Disclosed is a combination which comprises (a) an antineoplastic antimetabolite and (b) an epothilone derivative of formula (I), wherein A represents O or NRN, wherein RN is hydrogen or lower alkyl, R is hydrogen or lower alkyl, R' is methyl, methoxy, ethoxy, amino, methylamino, dimethylamino, aminomethyl or methylthio, and Z is O or a bond, and optionally at least one pharmaceutically acceptable carrier and/or, optionally, a standard anti-diarrheal, for simultaneous, separate or sequential use, in particular for the treatment of a proliferative disease; a pharmaceutical composition comprising such a combination; the use of such a combination for the preparation of a medicament for the treatment of a proliferative disease; a commercial package or product comprising such a combination as a combined preparation for simultaneous, separate or sequential use; and to a method of treatment of a warm-blooded animal.