Balance Sheet Components - Summary of Property and Equipment, Net (Detail) - USD ($) $ in Thousands |
Jun. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment, gross | $ 19,806 | $ 19,802 |
| Less: accumulated depreciation | (6,104) | (5,029) |
| Total property and equipment, net | 13,702 | 14,773 |
| Leasehold Improvements [Member] | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment, gross | 17,245 | 17,245 |
| Laboratory Equipment [Member] | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment, gross | 1,832 | 1,832 |
| Furniture and Fixtures [Member] | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment, gross | 692 | 692 |
| Computer Equipment and Software [Member] | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment, gross | 33 | $ 33 |
| Construction in Progress [Member] | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment, gross | $ 4 |