Chronic Myeloid Leukemia with b3a3 (e14a3) Fusion: A Rare BCR/ABL Rearrangement Presenting with Thrombocytosis – Does MTHFR Polymorphism Matter

Fusion of b2a2 is the most common BCR/ABL rearrangement in CML; however, absent a2 exons are very rare. We describe a case with Philadelphia-positive chronic myeloid leukemia (CML) with a very rare b3a3 (e14a3) BCR/ABL junction. To our knowledge, only 15 such cases of CML have previously been report...

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Main Authors: Mohammad Muhsin Chisti, Daniel Steven Sanders
Format: Article
Language:English
Published: Karger Publishers 2018-07-01
Series:Case Reports in Oncology
Subjects:
Online Access:https://www.karger.com/Article/FullText/490697
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author Mohammad Muhsin Chisti
Daniel Steven Sanders
author_facet Mohammad Muhsin Chisti
Daniel Steven Sanders
author_sort Mohammad Muhsin Chisti
collection DOAJ
description Fusion of b2a2 is the most common BCR/ABL rearrangement in CML; however, absent a2 exons are very rare. We describe a case with Philadelphia-positive chronic myeloid leukemia (CML) with a very rare b3a3 (e14a3) BCR/ABL junction. To our knowledge, only 15 such cases of CML have previously been reported. These uncommon transcripts may be under-reported, since RT-PCR-based assays may fail to detect these fusions due to the location of the primers and probes used. We are reporting this case for the first time which presented with MTHFR mutation and significant thrombocytosis. There is very limited information on how this genotype expresses and responds to treatment, especially to tyrosine kinase inhibitors, as compared to classic CML. Also, the relationship between MTHFR mutation and CML is not clear, although studies have been done.
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spelling doaj.art-2c153ba4269e49e6b0a571cd1d72efdc2022-12-21T22:09:21ZengKarger PublishersCase Reports in Oncology1662-65752018-07-0111248549210.1159/000490697490697Chronic Myeloid Leukemia with b3a3 (e14a3) Fusion: A Rare BCR/ABL Rearrangement Presenting with Thrombocytosis – Does MTHFR Polymorphism MatterMohammad Muhsin ChistiDaniel Steven SandersFusion of b2a2 is the most common BCR/ABL rearrangement in CML; however, absent a2 exons are very rare. We describe a case with Philadelphia-positive chronic myeloid leukemia (CML) with a very rare b3a3 (e14a3) BCR/ABL junction. To our knowledge, only 15 such cases of CML have previously been reported. These uncommon transcripts may be under-reported, since RT-PCR-based assays may fail to detect these fusions due to the location of the primers and probes used. We are reporting this case for the first time which presented with MTHFR mutation and significant thrombocytosis. There is very limited information on how this genotype expresses and responds to treatment, especially to tyrosine kinase inhibitors, as compared to classic CML. Also, the relationship between MTHFR mutation and CML is not clear, although studies have been done.https://www.karger.com/Article/FullText/490697Chronic myelogenous leukemiaBCR-ABLe14a3b3a3
spellingShingle Mohammad Muhsin Chisti
Daniel Steven Sanders
Chronic Myeloid Leukemia with b3a3 (e14a3) Fusion: A Rare BCR/ABL Rearrangement Presenting with Thrombocytosis – Does MTHFR Polymorphism Matter
Case Reports in Oncology
Chronic myelogenous leukemia
BCR-ABL
e14a3
b3a3
title Chronic Myeloid Leukemia with b3a3 (e14a3) Fusion: A Rare BCR/ABL Rearrangement Presenting with Thrombocytosis – Does MTHFR Polymorphism Matter
title_full Chronic Myeloid Leukemia with b3a3 (e14a3) Fusion: A Rare BCR/ABL Rearrangement Presenting with Thrombocytosis – Does MTHFR Polymorphism Matter
title_fullStr Chronic Myeloid Leukemia with b3a3 (e14a3) Fusion: A Rare BCR/ABL Rearrangement Presenting with Thrombocytosis – Does MTHFR Polymorphism Matter
title_full_unstemmed Chronic Myeloid Leukemia with b3a3 (e14a3) Fusion: A Rare BCR/ABL Rearrangement Presenting with Thrombocytosis – Does MTHFR Polymorphism Matter
title_short Chronic Myeloid Leukemia with b3a3 (e14a3) Fusion: A Rare BCR/ABL Rearrangement Presenting with Thrombocytosis – Does MTHFR Polymorphism Matter
title_sort chronic myeloid leukemia with b3a3 e14a3 fusion a rare bcr abl rearrangement presenting with thrombocytosis does mthfr polymorphism matter
topic Chronic myelogenous leukemia
BCR-ABL
e14a3
b3a3
url https://www.karger.com/Article/FullText/490697
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