CEL and chronic myelogenous leukemia, BCR-ABL1 positive: When measured in DMT-naïve patients, CEL plasma levels (R = 0.25, Rsqr = 0.06, Adj Rsqr = 0.05, p = 0.01) correlated with the rate of clinical relapse, during the two years before the time of blood sampling, more significantly than CML plasma levels (R = 0.23, Rsqr = 0.05, Adj Rsqr = 0.04, p = 0.04).