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Accrued Expenses and Other Current Liabilities (Tables)
12 Months Ended
Dec. 31, 2021
Payables And Accruals [Abstract]  
Summary of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

 

 

 

December 31,
2021

 

 

December 31,
2020

 

External research and development services

 

$

1,575

 

 

$

896

 

Payroll and payroll-related costs

 

 

1,182

 

 

 

922

 

Professional fees

 

 

388

 

 

 

135

 

Other

 

 

60

 

 

 

243

 

 

 

$

3,205

 

 

$

2,196