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Basis of Presentation and Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]  
Useful Life of Property and Equipment The estimated useful lives of the major classes of property and equipment are as follows:
Estimated Useful Lives
Furniture and office equipment
3 to 5 years
Leasehold improvements
4 to 6 years
Laboratory equipment5 years
Property and equipment consisted of the following:
 As of December 31,
(in thousands)20232022
Furniture and office equipment$1,067 $1,066 
Leasehold improvements2,568 2,560 
Laboratory equipment1,355 1,056 
Property and equipment, gross4,990 4,682 
Less—accumulated depreciation(3,752)(3,413)
Property and equipment, net$1,238 $1,269 
Schedule of Antidilutive Securities Excluded from the Calculation of Basic and Diluted Loss Per Share Shares used in calculating diluted net loss per common share exclude as anti-dilutive the following share equivalents:
 December 31,
 20232022
Options to purchase Common Stock6,650,954 5,069,458 
Warrants to purchase Common Stock2,807,948 4,360,968 
Series A Convertible Preferred Stock877 877 
 9,459,779 9,431,303