This technology includes the use of LZK and DLK inhibitors to be used for the treatment of head and neck squamous cell carcinoma (HNSCC) or lung squamous cell carcinoma (LSCC). Specifically, we demonstrate that inhibitors that can be repurposed to target LZK suppresses LZK kinase-dependent stabilization of MYC and activation of the PI3K/AKT pathway. In vivo preclinical cell line xenograft mouse model demonstrates that targeting LZK will suppress tumor growth. We also demonstrate that several additional compounds potently inhibit LZK and could serve as new therapeutic modalities.