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ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
 9 Months Ended
Sep. 30, 2020
Payables and Accruals [Abstract]  
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
Accrued expenses and other current liabilities consisted of the following:

September 30,
2020

December 31,
2019
Contracted research services$1,088 $434 
Payroll and related expenses2,733 1,182 
Professional and consulting fees3,141 984 
Legal fees320 299 
Current portion of operating lease liability937 — 
Total accrued expenses and other current liabilities$8,219 $2,899