Overexpression and mutation of MEK have been reported to cause a wide variety of cancers especially resistant cancers. The MEK1/2 inhibitors in combination with other kinase (BRaf/KRas/PI3K) inhibitors showed significant anti-proliferative activity. Other combination of MEK inhibitor with PD-1, DYRK1, EGFR, BTK and/or VEGF inhibitors, etc. showed promising results in many cancers including colorectal, pancreatic, gastrointestinal, solid tumor, breast cancer, melanoma and multiple myeloma, etc. The dual or multi-targeted approaches of these combinations showed better and precise treatment of patients with resistant cancer.