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Stockholder's Equity - Additional Information (Details) - USD ($)				9 Months Ended
	Aug. 04, 2023	May 17, 2023	Mar. 30, 2021	Sep. 30, 2023	Sep. 30, 2022	Jan. 01, 2023	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares reserved for issuance				3,264,419
Weighted-average fair value of the stock options granted				$ 2.25
Total unrecognized stock-based compensation balance for unvested options				$ 13,400,000
Total unrecognized stock-based compensation balance for unvested options expected to be recognized period				2 years 3 months 18 days
Aggregate intrinsic value of options exercised				$ 59,300	$ 1,200,000
Preferred stock, shares issued				0			0
Shares of common stock				44,104,672			36,257,493
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percenatage of originally issued series A preferred stock				30.00%
Series A Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Redemption value of outstanding preferred stock				$ 18,000,000
Preferred stock, redemption price per share				$ 4.33
Common stock beneficial ownership, percentage	9.99%
Pionyr Immunotherapeutics, Inc
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock	1,800,652
Percentage of acquired of outstanding equity	100.00%
Pionyr Immunotherapeutics, Inc | Nonvoting Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock	153,121
Pionyr Immunotherapeutics, Inc | Series A Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Preferred stock, shares issued	4,153,439
Common Stock | Pionyr Immunotherapeutics, Inc
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock issuable upon the conversion	4,153,439
Common Stock | URO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Company issued and sold shares of common stock		6,110,000
Public offering price		$ 6.55
Net proceeds received after deducting commissions and other offering expenses		$ 37,400,000
2021 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares reserved for issuance						1,450,299
2021 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Plan effective date			Mar. 30, 2021
Increase in number of shares reserved and available for issuance as percentage on common stock outstanding				1.00%
Number of shares purchased by employees				0
2021 Employee Stock Purchase Plan | Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares issued for purchase				346,613

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