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Since the commercialization of the first therapeutic monoclonal antibody product in 1986, this class of biopharmaceutical products has grown significantly so that, as of November 10, 2014, forty-seven monoclonal antibody products have been approved in the US or Europe for the treatment of a variety of diseases, and many of these products have also been approved for other global markets. At the current approval rate of ∼ four new products per year, ∼70 monoclonal antibody products will be on the market by 2020, and combined world-wide sales will be nearly 125 billion.
Ecker et al. (Sat,) studied this question.