ABL1 and chronic myelogenous leukemia, BCR-ABL1 positive: Here, we report on the occurrence of a novel BCR‐ABL1 transcript generating most likely a functional BCR‐ABL1 tyrosine kinase in a Ph‐positive CML patient where standard diagnostic quantitative reverse transcription polymerase chain reaction (qRT‐PCR) procedure showed no amplification of the typical BCR‐ABL1 transcripts.