elranatamab will enhance the degree or effect of fentanyl transdermal by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Watch. Elranatamab causes cytokine release syndrome (CRS) which will suppress exercise of CYP enzymes, resulting in improved exposure of CYP substrates.Fentanyl is very addictive. It truly is One of the more po