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 CASE REPORT
Year : 2008  |  Volume : 45  |  Issue : 1  |  Page : 30-32

Three way translocation in a new variant of t(8;21) acute myeloid leukemia involving Xp22


1 Institute of Immunohaematology (ICMR), 13th Floor, New Multistoryed Building, KEM Hospital Campus, Parel, Mumbai - 400 012, Maharashtra, India
2 Department of Haematology, KEM Hospital Campus, Parel, Mumbai - 400 012, Maharashtra, India

Correspondence Address:
B R Vundinti
Institute of Immunohaematology (ICMR), 13th Floor, New Multistoryed Building, KEM Hospital Campus, Parel, Mumbai - 400 012, Maharashtra
India
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Source of Support: Indian Council of Medical Research, New Delhi, Conflict of Interest: None


DOI: 10.4103/0019-509X.40644

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The t(8;21)(q22;q22) is one of the most frequent chromosomal abnormality associated with acute myeloid leukemia (AML) M2 sub type. The additional chromosomal abnormalities including structural and numerical are frequently reported with the translocation, t (8;21)(q22;q22). We report a case of AML-M2 with t(X;8;21)(p22;q22;q22) associated with loss of Y chromosome. Using a dual color fluorescence in situ hybridization (FISH) analysis with ETO and AML1 probes, we demonstrated an ETO/AML1 fusion signal on the derivative chromosome 8 and one ETO signal on derivative Chromosome Xp22. The patient did not respond to therapy and follow-up of cytogenetics revealed same chromosome abnormality. Hence, this three way translocation involving X chromosome might be associated with poor prognosis.






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