Property, Equipment and Improvements, Net (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2024

Dec. 31, 2023

Property, Plant and Equipment [Abstract]

Summary of Property Equipment and Improvements Net

Property, equipment and improvements, net is comprised of the following (in thousands):

	March 31, 2024			December 31, 2023
Laboratory equipment	$	4,548		$	4,510
Furniture and office equipment		244			244
Computer equipment		165			161
Construction in progress		—			38
Leasehold improvements		25			25
		4,982			4,978
Less: accumulated depreciation		(2,118	)		(1,856	)
Property and equipment, net	$	2,864		$	3,122

Property, equipment and improvements, net is comprised of the following (in thousands):

	December 31,
	2023			2022
Laboratory equipment	$	4,510		$	4,018
Furniture and office equipment		244			244
Computer equipment		161			149
Construction in progress		38			49
Leasehold improvements		25			25
		4,978			4,485
Less: accumulated depreciation		(1,856	)		(877	)
Property and equipment, net	$	3,122		$	3,608

Summary of Depreciation Expenses

Depreciation expense was $0.3 million and $0.2 million during the three months ended March 31, 2024 and 2023 and was recorded as follows (in thousands):

	Three Months Ended March 31,
	2024		2023
General and administrative	$	4	$	4
Research and development		258		226
	$	262	$	230

These amounts are exclusive of amortization related to finance lease assets of $0.1 million during the three months ended March 31, 2024 and 2023.

Depreciation expense was $1.0 million and $0.6 million and was recorded as follows (in thousands):

	Year Ended December 31,
	2023		2022
General and administrative	$	17	$	12
Research and development		973		635
	$ 990		$ 647