Balance Sheet Detail (Tables)

3 Months Ended

Mar. 31, 2021

Balance Sheet Detail

Schedule of property and equipment

	March 31,		December 31,
	2021		2020
Research and development equipment	$	158	$	158
Office equipment		60		60
Total property and equipment		218		218
Less accumulated depreciation		(75)		(63)
Property and equipment, net	$	143	$	155

Schedule of accrued liabilities

	March 31,		December 31,
	2021		2020
External research and development expenses	$	71	$	218
Payroll related		22		277
Professional services		291		561
Other		68		40
Total	$	452	$	1,096