4-(4-methylpiperazin-1-ylmethyl)-N-[4-methyl-3-(4-pyridin-3-yl)pyrimidin-2-ylamino)phenyl]-benzamide of the formula (I), or a pharmaceutically acceptablesalt thereof can be used in the treatment of rheumatoid arthritis. Theinvention also relates to a combination of the compound of the formula I or apharmaceutically acceptable salt thereof with one or more disease modifyingarthritis rheumatoid drugs (DMARDs).