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REVENUE, CREDIT CONCENTRATIONS AND GEOGRAPHIC INFORMATION (Tables)
9 Months Ended
Sep. 30, 2021
Concentration Risk And Geographic Information [Abstract]  
Schedule of Total Revenues from External Customers and Collaborative Partners by Geographic Region
The following table disaggregates Total Revenues from external customers and collaborative partners by geographic region. Net product revenues by geographic region are based on patient location for the Company’s commercial products, except for Aldurazyme, which is sold exclusively to Sanofi Genzyme (Genzyme) who markets and sells Aldurazyme worldwide. Aldurazyme revenues earned by the Company are included in the U.S. region as the transactions are with Genzyme, whose headquarters is located in the U.S.
Three Months Ended
September 30,
Nine Months Ended
September 30,
2021202020212020
Total revenues by geographic region:
United States$196,239 $252,948 $608,670 $729,672 
Europe115,497 121,158 450,016 375,453 
Latin America38,958 44,064 140,911 141,852 
Rest of world58,048 58,614 196,868 161,361 
Total revenues$408,742 $476,784 $1,396,465 $1,408,338 
Schedule of Net Product Revenues by Product
The following table disaggregates total Net Product Revenues by product.
Three Months Ended
September 30,
Nine Months Ended
September 30,
2021202020212020
Net product revenues by product:
Vimizim$136,744 $147,891 $466,697 $401,789 
Naglazyme71,172 76,323 297,321 271,585 
Kuvan67,687 123,993 217,257 368,604 
Palynziq60,729 46,092 173,702 121,354 
Brineura32,984 25,455 90,641 75,223 
Voxzogo144 — 144 — 
Firdapse— — — 1,316 
Total net product revenues marketed by the Company$369,460 $419,754 $1,245,762 $1,239,871 
Aldurazyme net product revenues marketed by Genzyme24,380 40,987 $102,517 $128,945 
Total net product revenues$393,840 $460,741 $1,348,279 $1,368,816 
Schedule of Total Net Product Revenues Based on Patient Location
The table below disaggregates total Net Product Revenues based on patient location for products sold directly by the Company, and global sales of Aldurazyme, which is marketed by Genzyme. 
Three Months Ended
September 30,
Nine Months Ended
September 30,
2021202020212020
United States$166,554 $203,892 $491,028 $582,734 
Europe108,568 115,548 424,144 360,718 
Latin America38,958 44,064 140,911 141,852 
Rest of world55,380 56,250 189,679 154,567 
Total net product revenues marketed by the Company$369,460 $419,754 $1,245,762 $1,239,871 
Aldurazyme net product revenues marketed by Genzyme24,380 40,987 102,517 128,945 
Total net product revenues$393,840 $460,741 $1,348,279 $1,368,816 
Schedule of Net Product Revenue Concentrations Attributed to Largest Customers
The following table illustrates the percentage of the Company’s total Net Product Revenues attributed to the Company’s largest customers for the periods presented. 
Three Months Ended
September 30,
Nine Months Ended
September 30,
2021202020212020
Customer A20 %16 %17 %15 %
Customer B16 %14 %14 %14 %
Customer C11 %11 %10 %12 %
Total47 %41 %41 %41 %