ABL1 and chronic myelogenous leukemia, BCR-ABL1 positive: The objectives of our study were to evaluate the performance of droplet dPCR using the Europe Against Cancer (EAC) standardized BCR-ABL1 and ABL1 assays and to evaluate the suitability of dPCR for molecular monitoring of CML patients with low or undetectable levels of BCR-ABL1 in comparison with routinely used methods.