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Accrued and Other Current Liabilities
12 Months Ended
Dec. 31, 2022
Accrued and Other Current Liabilities [Abstract]  
Accrued and Other Current Liabilities

9.    Accrued and Other Current Liabilities

Accrued and other current liabilities consisted of the following at December 31, 2021 and 2022 (in thousands):

 

December 31, 

December 31, 

    

2022

    

2021

As restated (see Note 1)

As restated (see Note 1)

Accrued research and development

$

3,611

$

2,310

Accrued legal and professional fees

 

333

 

233

Other current liabilities

 

1,006

 

753

$

4,950

$

3,296

Other current liabilities include accrued payroll costs of approximately $680,000 and $495,000 for the years ended December 31, 2022 and 2021 respectively.