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Prepaid Expenses and Other Current Assets (Tables)
12 Months Ended
Dec. 31, 2022
Prepaid Expenses And Other Current Assets [Abstract]  
Schedule of prepaid expenses and other current assets

The following is a summary of prepaid expenses and other current assets at December 31, 2021 and 2022 (in thousands):

 

December 31, 

December 31, 

    

2022

    

2021

Research and development tax credit receivable

$

4,664

$

3,727

Prepayments and VAT receivable

976

 

577

Other current assets

 

426

79

$

6,066

$

4,383