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Balance Sheet Details - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract]    
Prepaid research and development $ 4,770 $ 4,473
Prepaid expenses 1,011 610
Other current assets 283 570
Interest receivable 193 194
Total prepaid expenses and other current assets $ 6,257 $ 5,847