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Supplemental Balance Sheet Information (Tables)

6 Months Ended

Jun. 30, 2023

Supplemental Balance Sheet Information [Abstract]

Schedule of Prepaid and Other Current Assets

Prepaid expenses and other current assets

			June 30, 2023						December 31, 2022
Prepaid clinical, contract research and manufacturing costs			$	—					$	213
Prepaid insurance			628						408
Other			701						853
Prepaid expenses and other current assets			$	1,329					$	1,474

Schedule of Other Noncurrent Assets

Other noncurrent assets

			June 30, 2023 (Restated)						December 31, 2022
Restricted cash			$	1,200					$	1,200
Prepaid insurance			1,999						2,252
Other			3						38
Other noncurrent assets			$	3,202					$	3,490

Schedule of Property and Equipment, Net

Property and equipment, net

			June 30, 2023						December 31, 2022
Scientific equipment			$	5,265					$	6,087
Computers and software			63						63
Furniture and fixtures			30						30
Property and equipment, gross			5,358						6,180
Less: accumulated depreciation and amortization			(3,562)						(3,650)
Property and equipment, net			$	1,796					$	2,530

Schedule of Accrued Liabilities

Accrued expenses and other current liabilities

			June 30, 2023						December 31, 2022
Accrued clinical, contract research and manufacturing costs			$	—					$	48
Accrued restructuring costs			—						48
Lease liability			580						539
Accrued payroll-related expenses			16						32
Accrued federal and state tax payable			—						209
Accrued other expenses			492						402
Accrued expenses and other current liabilities			$	1,088					$	1,278

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- Definition

Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs.

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- Definition

Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 10
-Topic 360
-Publisher FASB
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
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