Accrued Expenses (Tables)

12 Months Ended

Apr. 30, 2022

Payables and Accruals [Abstract]

Schedule of Accrued Expenses

At April 30, 2022 and 2021, accrued expenses consisted of (in thousands):

	2022		2021
Accrued research expense	$	2,011	$	2,476
Accrued compensation		4,168		3,507
Accrued professional fees		474		557
Other accrued expenses		308		390
Total accrued expenses	$	6,961	$	6,930