elranatamab will enhance the stage or influence of fentanyl transdermal by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Keep track of. Elranatamab causes cytokine release syndrome (CRS) that could suppress action of CYP enzymes, leading to enhanced publicity of CYP substrates.brivaracetam and fentanyl transdermal the two enhan