Tomivosertib (eFT-508) is a dual inhibitor of MAP kinase-interacting kinases (MNK1 and MNK2) thereby controlling translation. It has potent in vivo antitumor activity in models of diffuse large cell B-cell lymphoma and solid tumors. Tomivosertib acts on multiple points in the cancer immunity cycle simultaneously, underscoring its therapeutic potential as both a monotherapy and in combination with existing checkpoint inhibitor treatments. Preclinical studies suggest combining tomivosertib with a checkpoint inhibitor can overcome mechanisms of resistance to checkpoint inhibitors, resulting in enhanced sensitivity to checkpoint inhibitors and a higher response rate. In addition, preclinical data demonstrate that tomivosertib as a single agent promotes antitumor immunity that persists after stopping drug treatment. Tomivosertib is currently being evaluated in Phase 2 clinical trials in solid tumors and lymphoma. Additionally, tomivosertib may be a new therapeutic for neuropathic pain.