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Intangible assets (Tables) | 6 Months Ended
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Jun. 30, 2026
Intangible assets |
Schedule of net book value of intangible assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ ​ ​ | As of June 30, 2026 | ​ | As of December 31, 2025
​ | ​ ​ ​ | Gross | ​ ​ ​ | ​ | ​ ​ ​ | ​ | ​ ​ ​ | Gross | ​ ​ ​ | ​ | ​ ​ ​ | ​
​ | ​ | carrying | ​ | Accumulated | ​ | Net book | ​ | carrying | ​ | Accumulated | ​ | Net book
In CHF thousands | ​ | amount | ​ | amortization | ​ | value | ​ | amount | ​ | amortization | ​ | value
Acquired IPR&D asset | ​ | 50,416 |  | — |  | 50,416 |  | 50,416 |  | — |  | 50,416
Total intangible assets | ​ | 50,416 |  | — |  | 50,416 |  | 50,416 |  | — |  | 50,416

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