On the other hand, in another study conducted on chronic phase CML patients, no correlation was found between MCL1 level and assessment of prognosis, but researchers suggested that the role of MCL1 in the development of drug resistance should be further examined with other studies using more samples (Darojat et al. 2023). Here, MCL1 is linked to chronic myelogenous leukemia, BCR-ABL1 positive.