Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating activities
Net loss	$ (21,312)	$ (15,529)
Adjustments to reconcile net loss to net cash used in operating activities:
In process research and development exchanged for common stock	12,151	1,815
Stock-based compensation	118
Non cash interest related to convertible notes – related party	129	41
Loss on note extinguishment – related party	1,114
Depreciation	17
Change in assets and liabilities, net of the effects of the reverse asset acquisition:
Prepaid expenses and other assets	824	(969)
Accounts payable	(1,046)	170
Accrued and other liabilities	966	21
Net cash used in operating activities	(7,039)	(14,451)
Investing activities
Cash acquired in connection with reverse asset acquisition	1,525
Transaction costs in connection with reverse asset acquisition	(7,368)
Purchases of property and equipment	(214)	(3)
Net cash used in investing activities	(6,057)	(3)
Financing activities
Proceeds from issuance of redeemable preferred stock	24,240	16,800
Proceeds from issuance of convertible notes to related parties		500
Exercise of stock options	1
Issuance costs	(74)	(54)
Net cash provided by financing activities	24,167	17,246
Net increase in cash and restricted cash	11,071	2,792
Net foreign exchange difference	7	3
Cash and restricted cash at beginning of period	2,845	50
Cash and restricted cash at end of period	13,923	2,845
Supplemental disclosure of cash flow information:
Cash paid for interest	1
Supplemental non-cash financing transactions:
Conversion of convertible notes to common stock	548
Common stock and warrants issued in connection with the merger	4,466
Net liabilities assumed in connection with the merger	1,537
Unpaid transaction costs in accounts payable and accrued expenses related to the merger	306
Beneficial conversion feature related to convertible notes	104	$ 401
Operating lease right of use asset obtained in exchange for operating lease	126
SeriesA and Series B Redeemable Convertible Preferred Stock
Supplemental non-cash financing transactions:
Conversion of Series A and Series B preferred stock to common	$ 40,912