# Redundant, incompletely overlapping annotation of gene fusions

**URL:** <https://forum.depmap.org/t/redundant-incompletely-overlapping-annotation-of-gene-fusions/3555>\
**Category:** Issues and Bugs\
**Created:** [September 8, 2024, 12:56am UTC](https://forum.depmap.org/t/redundant-incompletely-overlapping-annotation-of-gene-fusions/3555 "2024-09-08T00:56:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jackwalkerstevenson](https://avatars.discourse-cdn.com/v4/letter/j/ba9def/32.png) [@jackwalkerstevenson](https://forum.depmap.org/u/jackwalkerstevenson)\
**Post date:** [September 8, 2024, 12:56am UTC](https://forum.depmap.org/t/redundant-incompletely-overlapping-annotation-of-gene-fusions/3555/1 "2024-09-08T00:56:08Z")

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Hi, DepMap folks. I’m trying to use the DepMap 24Q2 Fusions dataset to identify cells with the BCR::ABL1 gene fusion, and I’ve noticed what looks like a mistake in the annotation: the dataset contains both “BCR-ABL1” and “ABL1-BCR” fusions, and the “BCR-ABL1” category appears to completely contain the “ABL1-BCR” category, plus a few more cell lines. The cell lines I see with both fusions annotated are KU812, JURLMK1, EM2, LAMA84, BV173, KYO1, SUPB15, KCL22, and MEG01. The cell lines with just “BCR-ABL1” annotated are CMLT1, K562 and NCO2.  
Am I interpreting this correctly as a mistake in the annotation? Might there be analogous errors in other annotated fusions? Thanks!