The occurrence of chronic lymphocytic leukemia after chronic phase of chronic myeloid leukemia: case report and literature review.
2015
Abstract The occurrence of chronic myeloid leukemia (CML) and chronic lymphocytic leukemia (CLL) in the same patient is a rare event. In published literature, CML diagnosis follows CLL diagnosis or both leukemias are diagnosed simultaneously or rarely, CLL diagnosis follows CML diagnosis. We report the case of one patient with renal adenocarcinoma who was diagnosed with CLL 60 months after CML diagnosis. At that time, the patient was in complete cytogenetic response (CCyR) and major molecular response (MMR) of CML clone according to European LeukemiaNet (ELN) recommendations and presented clinical and hematological signs of progressive CLL clone. After 24 months of regular monitoring, the patient presented signs of CLL clone expansion. The FISH (fluorescence in situ hybridization) analysis for CLL prognostic factors, performed before treatment, was positive for tumor protein p53 (TP53) and 13q14.3 mutations. The Li-Fraumeni syndrome (LFS) was considered but TP53 mutation was considered acquired and patient's reduced overall, progression free and disease free survival might sustained that hypothesis. Imatinib (IM) was stopped and patient received chemotherapy until obtained a stable partial response. Twelve months after last cycle of chemotherapy, the patient received second line treatment due CLL clone progression signs but died due to neutropenia related complications. This article is the first Romanian report of CLL occurrence after CML diagnosis and as far as we know the fourth case report of such association in published literature.
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