A clinical and laboratory study on acute myeloid leukemia with t(6;9)(p23;q34) / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
;
(6): 34-37, 2010.
Article
in Chinese
| WPRIM
| ID: wpr-349044
ABSTRACT
<p><b>OBJECTIVE</b>To explore the clinical and laboratory features of 6 cases of acute myeloid leukemia (AML) with t(6;9)(p23;q34).</p><p><b>METHODS</b>Chromosome preparation of bone marrow cells was performed with regular method. R-banding by heating using Giemsa banding technique (RHG) was used for karyotype analysis. The immunoprofile was studied by flow cytometry (FCM) using a panel of monoclonal antibodies. Chromosome painting was performed by using whole chromosome paint probes for chromosomes 6 and 9 in all the 6 cases. The expression of fusion gene DEK/CAN and FLT3-ITD mutation were analyzed by reverse transcription-PCR(RT-PCR).</p><p><b>RESULTS</b>The t(6;9)(p23;q34) was found in all the 6 cases including 4 cases of M2 and 2 cases of M4. Blast cells were positive for CD13 and CD33 in 6 patients, for HLA-DR in 4 patients, for CD34 and CD117 in 3 cases, for CD38 or CD15 each in 1 case, respectively. A reciprocal translocation between chromosome 6 and 9 was confirmed by chromosome painting technique in the 6 cases. The DEK/CAN fusion gene was found in all the 6 cases, FLT3-ITD mutation was detected in three of them. Follow-up showed that 3 patients died with a survival time of 3 months, 5 months and 6 months, respectively. The other three obtained complete remission and are still alive.</p><p><b>CONCLUSION</b>The t(6;9)(p23;q34) is a rare recurrent abnormity. AML with t(6;9)(p23;q34) has unique clinical and laboratory features and its prognosis is poor in most cases.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Translocation, Genetic
/
Chromosomes, Human, Pair 6
/
Chromosomes, Human, Pair 9
/
Antigens, Differentiation, Myelomonocytic
/
Leukemia, Myeloid, Acute
/
Antigens, CD
/
CD13 Antigens
/
Proto-Oncogene Proteins c-kit
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Antigens, CD34
/
Sialic Acid Binding Ig-like Lectin 3
Type of study:
Prognostic study
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
Chinese
Journal:
Chinese Journal of Medical Genetics
Year:
2010
Type:
Article
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