We have been studying GVHD at the University of Michigan for the past decade. We know that high levels of TNF makes GVHD worse. Our research has shown that adding an anti-TNF drug (called etanercept or Enbrel®) to the standard GVHD treatment of high dose steroids leads to improvement in the GVHD in twice as many patients compared to when steroids alone are used. It is now standard practice at the University of Michigan and many other centers to treat GVHD with both steroids and etanercept.