Commitments |
12 Months Ended |
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Dec. 31, 2023 | |
| Commitments and Contingencies Disclosure [Abstract] | |
| Commitments | Commitments License agreements During the year ended December 31, 2023, the Company did not record research and development expense related to non-refundable license payments. During the years ended December 31, 2022 and 2021, the Company recorded research and development expense related to non-refundable license payments of $1.5 million and $3.1 million, respectively. During the year ended December 31, 2023, the Company did not record research and development expense related to development milestones. During the years ended December 31, 2022 and 2021, the Company recorded research and development expense related to development milestones of $0.7 million and $2.1 million, respectively. The 2022 and 2021 development milestones were associated with XMT-1660 and UpRi, respectively. See Note 12, Leases, for the Company’s future obligations related to leases as of December 31, 2023.
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