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Leases | 6 Months Ended
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Jun. 30, 2023
Leases |
Leases | 8. Leases The Company leases office and laboratory space for approximately 11,000 square feet of space in Exton, Pennsylvania that currently extends until March 2024. The Company has an option to extend the lease for up to two additional five-year terms. Supplemental condensed balance sheet information related to leases comprised of the following (in thousands): ​ ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2023 | ​ | ​ | December 31, 2022
Operating lease right-of-use assets | $ | 174 | ​ | $ | 284
​ | ​ | ​ | ​ | ​ | ​
Operating lease liability | $ | 180 | ​ | $ | 229
Operating lease liability, net of current portion | ​ | — | ​ | ​ | 62
Total operating lease liability | $ | 180 | ​ | $ | 291
​ Operating lease liability and operating lease liability, net of current portion is included in accrued expenses and other current liabilities and other long-term liabilities, respectively, in the accompanying condensed balance sheets. Operating lease expense recorded as research and development and general and administrative expenses in the condensed statements of operations was as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ | ​ | 2023 | ​ | ​ | 2022 | ​ | ​ | 2023 | ​ | ​ | 2022
General and administrative | $ | 18 | ​ | $ | 19 | ​ | $ | 38 | ​ | $ | 37
Research and development | ​ | 42 | ​ | ​ | 41 | ​ | ​ | 83 | ​ | ​ | 84
Total lease expense | $ | 60 | ​ | $ | 60 | ​ | $ | 121 | ​ | $ | 121
​ Other operating lease information as of June 30, 2023 was as follows: ​
​ | ​ | ​
Weighted-average remaining lease term (in years) | ​ | 0.8
Weighted-average discount rate | ​ | 9.0%
​ Supplemental cash flow information related to the operating lease was as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​
​ | Six Months Ended June 30,
​ | ​ | 2023 | ​ | ​ | 2022
Cash paid for operating lease liability | $ | 122 | ​ | $ | 114
​ As of June 30, 2023, minimum rental commitments under the operating lease were as follows (in thousands): ​
​ | ​ | ​ | ​
Years ending December 31, |  | Amount
2023 (represents remaining six months in 2023) | ​ | $ | 124
2024 | ​ |  | 63
Total lease payments | ​ | ​ | 187
Less imputed interest | ​ | ​ | (7)
Present value of lease liability | ​ | $ | 180
​

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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 https://asc.fasb.org/subtopic&trid=77888251 + Details
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