De novo Philadelphia chromosome positive myelodysplastic syndrome: Report of two cases with brief literature review
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Date
2020-04
Journal Title
Journal ISSN
Volume Title
Publisher
Wolters Kluwer India Pvt. Ltd.
Abstract
Myelodysplastic syndromes (MDSs) are characteristically defined by the presence of specific karyotypic abnormalities, based on which they have been prognosticated. Translocation t(9;22)(q34;q11.2) (Philadelphia positive [Ph +ve]) and corresponding BCR-ABL fusion transcript is the defining parameter of chronic myeloid leukemia. It is also seen in a fair proportion of adult acute lymphoblastic leukemia. Occurrence of a Ph +ve MDS is very uncommon, and that too is seen mostly on progression to higher stage/acute leukemia. Even rarer is the de novo presence of Ph positivity in an MDS. A literature search through PubMed has shown only about forty cases of Ph +ve MDS among which less than half had shown Ph positivity at the time of initial diagnosis. Due to its rarity, this entity has not yet found its space in current WHO 2008 classification and is still under “yet to be validated phase” in current practice of hematological malignancies. The benefit of using a tyrosine kinase inhibitor in such a situation is also debatable. We report here two such cases of de novo Ph +ve MDS, diagnosed in last 1½ year at our institute along with brief literature review
Description
Keywords
Genetic abnormalities, myelodysplastic syndrome, Philadelphia chromosome
Citation
Khaliqur Rahman, Singh Manish Kumar, Gupta Ruchi, Dutta Sarjana, Nityanand Soniya. De novo Philadelphia chromosome positive myelodysplastic syndrome: Report of two cases with brief literature review. Journal of Cancer Research and Therapeutics. 2020 Apr; 16(1): 173-176