CD177 and Splenomegaly: Furthermore, PRV1 expression was negatively correlated with platelet count in ET (r=-0.3799, p = 0.0278) (Figure 7A) and PMF patients (r=-0.6713, p = 0.0084) (Figure 7B), and PRV1 expression in PMF leukocytes showed a positive correlation with the increase of the spleen size in centimeters (splenomegaly) (r = 0.6150, p = 0.0220) (Figure 7C).