Abnormal accumulation of copper, however, is frequently observed in multiple cancers.5, 6, 7 A correlation has been established between increased levels of copper and the progression of several cancers.8, 9, 10, 11 In favouring tumour growth and angiogenesis, copper plays an integral role since it is revealed as the co‐factor for several pro‐angiogenic molecules like vascular endothelial growth factor (VEGF).6 In addition, copper ions also participate in oncogenic BRAF signalling in promoting tumour cell proliferation and migration.12 This evidence concerns the gene BRAF and cancer.