Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2021

The components of the Company’s lease expense, which are recorded as a component of research and development expenses and general and administrative expenses in the condensed consolidated statement of operations and comprehensive loss are as follows (in thousands):


	March 31,			March 31,
	2021			2020
Operating lease cost	$	232		$	223
Variable lease cost		80			139
Total lease cost	$	312		$	362
Weighted‑average remaining operating lease term (years)		5.0			2.4
Weighted‑average discount rate		7.93	%		8.56	%

Schedule of maturities of operating leases

The following table summarizes the maturities of the Company’s operating leases as of March 31, 2021, including the payments for the U.K. lease renewal which is reasonably certain of being extended (in thousands):


Year Ending December 31,
2021	$	713
2022		1,104
2023		662
2024		662
2025		662
2026		662
Present value adjustment		(732)
Total lease liabilities		3,733
Less: current lease liabilities		(708)
Long term lease liabilities	$	3,025