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Common Stock - Schedule of Reconciliation of Shares Issued and Outstanding (Detail) - Common Stock [Member] - shares
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Class of Stock [Line Items]      
Total shares of common stock legally issued and outstanding 35,736,584 544,967 375,492
Less: unvested early exercised shares of common stock (17,820) (757) (41,834)
Total shares issued and outstanding 35,718,764 544,210 333,658