Chromosome abnormalities additional to the Philadelphia chromosome at the diagnosis of chronic myelogenous leukemia: pathogenetic and prognostic implications

Abstract Additional chromosome abnormalities (ACAs) occur in less than 10% of cases at diagnosis of Philadelphia chromosome (Ph)-positive chronic myelogenous leukemia (CML). In some cases, on the basis of the persistence of the ACAs in Ph-negative cells after response to imatinib, a secondary origin...

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Veröffentlicht in:Cancer genetics and cytogenetics 2010-06, Vol.199 (2), p.76-80
Hauptverfasser: Zaccaria, Alfonso, Testoni, Nicoletta, Valenti, Anna Maria, Luatti, Simona, Tonelli, Michela, Marzocchi, Giulia, Cipriani, Raffaella, Baldazzi, Carmen, Giannini, Barbara, Stacchini, Monica, Gamberini, Carla, Castagnetti, Fausto, Rosti, Gianantonio, Azzena, Annalisa, Cavazzini, Francesco, Cianciulli, Anna Maria, Dalsass, Alessia, Donti, Emilio, Giugliano, Emilia, Gozzetti, Alessandro, Grimoldi, Maria Grazia, Ronconi, Sonia, Santoro, Alessandra, Spedicato, Francesco, Zanatta, Lucia, Baccarani, Michele
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container_issue 2
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container_title Cancer genetics and cytogenetics
container_volume 199
creator Zaccaria, Alfonso
Testoni, Nicoletta
Valenti, Anna Maria
Luatti, Simona
Tonelli, Michela
Marzocchi, Giulia
Cipriani, Raffaella
Baldazzi, Carmen
Giannini, Barbara
Stacchini, Monica
Gamberini, Carla
Castagnetti, Fausto
Rosti, Gianantonio
Azzena, Annalisa
Cavazzini, Francesco
Cianciulli, Anna Maria
Dalsass, Alessia
Donti, Emilio
Giugliano, Emilia
Gozzetti, Alessandro
Grimoldi, Maria Grazia
Ronconi, Sonia
Santoro, Alessandra
Spedicato, Francesco
Zanatta, Lucia
Baccarani, Michele
description Abstract Additional chromosome abnormalities (ACAs) occur in less than 10% of cases at diagnosis of Philadelphia chromosome (Ph)-positive chronic myelogenous leukemia (CML). In some cases, on the basis of the persistence of the ACAs in Ph-negative cells after response to imatinib, a secondary origin of the Ph chromosome has been demonstrated. In this study, the possible prognostic value of this phenomenon was evaluated. Thirty-six Ph-positive CML patients were included in the study. In six patients, ACAs persisted after the disappearance of the Ph. A complete cytogenetic response (CCR) was obtained in five of these six patients, and five of six also had a high Sokal score. In all the other cases, ACAs disappeared together (in cases of response to therapy with imatinib) or persisted with the Ph (in cases of no response to imatinib). In the former cases, the primary origin of the Ph was demonstrated. CCR was obtained in 22 cases (17 with low to intermediate Sokal scores), while no response was observed in 8 patients (5 with a high Sokal score). Sokal score seems to maintain its prognostic value for patients in whom the Ph occurs as a primary event, but not in those in whom it occurs as a secondary one.
doi_str_mv 10.1016/j.cancergencyto.2010.02.003
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In some cases, on the basis of the persistence of the ACAs in Ph-negative cells after response to imatinib, a secondary origin of the Ph chromosome has been demonstrated. In this study, the possible prognostic value of this phenomenon was evaluated. Thirty-six Ph-positive CML patients were included in the study. In six patients, ACAs persisted after the disappearance of the Ph. A complete cytogenetic response (CCR) was obtained in five of these six patients, and five of six also had a high Sokal score. In all the other cases, ACAs disappeared together (in cases of response to therapy with imatinib) or persisted with the Ph (in cases of no response to imatinib). In the former cases, the primary origin of the Ph was demonstrated. CCR was obtained in 22 cases (17 with low to intermediate Sokal scores), while no response was observed in 8 patients (5 with a high Sokal score). 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In some cases, on the basis of the persistence of the ACAs in Ph-negative cells after response to imatinib, a secondary origin of the Ph chromosome has been demonstrated. In this study, the possible prognostic value of this phenomenon was evaluated. Thirty-six Ph-positive CML patients were included in the study. In six patients, ACAs persisted after the disappearance of the Ph. A complete cytogenetic response (CCR) was obtained in five of these six patients, and five of six also had a high Sokal score. In all the other cases, ACAs disappeared together (in cases of response to therapy with imatinib) or persisted with the Ph (in cases of no response to imatinib). In the former cases, the primary origin of the Ph was demonstrated. CCR was obtained in 22 cases (17 with low to intermediate Sokal scores), while no response was observed in 8 patients (5 with a high Sokal score). Sokal score seems to maintain its prognostic value for patients in whom the Ph occurs as a primary event, but not in those in whom it occurs as a secondary one.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>20471509</pmid><doi>10.1016/j.cancergencyto.2010.02.003</doi><tpages>5</tpages></addata></record>
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subjects Adult
Aged
Aged, 80 and over
Antineoplastic Agents - therapeutic use
Benzamides
Chromosome Aberrations
Female
Hematology, Oncology and Palliative Medicine
Humans
Imatinib Mesylate
Karyotyping
Leukemia, Myelogenous, Chronic, BCR-ABL Positive - diagnosis
Leukemia, Myelogenous, Chronic, BCR-ABL Positive - drug therapy
Leukemia, Myelogenous, Chronic, BCR-ABL Positive - genetics
Male
Medical Education
Middle Aged
Philadelphia Chromosome
Piperazines - therapeutic use
Protein-Tyrosine Kinases - antagonists & inhibitors
Pyrimidines - therapeutic use
Remission Induction
Treatment Outcome
title Chromosome abnormalities additional to the Philadelphia chromosome at the diagnosis of chronic myelogenous leukemia: pathogenetic and prognostic implications
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