$atnm Keytruda is monoclonal antibody simlar to Daratumumab. Pembrolizumab Combination With Daratumumab is already been test. We know for sure that ac225 improved efficiency &amp;response rate of Daratumumab by 10X and should work for pembrolizumab &amp; opvido. @Merck @bmsnews $bmy $mrk https://t.co/6QpFT2IJhC