Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2021

Accounting Policies [Abstract]

Schedule of Outstanding Potentially Dilutive Securities Excluded in Calculation of Diluted Net Loss Per Share

The following table sets forth the outstanding, potentially dilutive securities that have been excluded in the calculation of diluted net loss per share because their inclusion would be anti-dilutive:

	As of September 30,
	2021	2020
Common stock options	4,367,123	3,717,406
Warrants to purchase common stock	2,349,595	2,349,595
Employee stock purchase plan	310,943	341,930
Total	7,027,661	6,408,931