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Balance Sheet Accounts and Supplemental Disclosures
 3 Months Ended
Mar. 31, 2022
Balance Sheets Accounts And Supplemental Disclosures [Abstract]  
Balance Sheet Accounts and Supplemental Disclosures Balance Sheet Accounts and Supplemental Disclosures
Property and Equipment
Property and equipment, net consisted of the following (in thousands):
Estimated
Useful Life
(in years)		March 31,
2022		December 31,
2021
Office equipment
3-7
$1,097 $1,097 
Computer equipment5123 123 
Software3130 130 
Lab equipment
2-5
5,718 5,688 
Leasehold improvements
6-7
2,561 2,562 
Construction in processN/A127 — 
Total property and equipment9,756 9,600 
Less: accumulated depreciation4,731 4,280 
Property and equipment, net$5,025 $5,320 
Depreciation expense for the quarters ended March 31, 2022 and 2021 was approximately $0.5 million and $0.4 million, respectively, and was recorded in general and administrative expense and research and development expense, respectively, on the consolidated statements of operations.

Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following (in thousands):
As of
March 31,
2022		December 31,
2021
Accrued compensation and benefits$6,114 $11,916 
Operating lease liabilities2,761 2,902 
Accrued consulting fees956 956 
Accrued interest3,566 1,066 
Accrued legal fees320 202 
Accrued litigation liability2,375 2,375 
Accrued accounting fees232 154 
Accrued other694 839 
Total accrued expenses$17,018 $20,410