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One patient sample (e13a2 transcript detected by nested PCR) attracted attention by revealing an aberrantly spliced <jats:italic>BCR\u2010ABL1<\/jats:italic> transcript variant e13a1. The last 38 base pairs (bp) of <jats:italic>BCR<\/jats:italic> exon 13 were replaced by a 37 bp insertion of the <jats:italic>ABL1<\/jats:italic> intron 1\u20132\/exon 1 sequence. The rare aberrant <jats:italic>BCR\u2010ABL1<\/jats:italic> fusion transcript can cause discrepancies in molecular diagnostics. This scenario highlights the importance of an individual characterization of the <jats:italic>BCR\u2010ABL1<\/jats:italic> fusion sequence in case of unclear qRT\u2010PCR results.<\/jats:p>","DOI":"10.1002\/jha2.553","type":"journal-article","created":{"date-parts":[[2022,9,3]],"date-time":"2022-09-03T01:28:50Z","timestamp":1662168530000},"page":"1339-1342","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A new aberrantly spliced <i>BCR\u2010ABL1<\/i> transcript variant (e13a1) identified in routine monitoring using different quantitative reverse transcription polymerase chain reaction techniques in a patient with chronic myeloid leukemia"],"prefix":"10.1002","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9177-9133","authenticated-orcid":false,"given":"Nicole","family":"Naumann","sequence":"first","affiliation":[{"name":"Scientific Laboratory Department of Hematology and Oncology University Hospital 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