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Prepaid expenses and other current assets (Tables) | 12 Months Ended
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Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Schedule of Prepaid Expenses and Other Current Assets | Prepaid expenses and other current assets consisted of the following (in thousands):
| December 31,
| 2021 |  | 2020
Prepaid research and development | $ | 2,819 |  |  | $ | 1,898 |
Prepaid insurance | 2,585 |  |  | 1,459 |
Prepaid licenses | 819 |  |  | 665 |
Interest receivable | 385 |  |  | 386 |
Other | 156 |  |  | 90 |
Total prepaid expenses and other current assets | $ | 6,764 |  |  | $ | 4,498 |

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