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License Revenues - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended
	Sep. 12, 2024	Mar. 31, 2026	Mar. 31, 2025	Jun. 30, 2022	Dec. 31, 2025	Oct. 01, 2024	Sep. 11, 2023	Oct. 31, 2021	Sep. 30, 2020
Related Party Transaction [Line Items]
Common stock, Shares issued		54,582,749			43,223,090		11,021,248
Reverse stock split		Immediately prior to the effective time of the Reverse Merger, the Company effected a 1-for-16 reverse stock split of its common stock (the “Reverse Stock Split”). Unless noted otherwise, all references herein to share and per share amounts reflect the Reverse Stock Split.
Accounts receivable		$ 1,230,000			$ 52,000
Deferred revenue current		1,485,000			1,188,000
Deferred revenue noncurrent		6,322,000			5,770,000
Zenas BioPharma Inc [Member]
Related Party Transaction [Line Items]
Reimbursement of development costs				$ 1,100,000
Common stock, Shares issued									156,848
Zenas BioPharma Inc [Member] \| IPO [Member]
Related Party Transaction [Line Items]
Price per share	$ 17
Reverse stock split	1-for-8.6831
Fair value of the investment		400,000			700,000
Zenas BioPharma Inc [Member] \| Milestone [Member]
Related Party Transaction [Line Items]
Development milestones				11,000,000
Zenas BioPharma Inc [Member] \| Royalty [Member]
Related Party Transaction [Line Items]
License revenue - related party		0
Zenas BioPharma Inc [Member] \| Upfront Payment [Member]
Related Party Transaction [Line Items]
Upfront payments				$ 1,000,000				$ 1,000,000
Tenacia Biotechnology (Hong Kong) Co., Limited [Member]
Related Party Transaction [Line Items]
License revenue - related party		500,000	$ 1,200,000
Accounts receivable		1,200,000			52,000
Unbilled receivable		83,000			50,000
Deferred revenue current		1,500,000			1,200,000
Deferred revenue noncurrent		6,300,000			$ 5,800,000
Tenacia Biotechnology (Hong Kong) Co., Limited [Member] \| Milestone [Member]
Related Party Transaction [Line Items]
Development milestones		15,000,000				$ 15,000,000
Revenue related to milestones		$ 7,000,000
Collaborative Arrangement, Revenue Not from Contract with Customer, Statement of Income or Comprehensive Income [Extensible Enumeration]		License revenue - related party
Tenacia Biotechnology (Hong Kong) Co., Limited [Member] \| Upfront Payment [Member]
Related Party Transaction [Line Items]
Upfront payments						$ 2,500,000