Leases (Tables)

12 Months Ended

Apr. 30, 2022

Leases [Abstract]

Summary of Lease Costs

The following table summarizes lease costs included in research and development and general and administrative expense for the years ended April 30, 2022 and 2021 (in thousands):

	2022		2021
Operating lease costs	$	1,743	$	926
Short-term lease costs		14		13
Variable lease costs		169		149
Total lease costs	$	1,926	$	1,088

Summary of Maturity of Undiscounted Payments and Future Minimum Payments Due Under Lease Liabilities and Present Value of Liabilities

The following table summarizes the undiscounted payments due under lease liabilities and the present value of those liabilities as of April 30, 2022 (in thousands):

Years ending April 30,	Operating Leases
2023	$	1,624
2024		1,504
2025		1,541
2026		1,578
2027		1,617
Thereafter		3,091
Total lease payments		10,955
Less: imputed interest		2,767
Total lease liabilities		8,188
Current lease liabilities		977
Long-term lease liabilities	$	7,211

Summary of Lease Term and Discount Rate

The following table summarizes the lease term and discount rate as of April 30, 2022 and 2021:

	2022			2021
Weighted-average remaining lease term (years)		6.9			6.8
Weighted-average discount rate		9.0	%		9.0	%

Summary of Cash Paid for Amounts Included in Measurement of Lease Liabilities

The following table summarizes the cash paid for amounts included in the measurement of lease liabilities for the years ended April 30, 2022 and 2021 (in thousands):

	2022		2021
Cash paid for amounts included in the measurement of operating lease liabilities	$	1,287	$	696