Supplemental Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2023

Supplemental Balance Sheet Information [Abstract]

Schedule of Prepaid and Other Current Assets

Prepaid expenses and other current assets


			December 31,
			2023						2022
Prepaid clinical, contract research and manufacturing costs			$	—					$	213
Prepaid insurance			508						408
Prepaid franchise tax			259						223
Lease costs			235						111
Other			191						519
Prepaid expenses and other current assets			$	1,193					$	1,474

Schedule of Other Noncurrent Assets

Other noncurrent assets


			December 31,
			2023						2022
Restricted cash			$	1,200					$	1,200
Prepaid insurance, noncurrent			1,785						2,252
Other			—						38
Other noncurrent assets			$	2,985					$	3,490

Schedule of Property, Plant and Equipment, Net

Property and equipment, net


			December 31,
			2023						2022
Scientific equipment			$	246					$	6,087

Computers and software			3						63
Furniture and fixtures			30						30
Property and equipment, gross			279						6,180
Less: accumulated depreciation			(225)						(3,650)
Property and equipment, net			$	54					$	2,530

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities


			December 31,
			2023						2022
Accrued clinical, contract research and manufacturing costs			$	—					$	48
Accrued restructuring costs			—						48
Lease liability, current			626						539
Accrued payroll-related expenses			71						32
Accrued other expenses			182						611
Accrued expenses and other current liabilities			$	879					$	1,278