The present invention relates to a method for the treatment, amelioration or elimination of acute lymphoblastic leukemia (ALL), the method comprising the administration of a pharmaceutical composition comprising a CD19xCD3 bispecific single chain antibody construct to an adult patient in the need thereof.Konstrukt CD19xCD3 bispecifičnog jednolančanog antitela za upotrebu u postupku za tretman, ublažavanje ili eliminaciju akutne limfoblastne leukemije (ALL) kod odraslog pacijenta.Prijava sadrži još 16 patentnih zahteva.