Antibody CD47 shrinks variety of human tumors

That is ones in a dish or in mice.  Not yet in Vivo

But like many other silver bullets this may peter out in clinical trials or it may lead to another great treatment.

This would be one type of protein that would trigger a wide variety of tumors to be attacked by the bodies own immune system.

Single antibody shrinks variety of human tumors transplanted into mice, Stanford study shows – Office of Communications & Public Affairs – Stanford University School of Medicine.

Or HERE