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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Revenue:            
Total revenues         $ 183 $ 122
Operating expenses:            
Research and development $ 243 $ 642 $ 881 $ 2,469 2,983 4,266
General and administrative 1,093 1,472 5,674 4,864 7,121 7,602
Total operating expenses 1,336 2,114 6,555 7,333 10,104 11,868
Loss from operations (1,336) (1,931) (6,555) (7,150) (9,921) (11,746)
Other (expense) income:            
Other income 200 3,556 3,556
Change in fair value of forward purchase agreement asset (23) (339)
Change in fair value of SEPA put rights asset 230 55 (312)
Change in fair value of embedded derivative liability (150) (773) (11)
Gain on extinguishment of accrued liabilities         173
Loss on settlement of convertible notes (214) (358)    
Interest income 6 2 30 3 9 63
Interest expense (193) (164) (1,104) (306) (387) (23)
Total other (expense) income, net (321) (162) (1,973) 3,253 2,689 40
Net loss $ (1,657) $ (2,093) $ (8,528) $ (3,897) (7,232) (11,706)
Deemed dividend resulting from the warrant down round         (10,177)
Net loss attributable to common stockholders         $ (17,409) $ (11,706)
Loss per share            
Net loss per share, basic (in Dollars per share) $ (0.63) $ (3.27) $ (4.12) $ (6.09) $ (22.31) $ (18.35)
Net loss per share, diluted (in Dollars per share) $ (0.63) $ (3.27) $ (4.12) $ (6.09) $ (22.31) $ (18.35)
Weighted averages shares outstanding            
Weighted average shares outstanding - basic (in Shares) 2,613,889 640,606 2,069,965 639,996 780,332 637,777
Weighted average shares outstanding - diluted (in Shares) 2,613,889 640,606 2,069,965 639,996 780,332 637,777
Research and development services            
Revenue:            
Total revenues $ 183 $ 183 $ 183
Collaboration revenue            
Revenue:            
Total revenues         99
Royalty            
Revenue:            
Total revenues         $ 23