Summary of significant accounting policies (Tables)

6 Months Ended

Jun. 30, 2021

Summary of significant accounting policies

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):

	Six months ended June 30,
	2021	2020
Options to purchase common stock	4,821,759	3,755,959
Unvested restricted stock units	507,050	—
Total shares of common stock equivalents	5,328,809	3,755,959