Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2022

Balance Sheet Components [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):

	December 31,
	2022		2021
Prepaid expenses	$	223	$	333
Prepaid insurance		977		1,144
Prepaid research and development expenses		1,088		1,899
Australia research and development refundable tax credit		1,003		1,128
Other current assets		276		367
Total prepaid expenses and other current assets	$	3,567	$	4,871

Schedule of Property and Equipment, Net

Property and equipment, net consisted of the following (in thousands):

	December 31,
	2022			2021
Computer equipment	$	18		$	53
Lab equipment		415			528
Finance lease right of use assets		124			557
Leasehold improvement		21			58
Office furniture		—			26
Less: accumulated amortization and depreciation		(185	)		(959	)
Property and equipment, net	$	393		$	263

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expense and other current liabilities consisted of the following (in thousands):

	December 31,
	2022		2021
Personnel expenses	$	1,130	$	820
Professional fees		234		462
Research and development expenses		497		7,108
Current portion of operating lease liabilities		377		741
Current portion of finance lease liability		76		—
Other		185		180
Total accrued expenses and other current liabilities	$	2,499	$	9,311

Summary of Accrued Severance and Related Expens

The Company recognized the severance and related expenses over the requisite employment obligation period.

	For the year ended December 31,
	2022
Beginning accrued severance	$	—
Incurred during the period		3,942
Severance paid during the period		(3,942	)
Ending accrued severance	$	—