Genomics

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Targeted nanopore sequencing for the identification of ABCB1 promoter translocations in relapsed acute myeloid leukemia [Targeted Resequencing]

ABSTRACT: Resistance to chemotherapy is the most common cause of treatment failure in acute myeloid leukemia and the drug efflux pump ABCB1 is a critical mediator. Here we demonstrate that in vitro daunorubicin exposure can induce activating ABCB1 promoter translocations in human myeloid cells, similar to those recently described in recurrent high-grade serous ovarian and breast cancer. We then develop a targeted nanopore sequencing approach that enables efficient identification of ABCB1 structural variants in high-grade serous ovarian cancer. Finally, we confirm that ABCB1high cases of relapsed AML are not characterized by ABCB1 promoter translocations but instead show high-level activity of native promoters, consistent with endogenous regulation.

ORGANISM(S): Homo sapiens

PROVIDER: GSE159331 | GEO | 2020/10/22

REPOSITORIES: GEO

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