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Net Loss Per Share | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Net Loss Per Share | 9. Net Loss Per Share The following outstanding potentially dilutive shares, including all outstanding stock options, have been excluded from the calculation of diluted net loss per share for the periods presented due to their anti-dilutive effect:
|  | As of December 31, |
|  | 2021 |  |  | 2020 |
Stock options to purchase common stock |  |  | 2,406,668 |  |  |  | 1,898,395 |
Unvested restricted stock units |  |  | 106,394 |  |  |  | — |
Warrants to purchase common stock |  |  | 58,923 |  |  |  | — |
Total |  |  | 2,571,985 |  |  |  | 1,898,395 |

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