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Accrued Expenses
12 Months Ended
Dec. 31, 2021
Accrued Expenses  
Accrued Expenses

5. Accrued Expenses

Accrued expenses consist of the following as of December 31, 2021 and 2020 (in thousands):

    

December 31, 

    

December 31, 

2021

2020

External research and development

$

2,794

$

11,060

Personnel-related

 

5,145

 

2,013

Professional and consulting fees

 

491

 

481

Other

321

178

Total accrued expenses

$

8,751

$

13,732