Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Summary of Significant Accounting Policies

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

	Year Ended December 31,
	2018	2017
Convertible preferred stock	—	36,196,193
Stock options to purchase common stock	825,205	603,291
Preferred stock warrants	—	8,725,289
Common stock warrants	1,966,930	607,295
	2,792,135	46,132,068