CCL2 and acquired polycythemia vera: In respect to MF patients (PMF and Post-PV/ET-MF), the CCL2 rs1024611 SNP and the relative expression of CCL2 were significantly correlated to IPSS (p < 0.001) and no significant associations were obtained with thrombotic events, bleeding events, spleen size, LDH levels, leukemic risk, and overall survival (p = 0.610, p = 0.618, p = 0.636, p = 0.129, p = 0.698, and p = 0.545) and (p = 0.356, p = 0.667, p = 0.889, p = 0.803, p = 0.526, and p = 0.328), respectively.