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Supplemental Balance Sheet Information - Schedule of Accrued Other Liabilities (Detail) - USD ($) $ in Thousands | Mar. 31, 2023 | Sep. 30, 2022
--- | --- | ---
Accrued Liabilities Current [Abstract] |  |
Accrued professional fees | $ 413 | $ 279
Accrued clinical study expense | 1,896 | 1,425
Accrued purchases | 1,297 | 1,655
Acquisition of in-process research and development | 967 | 981
Income tax payable | 36 |
Restructuring | 308 |
Operating lease liability, current portion | 1,044 | 963
Other | 502 | 551
Total accrued other liabilities | $ 6,463 | $ 5,854

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