OncoTargets and therapy · 2022
A Unique Three-Way Variant Philadelphia Chromosome t(6;9;22)(p21.3;q34;q11.2) in a Newly Diagnosed Patient with Chronic Myeloid Leukemia Responded to Flumatinib.
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Chen Lili, Zhang Junling, Yang Na, Tan Ningping, Meng Di, Zhang Fei, Qi Yuyang, Wu Guangqi, Li Zhenyu
Аннотация
BACKGROUND: Chronic myeloid leukaemia (CML) is a clonal malignant disorder of a pluripotent hematopoetic stem cell characterized by the presence of Philadelphia (Ph) chromosome in more than 90% of patients. However, about 5-10% of CML patients show a variant Ph translocation, involving one or more chromosomes in addition to 9 and 22. The treatment and prognostic impact of such additional abnormalities is not known. Herein, we report a unique case of a three-way translocation variant in CML and responded to flumatinib.
CASE PRESENTATION: A 22-year-old Asian female who presented with leukocytosis was diagnosed with CML. Cytogenetic karyotyping analysis showed 46,XX,t(6;9;22)(p21.3;q34;q11.2). She was treated with flumatinib, and MR5.0 (BCR-ABL1 IS≤0.001%, international scale) was achieved after three months of continuous treatment.
CONCLUSION: This was the 5th case of t(6;9;22), in particular, a new variant Ph translocation, and the first successful case treated with flumatinib in the world.
CASE PRESENTATION: A 22-year-old Asian female who presented with leukocytosis was diagnosed with CML. Cytogenetic karyotyping analysis showed 46,XX,t(6;9;22)(p21.3;q34;q11.2). She was treated with flumatinib, and MR5.0 (BCR-ABL1 IS≤0.001%, international scale) was achieved after three months of continuous treatment.
CONCLUSION: This was the 5th case of t(6;9;22), in particular, a new variant Ph translocation, and the first successful case treated with flumatinib in the world.