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Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2023
Payables and Accruals [Abstract]  
Schedule of accrued expenses
Accrued expenses consisted of the following (amounts in thousands):
December 31,
20232022
Research and development contract costs$4,235 $11,256 
Compensation and related benefits3,794 3,967 
Lease liabilities796 701 
Litigation settlement— 1,400 
Other current liabilities1,041 471 
Total accrued expenses and other current liabilities$9,866 $17,795