Trisomy of chromosome 8 in Ph-negative cells of the bone marrow in patients with chronic myeloid leukemia treated with inhibitors of BCR-ABL tyrosinkinases

Aim. To analyse clinical implications of chromosome 8 trisomy in Ph-negative cells of the bone marrow in patients with chronic myeloid leukemia (CML) treated with inhibitors of tyrosinkinases (ITK). Material and methods. A total of 386 patients with CML (chronic phase - 288, acceleration phase - 77)...

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Published in:	Terapevtic̆eskii arhiv Vol. 81; no. 7; pp. 29 - 36
Main Authors:	Anna Grigor'evna Turkina, Elena Vasil'evna Domracheva, Aleksandra Valer'evna Vorontsova, Elena Aleksandrovna Aseeva, Ol'ga Yur'evna Vinogradova, Ol'ga Veniaminovna Stakhina, Galina Anatol'evna Gusarova, Ol'ga Arkad'evna Dyagileva, Elena Aleksandrovna Semenova, Marina Vasil'evna Vakhrusheva, Tamara Ivanovna Kolosheynova, Evgeniy Mikhaylovich Abakumov, Ekaterina Yur'evna Chelysheva, Svetlana Rudol'fovna Goryacheva, Tat'yana Vladimirovna Ivanova, Elena Stanislavovna Zakharova, Lyubov' Yur'evna Kolosova, Adel' Vladimirovna Zakharova, Irina Nikolaevna Naumova, Larisa Vladimirovna Dyachenko, Sergey Mikhaylovich Kulikov, Lidiya Grigor'evna Kovaleva, Nina Dmitrievna Khoroshko, A G Turkina, E V Domracheva, A V Vorontsova, E A Aseeva, O Yu Vinogradova, O V Stakhina, G A Gusarova, O A Dyagileva, E A Semenova, M V Vakhrusheva, T I Kolosheinova, E M Abakumov, E Yu Chelysheva, S R Goryacheva, T V Ivanova, E S Zakharova, L Yu Kolosova, A V Zakharova, I N Naumova, L V Dyachenko, S M Kulikov, L G Kovaleva, N D Khoroshko
Format:	Journal Article
Language:	Russian
Published:	"Consilium Medicum" Publishing house 01-07-2009
Subjects:	chromosome 8 trisomy chronic myeloid leukemia inhibitors of bcr-abl tyrosinkinase ph-negative cells
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Summary:	Aim. To analyse clinical implications of chromosome 8 trisomy in Ph-negative cells of the bone marrow in patients with chronic myeloid leukemia (CML) treated with inhibitors of tyrosinkinases (ITK). Material and methods. A total of 386 patients with CML (chronic phase - 288, acceleration phase - 77) received imatinib (400-800 mg/day). Because of resistance and/or intolerance some patients were switched to ITK II (nilotinib, dasatinib, bozutinib). This study included 8 CML patients (7 in a chronic phase, 1 in acceleration phase) treated with BCR-ABL ITK inhibitors of the first (imatinib) and the second line (ITK-II). The standard cytogenetic examination, on demand - investigation of the interphase nuclei with FISH, in some cases morphological, cytochemical and histological examinations of the bone marrow were made. Results. The existence of a Ph-negative clone with trisomy of chromosome 8 had no negative effect on the course of the disease. The patients showed a stable hematological and cytogenetic response and no need in changing treatment policy. In long-term follow-up Ph-negative clone with trisomy of the chromosome 8 persisted without a clear trend to rise in most patients. Conclusion. Detection of a Ph-negative clone with chromosome 8 trisomy at early stages suggests parallel existence of Ph-positive and Ph-negative clones. None of the patients had myelodisplasia.
ISSN:	0040-3660 2309-5342