Supplemental Balance Sheet Information (Tables)

3 Months Ended

Mar. 31, 2021

Supplemental Balance Sheet Information [Abstract]

Prepaid Expense and Other Current Assets

Prepaid expenses and other current assets

	March 31, 2021		December 31, 2020
Prepaid clinical, contract research and manufacturing costs	$	4,548	$	2,336
Interest receivable	224		161
Prepaid insurance	472		694
Other	1,307		1,040
Prepaid expenses and other current assets	$	6,551	$	4,231

Property and Equipment, Net

Property and equipment, net

	March 31, 2021		December 31, 2020
Scientific equipment	$	5,760	$	5,476
Leasehold improvements	—		192
Computers and software	52		46
Furniture and fixtures	30		30
Construction in process	61		119
Property and equipment, gross	5,903		5,863
Less: accumulated depreciation	(1,811)		(1,740)
Property and equipment, net	$	4,092	$	4,123

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities

	March 31, 2021		December 31, 2020
Accrued clinical, contract research and manufacturing costs	$	697	$	1,372
Accrued payroll-related expenses	662		1,158
Lease liability, current	327		223
Accrued other expenses	755		772
Accrued expenses and other current liabilities	$	2,441	$	3,525