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Business combinations - Additional Information (Detail) | 12 Months Ended |
--- | --- | ---
Jun. 30, 2018 AUD ($) Milestone | Oct. 31, 2016 AUD ($)
Disclosure of detailed information about business combination [line items] |  |
Milestone payment discount rate | 35.00% |
Glioblast Pty Ltd [member] |  |
Disclosure of detailed information about business combination [line items] |  |
Percentage acquired of the issued shares |  | 100.00%
Acquisition-related costs | $ 345,000 |
Goodwill arising from business combination | 0 | $ 0
Revenue of acquiree from the date of acquisition | 0 |
Profit of acquiree from the date of acquisition | 0 |
Group's revenue had the acquisition occurred on 1 July 2016 | $ 0 |
Number of contingent milestone payments | Milestone | 4 |
Genentech agreement [member] |  |
Disclosure of detailed information about business combination [line items] |  |
Number of contingent milestone payments | Milestone | 1 |

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- Definition The amount of acquisition-related costs recognised as an expense for transactions that are recognised separately from the acquisition of assets and the assumption of liabilities in business combinations. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2017-01-01 -Paragraph B64 -Subparagraph m -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2017-03-01&anchor=para_B64_m&doctype=Appendix&seq=2 -URIDate 2017-03-09 + Details
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- Definition The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2017-01-01 -Paragraph B67 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2017-03-01&anchor=para_B67_d&doctype=Appendix&seq=2 -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2017-01-01 -Paragraph 134 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2017-03-01&anchor=para_134_a&doctype=Standard -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2017-01-01 -Paragraph 135 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2017-03-01&anchor=para_135_a&doctype=Standard -URIDate 2017-03-09 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_c&doctype=Standard -URIDate 2017-03-09 + Details
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