Herein is reported a multispecific antibody comprising two circular fusion polypeptides each of them comprising a VH/VL-pair and thereby a first and a second binding site, whereby a third VH/VL-pair and thereby a third binding site is formed by the associated of the two circular fusion polypeptides.本發明係關於一種包含兩個環形融合多肽之多特異性抗體,該等環形融合多肽各包含VH/VL-對及藉此之第一及第二結合位點,由此第三VH/VL-對及藉此之第三結合位點會由該兩個環形融合多肽之締合形成。