ZAP70 and cancer: By applying this approach, tebrophen (3,3',5,5'-tetrabromobiphenyl-2,2',4,4'-tetrol, Figure 1), a drug known for the treatment of viral eye diseases, was found to inhibit activities of inflammation and cancer related targets, such as tyrosine kinases Lck and ZAP-70, and hydrolase Dipeptidyl peptidase IV (DPPIV/CD26), recently extensively studied [5].