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Summary of significant accounting policies (Tables)
12 Months Ended
Dec. 31, 2022
Summary of significant accounting policies  
Summary of useful lives of property and equipment

Asset category

    

Estimated useful life

Computer equipment and software

 

3 years

Furniture and fixtures

 

7 years

Laboratory equipment and office furniture

 

7 years

Leasehold improvements

 

Remainder of lease term

Schedule of potentially dilutive securities excluded from calculation of diluted net loss per share

The following table sets forth the potentially dilutive securities that have been excluded from the calculation of diluted net loss per share because to include them would be anti-dilutive (in common stock equivalent shares):

Year ended December 31, 

    

2022

    

2021

    

2020

Convertible preferred stock

56,227

Options to purchase common stock

 

480,274

 

229,308

 

188,552

Unvested restricted stock units

12,734

19,985

Total shares of common stock equivalents

 

549,235

 

249,293

 

188,552