AML patients with high PAR1 expression (level >9 log arbitrary units in this microarray analysis) did not reveal changes in hemoglobin, LDH, number of platelets, white blood cells or blasts in the blood or bone marrow at the time of diagnosis compared to patients with lower PAR1 expression (level <9 log arbitrary units in this microarray; data not shown). This evidence concerns the gene F2R and acute myeloid leukemia.