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Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2021
Payables and Accruals [Abstract]  
Schedule of accrued expenses Accrued expenses consisted of the following (amounts in thousands):
December 31,
20212020
Research and development contract costs$10,253 $5,382 
Compensation and related benefits3,320 1,551 
Other1,001 419 
Total accrued expenses$14,574 $7,352