Biosimilars/Research
Overview of research on analytical techniques in the manufacturing of biosimilars in 2012
Period: January to August 2012
Biologicals are large, complex and heterogeneous proteins with variable molecular weights, typically ranging from 18,000 to 45,000 Da. The active substance of a biological is a collection of large protein isoforms and not a single molecular entity. This fact makes manufacturing of biosimilars much more of a challenge than when producing traditional small molecule generics. It also makes it highly unlikely that the active substances between two products are identical and makes it extremely difficult to establish biopharmaceutical equivalence using analytical techniques.
Biosimilar monoclonal antibodies on the horizon in Europe
European Medicines Agency's (EMA) Committee for Medicinal Products for Human Use adopted the final guideline on biosimilar monoclonal antibody (mAb) and it came into effect in December 2012. The agency is also currently reviewing two marketing authorization applications (MAAs) for the biosimilar mAb infliximab.
Significance of locally produced biosimilars in Iran
Biopharmaceuticals, drugs produced by live cell culture, have a fast growing market for the treatment of a range of conditions. Despite their clinical importance, however, their cost could impose an increasing burden on either national healthcare systems or patients’ out-of-pocket expenses. The potential for reducing the costs of biopharmaceuticals is therefore attracting the attention of policymakers in the health sector.
History of biosimilar monoclonal antibodies regulation in EU
Monoclonal antibodies (mAbs) are high molecular weight proteins (~150 kDa), with highly complex secondary and tertiary structures, subject to post-translational modifications, such as glycosylation.
Overview of research on manufacturing statistics and innovations of biosimilars in 2012
Period: January to August 2012
Manufacturing of biosimilars is much more challenging than producing traditional small molecule generics. Reasons for this include, in the first place, the huge costs associated with manufacturing of biosimilars, along with the fact that the risk of failure for biosimilars is significantly higher than that for small molecule generics. Secondly, biosimilars are larger and more complex molecules to manufacture. Finally, minor changes in the manufacturing process can cause significant changes in efficacy or immunogenicity.
Comparison of EPARs for G-CSF biosimilars approved in Europe
EMA approved its first biosimilar granulocyte colony-stimulating factor (G-CSF, filgrastim) for use in Europe back in 2008, since then, several biosimilar G-CSFs have been approved, including Biograstim, Filgrastim ratiopharm, Ratiograstim, Tevagrastim, Filgrastim Hexal, Zarzio and Nivestim. All biosimilar G-CSFs were approved using Amgen’s Neupogen as the reference product. Filgrastim ratiopharm was withdrawn on 20 April 2011.
Overview of research on regulatory issues surrounding biosimilars in 2012
Period: January to August 2012
In the area of regulation of biosimilars Europe has by far the best-established framework for approval and EMA has already issued both general and product specific guidelines for biosimilar applications to the EU [1]. The first biosimilar was approved in the EU in 2006 for Omnitrope (somatropin). There are now 14 biosimilars approved for use in Europe for three reference products: erythropoietin, granulocyte-colony stimulating factor and somatropin [2].
Overview of research on US regulatory issues surrounding biosimilars in 2012
Period: January to August 2012
The US is somewhat behind Europe in the biosimilars race, but has issued draft guidance and is expected to have a practical biosimilar approval pathway in place in the near future.
Dialogue needed to build confidence in biosimilars
Concerns about the safety and efficacy of biosimilars have led many healthcare professionals to become reluctant to prescribe these products for their patients [1]. According to a commentary by Dr Hans C Ebbers and co-authors, these concerns could be addressed through more engagements taking place between regulatory authorities and the medical community over the drafting of regulatory guidelines [2]. This would result in greater confidence in the regulatory process and trust in the products that gain approval.
Positive results from phase III study with biosimilar human insulin
One of Asia’s leading biotechnology companies, Biocon, announced on 31 October 2012 positive results from its global phase III study for its recombinant human insulin (Insugen). The study, which was carried out in type 1 diabetes mellitus (T1DM) patients, demonstrated comparable safety and efficacy compared to the originator product.
