FN1 and chronic myelogenous leukemia, BCR-ABL1 positive: Less fibronectin was also found in the BMM of mice with CML due to BCR-ABL1T315I, BCR-ABL1E255K, or BCR-ABL1Y253F, but not BCR-ABL1M351T compared with control mice (Figs. 4c and S5B).