[Trisomy of chromosome 8 in Ph-negative cells of the bone marrow in patients with chronic myeloid leukemia treated with inhibitors of BCR-ABL tyrosine kinases].

Autor:	Turkina AG, Domracheva EV, Vorontsova AV, Aseeva EA, Vinogradova OIu, Stakhina OV, Gusarova GA, Diagileva OA, Semenova EA, Vakhrusheva MV, Kolosheĭnova TI, Abakumov EM, Chelysheva EIu, Goriacheva SR, Ivanova TV, Zakharova ES, Kolosova LIu, Zakharova AV, Naumova IN, Diachenko LV, Kulikov SM, Kovaleva LG, Khoroshko ND
Jazyk:	ruština
Zdroj:	Terapevticheskii arkhiv [Ter Arkh] 2009; Vol. 81 (7), pp. 29-36.
Abstrakt:	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.
Databáze:	MEDLINE
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