DUSP1 and head and neck squamous cell carcinoma: Thus, in a recent study [52], CBD suppressed the proliferation and growth of head and neck squamous cell carcinomas by inducing the apoptotic and autophagy activity of DUSP1 (Dual Specificity Phosphatase 1), which is known to interfere as a negative regulator with EGFR-initiated mitogen-activated protein kinase (MAPK) signalling and associated proliferation.