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Selected Balance Sheet Information - Schedule of Prepaid expenses and other current assets (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Selected Balance Sheet Information |  |
Prepaid clinical research organizations | $ 1,215 | $ 458
Prepaid manufacturing expenses | 519 | 0
Prepaid insurance | 353 | 803
VAT receivable | 278 | 0
Prepaid consulting, subscriptions and other expenses | 257 | 272
Total | $ 2,622 | $ 1,533

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