Efbemalenograstim alfa (F 627) is a recombinant fusion protein comprising a long-acting dimeric granulocyte colony-stimulating factor (G-CSF) with two human G-CSF molecules connected via a peptide linker to a human immunoglobulin G2 (hIgG2)-Fc fragment. This biopharmaceutical agent induces the production of white blood cells [1].