Conversion of convertible preferred stock into common stock	46,588
Issuance of common stock to GTx stockholders	29,049
Reclassification of preferred stock warrants liability to additional paid-in capital	1,942
Net liabilities assumed in Merger	$ 5,177