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"What Is a Generic Biopharmaceutical? Biogeneric? Follow-On Protein? Biosimilar? Follow-On Biologic?"
Abstract: The concepts, paradigms, terminology and definitions concerning generic biopharmaceuticals (biogenerics) are still in a primitive state. Use of essentially all current terms may support, denigrate or obfuscate various views and discussions of the topic, e.g., to many 'generic' (and biogeneric) evokes negative connotations from association with generic drugs and/or suggests that products are identical, rather than similar/related.
There are three basic views/paradigms/definitions of generic biopharmaceuticals. Entity-based views concentrate on the products and active agents, including chemical structures and the unique aspects imparted by their biological source/identity, manufacturing process and specifications (process=product paradigm). Regulatory-based views concentrate on biopharmaceuticals as being approved or on track for approval as biogenerics (involving abbreviated filings based on comparative testing, sometimes therapeutic equivalence/substitution). Market/commercial-based views concentrate on products as competing for similar/same indications, having similar names, or any other perceived similarities. Depending on the view/paradigm/definition used and whether one takes a world or just Western (major market)-centric view, there are currently either many (hundreds), some or just a few biogeneric products in commerce; and biogenerics have either been around for a century or more, a few decades, a few years or do not yet even exist.
Abstract: Because of their complexity,
biopharmaceutical products defy use of various
conventional chemical and
pharmaceutical information paradigms and
methods that work well
with drugs and other chemical
substances. Before one can deal with biogenerics, difficult questions must be answered, e.g., What
defines a biopharmaceutical agent or
product as unique and distinct from
others?; And, what entity-, regulatory-,
and/or market-based changes in an
agent or product require it to be
considered a new, different one? Biopharmaceuticals
will have to be defined, named, and tracked. But how should names be assigned, particularly to biogenerics? Should generic/similar names be
assigned, facilitating marketing as generics but likely decreasing safety, or
should unique names be assigned, favoring safety but likely decreasing the cost savings
generic offer? Both unique and (bio)generic names for
both finished products and active
ingredients will be required for different uses/users. However, current nomenclature systems are
inadequent for biopharamceuticals, e.g., with systematic nomenclature (IUPAC and CAS) designed to index the chemical literature, and nonproprietary
pharmaceutical nomenclature (USAN and INN) designed to handle small molecule, particularly generic, drugs.
New paradigms, terminology,
taxonomy, and nomenclature systems
are needed for biopharmaceuticals,
particularly ones that include
biogenerics. This industry maturation
will be painful, requiring industry and regulators to define products, their relationships and develop related
information resources and educational
programs. The U.S.
BIOPHARMACOPEIA Registry of Biopharamceuticals will assist in this process by developing new nomenclature systems, candidate names and a public Registry of biopharmaceutical products.
Abstract - Pharmaceuticals are composed of two major subsets - biopharmaceuticals and drugs (the vast majority). Biopharmaceuticals are pharmaceuticals inherently, usually obviously, biological in nature (e.g., proteins, cells) manufactured using biotechnology (involving live organisms). A derivative view limits this to recombinant proteins. Two other common views/paradigms/definitions ignore linkage to biological nature/biotechnology and take business/market-centric views. These either include as being biopharmaceuticals any/all pharmaceuticals connected with a biotechnology-like (small, entrepreneurial) company or that otherwise can be portrayed as being high-tech; or simply consider all pharmaceuticals to now be biopharmaceuticals (i.e., the drug/pharmaceutical industry is now the biopharmaceutical industry). These later two views are very common, but are dysfunctional, e.g., they arbitrarily include many or even all small molecule and other drugs (pharmaceuticals inherently chemical, not biological, in nature and manufactured by chemical means). With the biopharmaceutical industry lacking its own trade organization representing its interests [and sponsoring projects such as the BIOPHARMACOPIEA], the widespread misuse, cooptation and obfuscation of 'biopharmaceutical' (and 'biotechnology') places the underlying definitions, identity and public perception of the industry at risk to public relations, lobbying and rebranding efforts; and confounds discussions of biopharmaceuticals and related issues, e.g., biogenerics.
Nomenclature in Biopharmaceutical Products in the U.S. and European Markets (the book/database by this author)
U.S. BIOPHARMACOPEIA™ Registry of Biopharmaceutical Products
by regulatory agencies, formularies, other reference sources, etc.
This is the future home of the U.S. BIOPHARMACOPEIA Registry of Biopharmaceutical Products, a new nomenclature system and public Registry for commercial biopharmaceutical products and active agents, including biogenerics. See the proposal and call for sponsors/volunteers. Associated with this, links are provided below to articles concerning biopharmaceutical information, including biopharmaceutical and biogeneric terminology, nomenclature systems and the infrastructure of information resources supporting the biopharmaceutical industry.
published in BioProcess International, March and May 2007
Part 2: Information, Nomenclature, Perceptions, and the Market
"What is a Biopharmaceutical?"
- published in the March and May 2005 issues of BioExecutive:
- This reviews and critiques the views/paradigms/definitions of 'biopharmaceutical' no longer linked to biotechnology, with these aberrant definitions often adopted by many
in the financial community, press, companies and even major U.S. trade associations (BIO and PhRMA).
"Nomenclature and Registry Systems for
Biopharmaceuticals and Biogenerics":
[The links below provide access to sections of a large draft article, much of which is discussed more briefly in the ""What Is a Generic Biopharmaceutical?..." articles above].
Abstract: Conventional nomenclature and registry systems have been designed for drugs and other chemical substances, not biopharmaceuticals. These systems provide neither functional unique nor (bio)generic names for biopharmaceuticals -- failing to take into account unique aspects of biopharmaceuticals related to their biological source/identity, manufacturing process and specifications (process=product paradigm) and their being regulated commercial products (with different manufacturers, approvals, trade names, etc).
Systematic chemical nomenclature, e.g., IUPAC and CAS, concentrates on the primary structure of active agents, ignoring biological source, processing and other biotechnology aspects, while also ignoring regulatory and commercial distinctions among products. Conventional nomenclature systems designed to provide nonproprietary (generic) drug names, e.g., USAN, INN and FDA proper names for biologics, have serious limitations and appear unlikely to work well with biogenerics. Also, current nomenclature and registry systems each provide only one type of name, and present these in isolation or with a list of questionable/ill-defined synonyms. Nomenclature and registry systems are needed that:
1) fully and uniquely define/differentiate and generically characterize/classify biopharmaceutical products and active agents;
2) provide both candidate official unique and (bio)generic names/identifiers for products and active agents; and
3) appropriately annotate and coordinate these and other diverse names/identifiers.
Major controversies may be expected regarding the nonproprietary names to be officially adopted
for biogenerics, including for the writing/filling of prescriptions. Will these be unique names
(facilitating monitoring of adverse events, but confounding generic substitution), or
(bio)generic names (facilitating generic substitution, but confounding adverse event monitoring)?