Marker Warns of GVHD After Stem Cell Transplant MedPage Today Marker Warns of GVHD After Stem Cell Transplant. Published: Aug 7, 2013 | Updated: Aug 7, 2013. By Nancy Walsh, Staff Writer, MedPage Today. Reviewed by Robert Jasmer, MD; Associate Clinical Professor of Medicine, University of California, San ... New biomarker predicts treatment-resistant GVHD |