Balance Sheet Details - Accrued Liabilities (Detail) - USD ($) $ in Thousands		Jun. 30, 2024	Jun. 30, 2023
Accrued Liabilities [Line Items]
Accrued pre-clinical and clinical trial expenses		$ 1,407	$ 3,663
Accrued compensation and benefits	[1]	2,821	7,189
Accrued legal and professional services expenses		33	1,423
Accrued reimbursement to KKC		892	0
Other		34	186
Total accrued liabilities		$ 5,187	$ 12,461

[1] Includes one-time employee benefits of approximately $21,000 and $1.0 million for the fiscal years ended June 30, 2024 and 2023, respectively.