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Balance Sheet Accounts
 9 Months Ended
Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Balance Sheet Accounts Balance Sheet Accounts
Prepaid expenses and other current assets consist of the following (in thousands):
September 30, 2020December 31, 2019
Insurance$693 $200 
Clinical trial costs181 224 
Professional fees125 49 
Other31 84 
Prepaid expenses and other current assets$1,030 $557 

Accrued expenses and other current liabilities consist of the following (in thousands):
September 30, 2020December 31, 2019
Clinical trial costs$1,202 $371 
Compensation and related benefits719 606 
Professional fees383 194 
Accrued expenses and other current liabilities$2,304 $1,171