Relapses over time related with combined number of NKG2D ligands with high expression (A) and amount of expression of NKG2D ligands (B). (A) legends in graph show total number of NKG2D ligands with high expression; (B) legends in graph show total intensity score of all NKG2D ligand expression. X-axis represents patient follow-up in years; Y-axis represents cumulative relapses in %. Log-rank p-values are shown in the graph. No associations were found with outcome concerning RFP for either combined number of expressed (A) or combined amount of expression (B) of ligands.