Biosimilars/Research
How are biosimilars special
Despite biosimilars being around in the EU since 2006 physicians are still often reluctant to prescribe them. Members and experts of the Working Party on Similar Biologic Medicinal Products of the European Medicines Agency (EMA) highlight what physicians need to know to make informed and appropriate treatment choices for their patients [1].
Quality attribute changes for rituximab
Last updated: 4 April 2013
Sandoz researchers found quality changes in commercially available rituximab (Rituxan/Mabthera) over a period of time. Since the drug remained on the market with an unchanged label, this would indicate that the changes were accepted by the health authorities.
Research on biosimilars in rheumatology
Period: September to December 2012
Over the past decade, the availability of targeted biological therapies has revolutionized the treatment of rheumatoid arthritis, psoriatic arthritis and ankylosing spondylitis. However, the significant cost of these biologicals is often prohibitive and limits universal access to these effective therapeutic agents. Whereas generic drug equivalents are commercially available for many small-molecule medications, such lower cost alternatives to targeted biological therapies are not yet available in the US or the EU. The first biological therapeutics in rheumatology is now approaching patent expiration and biosimilars are now in randomized controlled trials. This means that cheaper biosimilars for the treatment of rheumatic diseases are likely to enter the market in the near future, increasing patient access to these life-changing treatments.
Prospects for producing follow-on biological products in Brazil
New research shows the need for local production of biologicals in Brazil in order to offset the increasing medicines budget and reduce the trade deficit when it comes to drugs [1].
MS patient dies from immunogenicity to biological drug
A Swedish woman diagnosed with multiple sclerosis (MS) appears to have died after developing unwanted immunogenicity toward the biological drug Tysabri (natalizumab), according to a report in the journal Neurology [1].
Medicines spending in Brazil
The Brazilian pharmaceutical market is the third largest in the Americas region, behind the US and Canada; it ranks first in the Latin American region. Pharmaceutical demand will continue to rise, fuelled by increasing disposable income. Despite this positive outlook, the trade deficit in Brazil grew from US$700 million at the end of the 1980s to a cumulative US$7.13 billion in 2008. In 2008 alone, Brazil imported US$1.4 billion in vaccines, serum and blood products, while exporting US$37 million in medicinal products with low added value [1].
Biologicals boom
Researchers predict that the present list of top 10 blockbuster drugs will change dramatically by 2014. The predictions are that by 2014 biological drugs will topple the present market leaders Pfizer’s Lipitor (atorvastatin) and Sanofi’s Plavix (clopidogrel), both of which are small molecule chemical entities [1].
Mobilization of stem cells in healthy donors by G-CSF biosimilars shows comparable efficacy and safety to Neupogen
Originator human recombinant granulocyte colony-stimulating factor (G-CSF) filgrastim has been widely used for the mobilization of CD34+ stem cells in healthy donors. However, there is limited experience with the use of biosimilar G-CSF for the mobilization of peripheral blood stem cells (PBSCs), especially in healthy donors. A recent study by Professor Schmitt and co-authors has addressed this issue and found that biosimilar G-CSF showed comparable efficacy and safety with reference G-CSF (Neupogen) when used for the mobilization of CD34+ stem cells, as well as CD3+ T-cells and nucleated cells, in healthy donors [1].
Overview of research on G-CSF biosimilars in 2012
Period: January to August 2012
A life-threatening complication for patients undergoing chemotherapy is febrile neutropenia, involving a loss of neutrophils (white blood cells) and fever [1]. Granulocyte colony-stimulating factors (G-CSFs) are growth factors, which stimulate the bone marrow to produce white blood cells and restore neutrophil production. In oncology and haematology, G-CSF is used with certain cancer patients to accelerate recovery from neutropenia after chemotherapy, allowing higher-intensity treatment regimens.
Positive phase I data for infliximab biosimilar
US-based Epirus Biopharmaceuticals (Epirus) announced on 4 January 2013 that its biosimilar infliximab candidate had ‘achieved bioequivalence’ to Remicade (infliximab) in a single dose comparator trial.
