• R Grieshaber-Bouyer and H-M Lorenz.
• Medizinische Klinik V, Klinik für Hämatologie, Onkologie und Rheumatologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Deutschland. ricardo.grieshaberbouyer@med.uni-heidelberg.de.
• Internist (Berl). 2020 May 1; 61 (5): 522-529.

BackgroundBiologic therapies are a key component of modern medicine, especially in the treatment of chronic conditions and in particular immune-mediated diseases. Biosimilars are molecularly highly similar variants of biologic therapies approved after patent expiration of the original product.ObjectivesTo provide an overview of the emerging role of biosimilars and present data with respect to efficacy and safety.Current DataSince the approval of human insulin as the first biologic therapy, over 150 biologic therapeutics have been approved in the European Union (EU). Due to the high cost of development and production, biologic therapies place a heavy burden on healthcare systems and, at costs totaling 13.8 billion Euros annually, comprise one third of the annual drug expenditure in Germany. Biosimilars are highly similar versions of already approved biologic therapies that do not have clinically relevant differences with respect to efficacy, safety and immunogenicity, as far as can currently be ascertained. Through competition with the original product, biosimilars have been able to drive down prices and relieve the healthcare system without changing overall efficacy. The potential savings through biosimilars are estimated to be 500 million Euros in Germany alone. Currently, over 50 biosimilars of 16 different biologic therapies are approved in the EU.ConclusionsBiosimilars are safe and economical alternatives to biooriginal drugs that can boost access to modern, high-cost therapies and relieve healthcare systems.

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