Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Commitments and Contingencies (Textual)
Manufacturing and clinical study management related cost	$ 14,880,000
Deposits related to study initiation	3,269,000
Rent expense	$ 41,400	$ 40,000
Head Office [Member]
Commitments and Contingencies (Textual)
Lease rent for office space term	1 year
Lease rent for office space	$ 2,400
Administrative Offices [Member]
Commitments and Contingencies (Textual)
Lease rent for office space	3,400
CAD [Member] | Administrative Offices [Member]
Commitments and Contingencies (Textual)
Lease rent for office space	$ 4,400