Drugs synergistic with Velcade: Elotuzumab, Perifosine, Vorinostat, Panobinostat, more.
Synergistic with Revlimid: Vorinostat, panobinostat, more.
Also the efficacy of the traditional therapy melphalan/prednisone/thalidomide (MPT) is improved with Vorinostat or panobinostat. Resistance to Rev/Velcade/Dex (RVD) can also be overcome with Vorinostat.
Plitidepsin suppresses proliferation and anti-apoptosis genes. In other words, it affects the genes which cause the myeloma cell to grow rapidly, and the genes that prevent the cell from dying when it knows that it's goofy and should die. An engineer's view. That's really cool stuff.
Elotuzumab works by yet another mechanism, and has shown a significant benefit in combination with both Revlimid and Velcade.
Bottom line: Some of these new therapies are very promising, when used in combination with existing drugs, and ongoing trials will tell us which will provide the most help and for whom.