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Segments (Tables) | 3 Months Ended
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Mar. 31, 2025
Segment Reporting [Abstract] |
Summary of the Segment Profit or Loss, Including Significant Segment Expenses | The following table is a summary of the segment profit or loss, including significant segment expenses (in thousands):
|  | Three Months Ended March 31, |
|  | 2025 |  |  | 2024 |
Segment expenses: |  |  |  |  |  |
Trem-cel(a) |  | $ | 6,382 |  |  | $ | 4,861 |
VCAR33(a) |  |  | 3,636 |  |  |  | 2,600 |
Other research and development(a) |  |  | 2,995 |  |  |  | 3,117 |
Salaries and benefits |  |  | 11,613 |  |  |  | 12,113 |
General corporate activities |  |  | 5,169 |  |  |  | 5,299 |
Other segment items(b) |  |  | 2,691 |  |  |  | 2,814 |
Segment expenses: |  |  | 32,486 |  |  |  | 30,804 |
Segment net loss |  |  | (32,486 | ) |  |  | (30,804 | )
(a) Includes only external research and development expenditures. (b) Other segment items are primarily comprised of taxes, interest income on marketable securities and certain non-cash expenses such as stock-based compensation, depreciation expense, and non-cash lease expense.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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