v3.26.1
Segments - Schedule of CODM expense categories (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]          
License and service revenue:     $ 0 $ 6,359 $ 0
Operating Expenses [Abstract]          
Clinical and manufacturing $ 1,659 $ 510 3,056 3,577 8,598
General and administrative 2,136 712 3,382 5,250 8,690
Total operating expenses 3,795 1,222 6,438 8,827 17,288
Loss from operations (3,795) (1,222) (6,438) (2,468) (17,288)
Total other expense (income), net 41 (487) 443 (675) 234
Net loss (3,754) (1,709) (5,995) (3,143) (17,054)
Segments Member          
Segment Reporting Information [Line Items]          
License and service revenue:     0 6,359 0
Operating Expenses [Abstract]          
Clinical and manufacturing 672 38 718 1,193 2,577
Other research and development 987 472 2,338 2,384 6,021
Total research and development 1,659 510 3,056 3,577 8,598
General and administrative 2,136 712 3,382 5,250 8,690
Total operating expenses     6,438 8,827 17,288
Loss from operations (3,795) (1,222) (6,438) (2,468) (17,288)
Total other expense (income), net (41) 487 (443) 675 (234)
Net loss $ (3,754) $ (1,709) $ (5,995) $ (3,143) $ (17,054)