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Leases
 12 Months Ended
Dec. 31, 2023
Leases [Abstract]  
Leases Leases
In January 2017, the Company entered into a lease for approximately 2,500 square feet of office space in Westport, Connecticut, (the “Westport Lease”), which was subsequently extended and increased to approximately 4,000 square feet. In June 2023, the Westport Lease was terminated.
In July 2023, the Company signed a 5.5-year lease for approximately 2,700 square feet of office space in Shelton, Connecticut, (the “Shelton Lease”). The Company has a one-time option to cancel the Shelton Lease after 36 months if it provides written notice before the end of month 30. A payment of approximately $47,000 would be due at the end of month 36 if the Company exercises this option. This option is not reasonably certain to occur.
Rent expense for the years ended December 31, 2023 and 2022 was $63,000 and $120,000, respectively. Cash paid for operating leases for the years ended December 31, 2023 and 2022 was approximately $49,000 and $192,000, respectively, all of which pertained to the Shelton Lease. Cash paid for the Westport Lease will commence in 2024.
The following table summarizes the balance sheet classification of the operating lease asset and related lease liabilities as of December 31, 2023 for the Shelton Lease and as of December 31, 2022 for the Westport Lease (in thousands):
December 31,
2023		December 31,
2022
Right-of-use asset, net$147 $139 
Lease liability, current portion20 143 
Lease liability, net of current portion138 — 
$158 $143 
The following variables were used to determine the right-of-use asset and the operating lease liabilities at December 31, 2022 and 2021:
December 31,
2023		December 31,
2022
Weighted average remaining lease term5.2 years0.75 years
Weighted average operating lease discount rate6.4 %3.9 %
Future minimum lease payments under the lease agreement as of December 31, 2023 were as follows (in thousands):
Year ended
2024$29 
202536 
202637 
202739 
2028 and thereafter46 
Total lease payments$187 
Less: Amounts representing interest(29)
Present value of lease liabilities$158