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Leases | 9 Months Ended
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Sep. 30, 2021
Leases [Abstract] |
Leases | 7. Leases As of September 30, 2021, we had an operating lease for 73,328 square feet of laboratory and office space in San Diego, California, with a lease term expiring on December 31, 2025 and one 5-year option to renew this lease on expiration. During the three and nine months ended September 30, 2021, we recognized operating lease expense of $0.9 million and $2.9 million, respectively, and we paid $0.9 million and $2.9 million, respectively, for our operating lease. Annual future minimum lease payments as of September 30, 2021 were as follows (in thousands):
2021 |  | $ | 994 |
2022 |  |  | 4,058 |
2023 |  |  | 4,178 |
2024 |  |  | 4,274 |
2025 |  |  | 4,379 |
Thereafter |  |  | — |
Total future minimum lease payments |  | $ | 17,883 |
Less: amount representing interest |  |  | (2,415 | )
Total lease liabilities |  | $ | 15,468 |
In October 2021, we entered into a lease amendment to reduce the amount of laboratory and office space in San Diego, California by 21,180 square feet. The corresponding reduction of leased space is effective November 1, 2021. In addition, in October 2021, we entered into a sublease agreement to sublet 23,873 square feet of laboratory and office space in San Diego, California, which is anticipated to be delivered to the subtenant on or before May 1, 2022. The sublease agreement expires on December 31, 2025 and is coterminous with the operating lease for the subleased space. As a result of the lease amendment and sublease agreement, our one 5-year option to renew the lease on expiration applies only with respect to our remaining 28,275 square feet of laboratory and office space in San Diego, California.

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details
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