Molecular Monitoring in Adult Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia with the Variant e13a3 BCR-ABL1 Fusion

Monitoring BCR-ABL1 transcript levels in patients with Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ ALL) is a widely adopted method to assess response to therapy. However, a small minority of Ph+ ALL patients express variant BCR-ABL1 transcript types, usually due to splicing of...

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Main Authors: Mireille Crampe, Laura Kearney, David O’Brien, C. Larry Bacon, Derville O’Shea, Stephen E. Langabeer
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Case Reports in Hematology
Online Access:http://dx.doi.org/10.1155/2019/9635070
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author Mireille Crampe
Laura Kearney
David O’Brien
C. Larry Bacon
Derville O’Shea
Stephen E. Langabeer
author_facet Mireille Crampe
Laura Kearney
David O’Brien
C. Larry Bacon
Derville O’Shea
Stephen E. Langabeer
author_sort Mireille Crampe
collection DOAJ
description Monitoring BCR-ABL1 transcript levels in patients with Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ ALL) is a widely adopted method to assess response to therapy. However, a small minority of Ph+ ALL patients express variant BCR-ABL1 transcript types, usually due to splicing of alternative BCR or ABL1 exons. Whether patients expressing these rare, variant BCR-ABL1 transcripts have a distinct phenotype or response to therapy is not known due to the limited number of reported cases. Here, we report the presenting features of Ph+ ALL in a young adult with a variant e13a3 BCR-ABL1 fusion. Molecular monitoring reflected the disease response from diagnosis through allogeneic stem cell transplantation which resulted in undetectable e13a3 BCR-ABL1 transcripts. This case highlights the value of molecular monitoring in Ph+ ALL patients with variant BCR-ABL1 transcripts and the requirement for standardization of such assays.
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spelling doaj-art-7960a0cc258f48a09144a1de16a373702025-02-03T06:13:41ZengWileyCase Reports in Hematology2090-65602090-65792019-01-01201910.1155/2019/96350709635070Molecular Monitoring in Adult Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia with the Variant e13a3 BCR-ABL1 FusionMireille Crampe0Laura Kearney1David O’Brien2C. Larry Bacon3Derville O’Shea4Stephen E. Langabeer5Cancer Molecular Diagnostics, St. James’s Hospital, Dublin 8, IrelandCancer Molecular Diagnostics, St. James’s Hospital, Dublin 8, IrelandDepartment of Haematology, St. James’s Hospital, Dublin 8, IrelandDepartment of Haematology, St. James’s Hospital, Dublin 8, IrelandDepartment of Haematology, Cork University Hospital, Cork, IrelandCancer Molecular Diagnostics, St. James’s Hospital, Dublin 8, IrelandMonitoring BCR-ABL1 transcript levels in patients with Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ ALL) is a widely adopted method to assess response to therapy. However, a small minority of Ph+ ALL patients express variant BCR-ABL1 transcript types, usually due to splicing of alternative BCR or ABL1 exons. Whether patients expressing these rare, variant BCR-ABL1 transcripts have a distinct phenotype or response to therapy is not known due to the limited number of reported cases. Here, we report the presenting features of Ph+ ALL in a young adult with a variant e13a3 BCR-ABL1 fusion. Molecular monitoring reflected the disease response from diagnosis through allogeneic stem cell transplantation which resulted in undetectable e13a3 BCR-ABL1 transcripts. This case highlights the value of molecular monitoring in Ph+ ALL patients with variant BCR-ABL1 transcripts and the requirement for standardization of such assays.http://dx.doi.org/10.1155/2019/9635070
spellingShingle Mireille Crampe
Laura Kearney
David O’Brien
C. Larry Bacon
Derville O’Shea
Stephen E. Langabeer
Molecular Monitoring in Adult Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia with the Variant e13a3 BCR-ABL1 Fusion
Case Reports in Hematology
title Molecular Monitoring in Adult Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia with the Variant e13a3 BCR-ABL1 Fusion
title_full Molecular Monitoring in Adult Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia with the Variant e13a3 BCR-ABL1 Fusion
title_fullStr Molecular Monitoring in Adult Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia with the Variant e13a3 BCR-ABL1 Fusion
title_full_unstemmed Molecular Monitoring in Adult Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia with the Variant e13a3 BCR-ABL1 Fusion
title_short Molecular Monitoring in Adult Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia with the Variant e13a3 BCR-ABL1 Fusion
title_sort molecular monitoring in adult philadelphia chromosome positive acute lymphoblastic leukemia with the variant e13a3 bcr abl1 fusion
url http://dx.doi.org/10.1155/2019/9635070
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