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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Operating activities    
Net loss $ (13,967) $ (15,284)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 854 662
Non-cash lease expense 8 24
Depreciation 20 48
Loss on sale of property and equipment 75  
Acquired in-process research and development 8,210  
Transaction costs allocated to issuance of warrants 2,191  
Change in fair value of warrant liability (7,935)  
Change in operating assets and liabilities:    
Prepaid expenses and other assets 64 396
Accounts payable (202) (1,162)
Accrued and other liabilities (1,030) 182
Net cash used in operating activities (11,712) (15,134)
Investing activities    
Transaction costs in connection with asset acquisitions   (583)
Purchases of property and equipment   (3)
Sale of property and equipment 8  
Net cash provided by (used in) investing activities 8 (586)
Financing activities    
Proceeds from issuance of common shares, preferred shares and warrants 32,250 24,000
Payment of issuance costs (3,569) (2,089)
Exercise of stock options   115
Net cash provided by financing activities 28,681 22,026
Net increase in cash 16,977 6,306
Net foreign exchange difference   (8)
Cash at beginning of period 16,387 10,089
Cash at end of period 33,364 16,387
Supplemental non-cash investing and financing transactions:    
Modification of right-of-use asset and associated lease liability 62  
Unpaid issuance costs 80  
Reclass of warrant liabilities upon exercise of warrants $ 5,564 $ 115