The present invention relates to a pharmaceutical composition for the treatment of diseases which involve cell proliferation. The invention also relates to a method for the treatment of said diseases, comprising co-administration of a compound 1 of Formula (I) wherein the groups L, R 1 , R 2 , R 3 , R 4 and R 5 have the meanings given in the claims and specification, optionally in form of its tautomers, racemates, enantiomers, diastereomers and the mixtures thereof and optionally in form of the pharmacologically acceptable acid addition salts, solvates, hydrates, polymorphs, physiologically functional derivatives or prodrugs thereof and of an effective amount of an active compound 2 and/or co-treatment with radiation therapy, in a ratio which provides an additive and synergistic effect, and to the combined use of a compound 1 of Formula (I) and of an effective amount of an active compound 2 and/or radiotherapy for the manufacture of corresponding pharmaceutical combination preparations.
