Commitments and Contingencies - Additional Information (Details)	6 Months Ended
Jun. 30, 2026 USD ($) Action	Jul. 31, 2025 USD ($)
Loss Contingencies [Line Items]
Number of actions filed \| Action	2
Legal proceedings allegations	The Complaints allege that the defendants filed or caused to be filed a materially incomplete and misleading registration statement with the SEC and asserts claims under New York common law for negligent misrepresentation and concealment and negligence. In addition, the Company and its board of directors have received five additional demands from purported stockholders seeking additional disclosures in the registration statement (collectively, the “Demands”).
Smith v. Ikena Oncology, Inc.
Loss Contingencies [Line Items]
Lawsuit filing date	Jun. 12, 2025
Kent v. Ikena Oncology, Inc.
Loss Contingencies [Line Items]
Lawsuit filing date	Jun. 13, 2025
Hutchmed Agreement \| Maximum
Loss Contingencies [Line Items]
License agreement milestone payment per licensed product upon achievement of development and regulatory milestones		$ 92,500,000
Milestone payment per licensed compound upon achievement of worldwide aggregate cumulative net sales milestones		$ 135,000,000
Indemnification Agreements
Loss Contingencies [Line Items]
Accrued liabilities of claims	$ 0

The amount due upon achievement of sales milestones for each licensed compound under a licensing agreement.

No definition available.

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The amount due upon achievement of development and regulatory milestones for each licensed product under a licensing agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of loss contingency liability.

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Presents an assertion of a fact by a plaintiff in a pleading or complaint, which the plaintiff claims it will prove upon presentation of evidence at the proceeding.

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Date complaint was formally filed in court of law, arbitration, or mediation, in YYYY-MM-DD format.

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The total number of new claims filed pertaining to a loss contingency during the period.

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