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Nardi V, McAfee SL, Dal Cin P, Tsai HK, Amrein PC, Hobbs GS, Brunner AM, Narayan R, Foster J, Fathi AT, Hock H. OUP accepted manuscript. Oncologist 2022; 27:82-86. [PMID: 35641210 PMCID: PMC8895729 DOI: 10.1093/oncolo/oyab052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 11/05/2021] [Indexed: 11/13/2022] Open
Abstract
BCR-ABL1 kinase inhibitors have improved the prognosis of Philadelphia-chromosome-positive (Ph+)-acute lymphoblastic leukemia (ALL). Ph-like (or BCR-ABL1-like) ALL does not express BCR-ABL1 but commonly harbors other genomic alterations of signaling molecules that may be amenable to therapy. Here, we report a case with a NUP214-ABL1 fusion detected at relapse by multiplexed, targeted RNA sequencing. It had escaped conventional molecular work-up at diagnosis, including cytogenetic analysis and fluorescence in situ hybridization for ABL1 rearrangements. The patient had responded poorly to initial multi-agent chemotherapy and inotuzumab immunotherapy at relapse before the fusion was revealed. The addition of dasatinib targeting NUP214-ABL1 to inotuzumab resulted in complete molecular remission, but recurrence occurred rapidly with dasatinib alone. However, deep molecular remission was recaptured with a combination of blinatumomab and ponatinib, so he could proceed to allotransplantation. This case illustrates that next-generation sequencing approaches designed to discover cryptic gene fusions can benefit patients with Ph-like ALL.
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Affiliation(s)
- Valentina Nardi
- Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Boston, MA, USA
| | - Steven L McAfee
- Harvard Medical School, Boston, MA, USA
- Cancer Center, Massachusetts General Hospital, Boston, MA, USA
| | - Paola Dal Cin
- Harvard Medical School, Boston, MA, USA
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, USA
| | - Harrison K Tsai
- Harvard Medical School, Boston, MA, USA
- Department of Pathology, Boston Children’s Hospital, Boston, MA, USA
| | - Philip C Amrein
- Harvard Medical School, Boston, MA, USA
- Cancer Center, Massachusetts General Hospital, Boston, MA, USA
| | - Gabriela S Hobbs
- Harvard Medical School, Boston, MA, USA
- Cancer Center, Massachusetts General Hospital, Boston, MA, USA
| | - Andrew M Brunner
- Harvard Medical School, Boston, MA, USA
- Cancer Center, Massachusetts General Hospital, Boston, MA, USA
| | - Rupa Narayan
- Harvard Medical School, Boston, MA, USA
- Cancer Center, Massachusetts General Hospital, Boston, MA, USA
| | - Julia Foster
- Harvard Medical School, Boston, MA, USA
- Cancer Center, Massachusetts General Hospital, Boston, MA, USA
| | - Amir T Fathi
- Harvard Medical School, Boston, MA, USA
- Cancer Center, Massachusetts General Hospital, Boston, MA, USA
| | - Hanno Hock
- Harvard Medical School, Boston, MA, USA
- Cancer Center, Massachusetts General Hospital, Boston, MA, USA
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Corresponding author: Hanno Hock, Massachusetts General Hospital Cancer Center, 185 Cambridge Street CPZN 4212, Boston, MA 02114, USA. Tel: 617-643-3145;
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