The present invention relates to methods for the treatment of from ovarian, lung or colorectal cancer by means of the use of agents capable of inhibiting the expression and/or capable of blocking the activity of leukemia inhibitory factor (LIF). The invention also relates to in vitro methods for designing a customised therapy for a patient suffering from a ovarian, lung or colorectal cancer and for selecting a patient suffering from a ovarian, lung or colorectal cancer to be treated with an agent capable of inhibiting the expression and/or capable of blocking the activity of LIF.
