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Accrued Expenses and Other Current Liabilities
 12 Months Ended
Dec. 31, 2021
Accrued Liabilities and Other Liabilities [Abstract]  
Accrued Expenses and Other Current Liabilities Accrued Expenses and Other Current Liabilities
 
Accrued expenses and other current liabilities as of December 31, 2021 and 2020 consisted of the following (in thousands):
 
 December 31,
 20212020
Research and development$8,221 $4,939 
Compensation and benefits4,310 3,120 
General and administrative1,275 771 
Sales and marketing 111 31 
Commercial operations1,733 1,913 
Royalty payment375 — 
Lease liability, current485 426 
Other9 110 
Total accrued expenses and other current liabilities$16,519 $11,310