The survey, which was carried out prior to the first biosimilar approval, questioned 400 US physicians about what they expected and wanted to see when it comes to biosimilars labelling. Specialists in dermatology, endocrinology, oncology, nephrology, neurology and rheumatology were included in the research, which was carried out via a web-based survey.

The results of the survey highlighted the following:

• 90% of respondents thought that it was important that a product label for a biosimilar clearly indicates that it is a biosimilar.
• 82% of respondents believe it is important that the biosimilar label includes the analytical data developed by the biosimilar sponsor to demonstrate its analytical similarity to the reference product.
• 83% of respondents thought that it was important that the biosimilar label includes the clinical data, if any, submitted to the Food and Drug Administration (FDA) by the biosimilar sponsor to demonstrate that it is highly similar to the reference product.
• 79% of respondents believe it is important that the label explicitly states that specific indications or conditions of use that are approved for the originator product are NOT approved for the biosimilar product.

ASBM Executive Director, Mr Michael Reilly stated that ‘we believe this data provides FDA with clear guideposts for what is necessary to foster physician confidence in biosimilar medicines.’ He added that ‘the survey was conducted prior to the first biosimilar approval and is more consistent with the draft guidance released in 2012 than the label of the first biosimilar product.’

FDA approved its first biosimilar on 6 March 2015. The biosimilar Zarxio (filgrastim-sndz) was approved in the US for the five indications for which US-licensed Neupogen (filgrastim) was approved. FDA has designated a placeholder non-proprietary name for this product – filgrastim-sndz. The agency has stated that this decision should not be viewed as reflective of the agency’s decision on a comprehensive naming policy for biosimilar and other biological products. FDA has also stated that it intends to issue draft guidance on how current and future biological products marketed in the US should be named ‘in the near future’ [2].

This issue of naming is still a hot topic in the US, with campaigners on both sides lobbying FDA [3, 4]. The World Health Organization is considering the use of a biological qualifier (possibly a four-letter code) to distinguish biosimilars [5]. While the GPhA has proposed using manufacturer names to distinguish biosimilars as a compromise [6].

Related article
European doctors have insufficient knowledge of biosimilars

References
1.   Safe Biologics. Olsen K. ASBM Labeling Survey. Industry Standard Research. February 2015 [homepage on the Internet]. [cited 2015 Apr 16]. Available from: http://safebiologics.org/resources/wp-content/uploads/2015/03/February-2015-Labeling-Report.pdf
2.   GaBI Online - Generics and Biosimilars Initiative. FDA approves its first biosimilar [www.gabionline.net]. Mol, Belgium: Pro Pharma Communications International; [cited 2015 Apr 17]. Available from: www.gabionline.net/Biosimilars/News/FDA-approves-its-first-biosimilar 
3.   GaBI Online - Generics and Biosimilars Initiative. Physicians believe biosimilars should have different names [www.gabionline.net]. Mol, Belgium: Pro Pharma Communications International; [cited 2015 Apr 17]. Available from: www.gabionline.net/Biosimilars/General/Physicians-believe-biosimilars-should-have-different-names 
4.   GaBI Online - Generics and Biosimilars Initiative. 32 organizations agree biosimilars should have same names [www.gabionline.net]. Mol, Belgium: Pro Pharma Communications International; [cited 2015 Apr 17]. Available from: www.gabionline.net/Biosimilars/General/32-organizations-agree-biosimilars-should-have-same-names 
5.   GaBI Online - Generics and Biosimilars Initiative. WHO investigates use of a biological qualifier for biosimilars [www.gabionline.net]. Mol, Belgium: Pro Pharma Communications International; [cited 2015 Apr 17]. Available from: www.gabionline.net/Biosimilars/General/WHO-investigates-use-of-a-biological-qualifier-for-biosimilars 
6.   GaBI Online - Generics and Biosimilars Initiative. GPhA proposes using manufacturer names to distinguish biosimilars [www.gabionline.net]. Mol, Belgium: Pro Pharma Communications International; [cited 2015 Apr 17]. Available from: www.gabionline.net/Biosimilars/General/GPhA-proposes-using-manufacturer-names-to-distinguish-biosimilars 

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