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[Genetic analysis of two cases with MYC "negative" Burkitt lymphoma]
Rui Lyu1, Yingchun Zheng, Gang An
1Diagnosis and Treatment Center for Lymphoma, Hematology Hospital of Chinese Academy of Medical Sciences (Institute of Hematology, Chinese Academy of Medical Sciences), Tianjin 300020, China. lichengwen@ihcams.ac.cn.
Objective:
To carry out combined genetic analysis on two patients suspected for Burkitt lymphoma to facilitate their diagnosis and treatment.
Methods:
G banded karyotyping and interphase and metaphase fluorescence in situ hybridization (FISH) were used to detect the specific sites of chromosomes by using separate and fusion probes.
Results:
The separate probe showed no presence of MYC gene abnormality, while fusion probe confirmed the IGH::MYC translocation in the samples. Combined with the clinical features and pathological characteristics, the two patients were finally diagnosed with Burkitt lymphoma, which was confirmed by targeted capture next generation sequencing.
Conclusion:
The separate probe for the MYC gene has some shortcomings and should be used together with dual fusion probe to improve the accuracy of diagnosis.
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