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Income Tax - Summary Of Deferred Tax Assets And Liabilities (Detail) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Deferred tax assets |  |  |  |
Net operating loss carryforward | [1] | $ 12,555,225 | $ 7,615,613 | $ 4,477,240
Federal R&D Credit | [2] | 351,985 | 340,162 | 331,741
Accrued benefits |  | 63,153 | 9,892 | 14,715
Uncertain Tax Position—R&D Reserve |  | (70,397) | (68,032) | (66,349)
Total deferred tax assets |  | 12,899,966 | 7,897,635 | 4,757,347
Valuation allowance |  | (12,899,966) | (7,897,635) | (4,757,347)
Deferred tax asset, net of allowance |  | $ 0 | $ 0 | $ 0
[1] | Net operating losses carryforwards do not expire.
[2] | These credits expire after 20 years after their initial recognition if the entity is not able to utilize them.

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