METHOD FOR PURIFYING FUSION PROTEIN HAVING IGG FC DOMAIN

The present invention relates to: a method for purifying a fusion protein having an IgG Fc domain, comprising performing a multimodal chromatographic purification step on a raw material containing a fusion protein having an IgG Fc domain, so as to obtain a fusion protein having an IgG Fc domain with less than 0.05 EU/mg of endotoxins or a purity of size-exclusion-HPLC of 98% or higher; a method for purifying a fusion protein having an IgG Fc domain, the method not using anion exchange chromatography and comprising the steps of a) culturing cells for producing a fusion protein having an IgG Fc domain, b) recovering the protein from the cells cultured in step a), c) purifying the protein recovered in step b) through primary chromatography and d) purifying, through multimodal chromatography and cation exchange chromatography, the protein purified by primary chromatography in step c); and a composition comprising the fusion protein having an IgG Fc domain, purified by the method.