The effect of the electric fields generated by the NovoTTF-100L device (TTFields, TTF) has demonstrated significant activity in in vitro and in vivo pancreatic adenocarcinoma pre-clinical models both as a single modality treatment, in combination with gemcitabine and in combination with paclitaxel. TTFields therapy has also shown to inhibit metastatic spread of malignant melanoma in in vivo experiment.