Clinico-hematological and molecular genetic variability of acute myeloid leukemia with CD7 expression on blasts cells

The objective of the study was to evaluate the heterogeneity of patients with acute myeloid leukemia with CD7 aberrant expression. The retrospective analysis of 31 AML patients’ laboratory and clinical data was performed. Marked morphological, cytogenetic, and molecular heterogeneity of AML with CD7 coexpression was established. Also, it was found that these patients could be stratified into groups by overall survival. Four patients with t(8;21) or t(15;17) translocations or inv(16) inversion were followed-up for 53, 33, 11, and 10 months, respectively. The median of OS was not reached among the patients with t(8;21), t(15;15), and inv(16). The median OS among 10 patients with normal karyotype with no FLT3-ITD mutation was 17 months. The median OS among 17 patients with other genetic abnormalities including 7 patients with normal karyotype and FLT3-ITD mutation was 8 months; p = 0.033. We conclude that CD7 expression on AML blast cells is not an independent prognostic factor.

• S.V. Gritsayev Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация
• Z.V. Chubukina Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация
• I.S. Martynkevich Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация
• I.I. Kostroma Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация
• T.V. Glazanova Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация
• Ye.V. Petrova Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация
• L.S. Martynenko Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация
• S.A. Tiranova Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация
• N.A. Potikhonova Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация
• I.S. Zyuzgin Leningrad Regional Hospital, Saint Petersburg, Russian Federation ; Ленинградская клиническая областная больница, Санкт-Петербург, Российская Федерация
• L.N. Bubnova Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация
• K.M. Abdulkadyrov Russian Research Institute of Hematology and Transfusiology, FMBA, Saint Petersburg, Russian Federation ; ФГБУ «Российский научно-исследовательский институт гематологии и трансфузиологии Федерального медико-биологического агентства», Санкт-Петербург, Российская Федерация

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