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Interim Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Operating activities:    
Net loss $ (5,140) $ (6,702)
Adjustments to reconcile net loss to net cash flows used in operating activities:    
Depreciation and amortization 51 44
Non-cash and accrued interest 1
Interest income and unrealized gains from marketable securities (35)
Share-based compensation expense 761 861
Changes in assets and liabilities:    
Prepaid expenses and other assets 318 49
Other payables and accrued liabilities (1,012) (384)
Net cash flows used in operating activities (5,057) (6,131)
Investing activities:    
Purchases of property and equipment (10) (78)
Purchases of marketable securities (3,194)
Proceeds from sale of a marketable security 1,000
Proceeds from maturities of marketable securities 3,789
Short term deposit 3
Net cash flows provided by (used in) investing activities 1,588 (78)
Financing activities:    
Issuance of common stock and warrants, net of issuance costs 6,719
Net cash flows provided by financing activities 6,719
Increase (decrease) in cash, cash equivalents and restricted cash 3,250 (6,209)
Cash, cash equivalents and restricted cash at beginning of period 2,519 13,580
Cash, cash equivalents and restricted cash at end of period 5,769 7,371
Supplemental disclosure of cash flow information:    
Cash received from interest 75
Right-of-use asset and lease liability 20 121
Issuance expenses $ 160