Common Stock - Schedule of Potential Conversion of Preferred Stock and Future Issuance of Common Stock (Details) - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Class Of Stock [Line Items]
Shares reserved for future issuance	10,356,787	6,181,336
Outstanding Stock Options
Class Of Stock [Line Items]
Shares reserved for future issuance	6,526,973	5,188,354
Restricted stock Units
Class Of Stock [Line Items]
Shares reserved for vesting of restricted stock units	44,427
2019 Stock Incentive Plan
Class Of Stock [Line Items]
Shares reserved for future issuance	953,886	286,324
2019 Stock Incentive Plan | Restricted stock Units
Class Of Stock [Line Items]
Shares reserved for vesting of restricted stock units		0
2019 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Shares reserved for future issuance	1,113,021	706,658
2022 Stock Inducement Plan
Class Of Stock [Line Items]
Shares reserved for future issuance	1,718,480	0