XML 57 R48.htm IDEA: XBRL DOCUMENT
v3.25.3

Subscription Agreement - Schedule of Activity for the Related Party Subscription Agreement Liability (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2025 | Sep. 30, 2024
Schedule of Activity for the Related Party Subscription Agreement Liability [Abstract] |  |  |  |  |
Balance at beginning |  | $ 804,000 | $ 4,123,000 | $ 4,123,000 |
Change in fair value |  | 191,038 | (3,319,000) |  |
Settlement |  | (995,038) |  | 995,038 |
Balance at ending |  |  | $ 804,000 |  |

X
- Definition Change in fair value of subscription agreement liability. + References No definition available. + Details
Name: | onco_ChangeInFairValueOfSubscriptionsAgreementLiability
Namespace Prefix: | onco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | onco_ScheduleOfActivityForTheRelatedPartySubscriptionAgreementLiabilityAbstract
Namespace Prefix: | onco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Settlement of subscription agreement liability. + References No definition available. + Details
Name: | onco_SettlementOfSubscriptionAgreementLiability
Namespace Prefix: | onco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount of subscription agreement liability to the related party. + References No definition available. + Details
Name: | onco_SubscriptionAgreementLiabilityRelatedPartyCurrent
Namespace Prefix: | onco_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant