It has been documented that the anti-CD40 human IgG1 antibody produces potent antitumor activity in tumor models with the mFcγR−/−hFCGR2B genotype, depleting (by N297A mutation) or increasing (by S267E mutation) the binding affinity to hFcγRIIB, respectively abrogating or enhancing anti-tumor activity [38]. This evidence concerns the gene CD40 and neoplasm.