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PREPAID EXPENSES AND OTHER CURRENT ASSETS | 3 Months Ended
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Mar. 31, 2024
PREPAID EXPENSES AND OTHER CURRENT ASSETS |
PREPAID EXPENSES AND OTHER CURRENT ASSETS | 4. PREPAID EXPENSES AND OTHER CURRENT ASSETS Prepaid expenses and other current assets consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, |  | December 31,
(in thousands) | ​ | 2024 | ​ | 2023
Prepaid research and development expenses | ​ | $ | 3,338 | ​ | $ | 2,880
Insurance premium asset | ​ | ​ | 182 | ​ | ​ | 566
Prepaid commercial and patient advocacy | ​ | ​ | 32 | ​ | ​ | 284
Research and development tax credit receivable | ​ |  | 262 | ​ |  | 262
Other prepaid expenses and current assets | ​ | ​ | 355 | ​ | ​ | 242
Total prepaid expenses & other current assets | ​ | $ | 4,169 | ​ | $ | 4,234
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