Hoggatt J, Tate TA, Pelus LM. Int J Nanomed. 2015;10:2647–2652.In this article, Lipegfilgrastim was referred to as a “long-acting biosimilar filgrastim”. The term “biosimilar” was used too broadly in this case, as Lipegfilgrastim was not approved under the biosimilar classification by the EMA. Rather, lipegfilgrastim has an active substance that is similar to filgrastim, with similar pharmacokinetics, receptor binding affinity, safety and efficacy as pegfilgrastim.