[Acute myeloid leukemia with type I CBFB::MYH11 fusion gene not detected by screening test for leukemia-related chimeric genes].
Rinsho Ketsueki
; 64(12): 1503-1507, 2023.
Article
en Ja
| MEDLINE
| ID: mdl-38220149
ABSTRACT
A 27-year-old woman with pancytopenia was admitted to our hospital. Bone marrow aspiration revealed 52.2% myeloperoxidase-positive myeloblasts, leading to a diagnosis of acute myeloid leukemia. While a screening test for chimeric genes related to leukemia initially yielded negative results, including for the CBFBMYH11 fusion gene, G-banded karyotyping uncovered the presence of inv (16)(p13.1q22). Further investigation by fluorescence in situ hybridization (FISH) confirmed the split signals for CBFB. A second screening test for leukemia-related chimeric genes with different PCR primers revealed the elusive CBFBMYH11 fusion gene. Subsequently, the type I CBFBMYH11 fusion gene was identified through exhaustive exploration using RNA sequencing for fusion gene discovery. This exceptional case highlights the existence of a distinctive subtype of CBFBMYH11 that may yield false-negative results in conventional chimeric fusion screening, thus emphasizing the indispensable utility of PCR primer modification, FISH, and RNA sequencing in the investigative process.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Leucemia Mieloide Aguda
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
/
Screening_studies
Límite:
Adult
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Female
/
Humans
Idioma:
Ja
Año:
2023
Tipo del documento:
Article