| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenue: | ||||||||||||||
| Research and collaboration revenue | — | |||||||||||||
| YoY growth | +18.8% | — | -46.6% | — | ||||||||||
| Operating Expenses: | ||||||||||||||
| Research and development | — | |||||||||||||
| General and administrative | — | |||||||||||||
| Total operating expenses | — | |||||||||||||
| % of revenue | 852.1% | — | 3771.3% | 1817.1% | ||||||||||
| Loss from operations | — | |||||||||||||
| % of revenue | -752.1% | — | -3671.3% | -1717.1% | ||||||||||
| Other (expense) income, net: | ||||||||||||||
| Interest income | — | |||||||||||||
| Change in fair value of derivative tranche liability | — | |||||||||||||
| Other (expense) income | — | — | — | |||||||||||
| Total other (expense) income, net | — | |||||||||||||
| Net loss | ||||||||||||||
| % of revenue | -1884.8% | — | -11575.9% | -1899.2% | ||||||||||
| Net loss per share attributable to common stockholders, basic (in dollars per share) | — | |||||||||||||
| Net loss per share attributable to common stockholders, diluted (in dollars per share) | — |