Balance Sheet Components

12 Months Ended

Dec. 31, 2023

Property, Plant and Equipment [Abstract]

5. Balance Sheet Components

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets as of December 31, 2023 and 2022 consisted of the following (in thousands):


	December 31, 2023		December 31, 2022
Advances to suppliers		—	$	2,486
Prepaid insurance		780		1,343
Other prepaid expenses		1,380		3,307
Total prepaid expenses and other current assets	$	2,160	$	7,136

Property and Equipment, Net

Property and equipment, net as of December 31, 2023 and 2022 consisted of the following (in thousands):


	December 31, 2023		December 31, 2022
Furniture and fixtures	$	—	$	321
Computers and network equipment		—		251
Lab equipment		—		12,521
Leasehold improvements		—		304
Construction-in-progress		—		12,440
Total property and equipment		—		25,837
Less: accumulated depreciation		—		(3,207	)
Total property and equipment, net	$	—	$	22,630

Depreciation expense was $2.4 million for each of the years ended December 31, 2023 and 2022.

As a result of the modification of our leases (see Note 8), we disposed of leasehold improvements, computer equipment, lab and office equipment, and furniture and fixtures and recorded a $0.1 million loss within Loss on disposal of assets and $11.3 million within Restructuring and impairment costs on the statement of operations and comprehensive loss during the year ended December 31, 2023.

Accrued Expenses

Accrued expenses as of December 31, 2023 and 2022 consisted of the following (in thousands):


	December 31, 2023		December 31, 2022
Professional fees	$	1,029	$	367
Early exercise liability		21		150
Other accrued expenses		143		1,354
Accrued employee termination benefits		1,535		—
Total accrued expenses and other current liabilities	$	2,728	$	1,871