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Significant accounting policies - Additional Information (Detail) - AUD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Apr. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Disclosure of summary of significant accounting policies [line items] |  |  |  |  |
Consolidated loss after income tax |  | $ 8,421,960 | $ 12,467,466 | $ 10,270,000 |
Net current asset position |  | 21,064,264 | 5,586,128 |  |
Net cash outflows from operating activities |  | 9,111,000 | 8,810,000 | 6,714,000 |
Consolidated cash in hand and at bank |  | 27,586,760 | $ 8,764,044 | $ 5,434,000 | $ 5,956,000
Clinical Trials [Member] | Covid Ninteen [Member] |  |  |  |  |
Disclosure of summary of significant accounting policies [line items] |  |  |  |  |
Proceeds from funding for project purpose | $ 9,000,000 | $ 25,000,000 |  |  |
Research and development tax incentive program [member] |  |  |  |  |
Disclosure of summary of significant accounting policies [line items] |  |  |  |  |
Additional tax deduction percentage |  | 43.50% |  |  |
Top of range [member] | Research and development tax incentive program [member] |  |  |  |  |
Disclosure of summary of significant accounting policies [line items] |  |  |  |  |
Earning income |  | $ 20,000,000 |  |  |
Licensing agreement for paxalisib [member] |  |  |  |  |
Disclosure of summary of significant accounting policies [line items] |  |  |  |  |
Remaining useful life,licensing agreement |  | 15 years |  |  |
Licensing agreement for EVT801 [member] |  |  |  |  |
Disclosure of summary of significant accounting policies [line items] |  |  |  |  |
Remaining useful life,licensing agreement |  | 12.5 years |  |  |

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