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Related Party Transactions - Additional Information (Details) - USD ($)
 1 Months Ended 12 Months Ended
Feb. 12, 2024
Jun. 30, 2025
Nov. 30, 2024
Jun. 30, 2024
Jan. 31, 2023
Dec. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Related Party Transaction [Line Items]                
Due to related parties           $ 15,435,053 $ 13,422,407  
Number of shares options, granted           121,653    
Principal balance of note           $ 5,000,000    
Related Party                
Related Party Transaction [Line Items]                
Due to related parties           $ 15,400,000    
Agenus Inc                
Related Party Transaction [Line Items]                
Period of license agreement           3 years    
Terminate license agreement period           90 days    
Period for breach of payment obligations           45 days    
Related party transaction, description           The Company may terminate the New Assignment and License Agreement without cause upon 90 days’ prior written notice to Agenus. Either party may terminate if they believe there has been a material breach which has not been cured within 90 days (or 45 days for breach of payment obligations) of receiving such notice.    
Intercompany allocation included in expense           $ 900,000 1,100,000  
Qualified financing terms In the event of a qualified financing event, as defined in the Note, the outstanding principal amount of the Note plus accrued and unpaid interest shall, at Agenus’ election, either be paid in full or converted into equity shares equal to the quotient obtained by dividing (i) the amount due on the date of conversion by (ii) 80% of the per share price of the equity securities sold in the qualified financing. Upon a change of control, the Company will pay Agenus an amount equal to (i) 1.5 times the principal then outstanding under the Note and (ii) the amount of accrued interest then outstanding immediately prior to the closing of such change of control.              
Percentage of per share price of equity securities sold in qualified financing 80.00%              
Agenus Inc | Purchase Agreement | Convertible Promissory Note                
Related Party Transaction [Line Items]                
Convertible debt issued, principal amount $ 5,000,000              
Convertible debt, annual interest rate 2.00%              
Convertible debt, effective interest rate           15.00%    
Convertible debt, interest rate terms Interest shall accrue and not be payable until converted or paid in connection with the repayment in full of the principal amount of the Note. The Note provides that the Company will pay Agenus on demand the principal amount outstanding, together with any unpaid interest, on or after January 1, 2026.              
Convertible debt outstanding amount               $ 5,000,000
Principal balance of note           $ 5,000,000    
Accrued and unpaid interest balance           $ 79,444    
Agenus Inc | New Intercompany Service Agreement                
Related Party Transaction [Line Items]                
Percentage of service cost           10.00%    
Service agreement notice period           60 days    
Agenus Inc | Individual Services                
Related Party Transaction [Line Items]                
Service agreement notice period           30 days    
Agenus Inc | Business Services and Occupancy Costs                
Related Party Transaction [Line Items]                
Percentage of service cost           105.00%    
Agenus Inc | Research Services                
Related Party Transaction [Line Items]                
Percentage of service cost           110.00%    
Wolf, Greenfield & Sachs, P.C.                
Related Party Transaction [Line Items]                
Legal services fee           $ 300,000 $ 168,000  
Dr. Buell                
Related Party Transaction [Line Items]                
Compensation paid         $ 150,000      
Additional compensation received           $ 0    
Dr. Buell | Stock Options                
Related Party Transaction [Line Items]                
Number of shares options, granted   6,750 300,000 37,500