Balance Sheet Components (Tables)

6 Months Ended

Jun. 30, 2022

Balance Sheet Components [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

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

	June 30,		December 31,
	2022		2021
Prepaid expenses	$	434	$	333
Prepaid insurance		691		1,144
Prepaid research and development expenses		1,131		1,899
Australia research and development refundable tax credit		2,063		1,128
Other current assets		387		367
Total prepaid expenses and other current assets	$	4,706	$	4,871

Schedule of Property and Equipment, Net

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

	June 30,			December 31,
	2022			2021
Computer equipment	$	18		$	53
Lab equipment		342			528
Finance lease right of use assets		124			557
Leasehold improvement		63			58
Office furniture		—			26
Less: accumulated amortization and depreciation		(183	)		(959	)
Property and equipment, net	$	364		$	263

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consist of the following (in thousands):

	June 30,		December 31,
	2022		2021
Personnel expenses	$	625	$	820
Severance expense		673		—
Professional fees		351		462
Research and development expenses		1,861		7,108
Current portion of operating lease liabilities		317		741
Current portion of finance lease liability		74		—
Other		182		180
Total accrued expenses and other current liabilities	$	4,083	$	9,311

Summary of Accrued Severance [Table Text Block]

	June 30,
	2022
Beginning accrued severance	$	—
Incurred during the period		3,625
Severance paid during the period		(2,952	)
Ending accrued severance	$	673