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dc.contributor.author
Bianchini, Michele
dc.contributor.author
de Brasi, Carlos Daniel
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Gargallo, Patricia Martha
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Gonzalez, Mariana Selena
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Bengió, Raquel
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Larripa, Irene Beatriz
dc.date.available
2018-08-16T18:35:55Z
dc.date.issued
2009-04
dc.identifier.citation
Bianchini, Michele; de Brasi, Carlos Daniel; Gargallo, Patricia Martha; Gonzalez, Mariana Selena; Bengió, Raquel; et al.; Specific assessment of BCR-ABL transcript overexpression and imatinib resistance in chronic myeloid leukemia patients; Wiley Blackwell Publishing, Inc; European Journal Of Haematology; 82; 4; 4-2009; 292-300
dc.identifier.issn
0902-4441
dc.identifier.uri
http://hdl.handle.net/11336/55974
dc.description.abstract
Imatinib mesylate has proven to be the most effective treatment in chronic myeloid leukemia. Nevertheless, imatinib resistance has raised concern and prompted interest in additional strategies to achieve disease eradication. Resistance to imatinib is mainly associated with three mechanisms: acquired mutations in the kinase domain of BCR-ABL protein, genetic amplification, and transcript overexpression of BCR-ABL rearrangement. Therefore an accurate assessment of resistance mechanism is particularly important to improve strategies to overcome resistance. In order to determine overexpression of BCR-ABL, we propose a method that correlates quantitative real time PCR and fluorescence in situ hybridization data from the same peripheral blood sample. The ratio between both methodologies permits to calculate the expression index (EI) for each patient. EI estimates the rate of BCR-ABL transcription per rearrangement. The median EI value, including all cases (n = 123), was 0.288; those cases (n = 13) included in percentile 90 showed an increment of EI above 1 Log (>2.88) with respect to the median value and were considered as cases with overexpression. We also evaluated the EIs using receiver operating characteristics curve; choosing an EI cutoff of 1.836 we obtained a sensitivity of 95% and a specificity of 61%. Using this EI cutoff value, more patients (n = 17) were included in the overexpression group. Patients within this group were resistant to imatinib and also showed a worse overall survival if compared with the remaining. © 2009 Blackwell Munksgaard.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Bcr-Abl
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Chronic Myeloid Leukemia
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Imatinib Mesylate
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Overexpression
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Treatment Resistance
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Genética Humana
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Medicina Básica
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CIENCIAS MÉDICAS Y DE LA SALUD
dc.title
Specific assessment of BCR-ABL transcript overexpression and imatinib resistance in chronic myeloid leukemia patients
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-14T13:58:43Z
dc.journal.volume
82
dc.journal.number
4
dc.journal.pagination
292-300
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Bianchini, Michele. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
dc.description.fil
Fil: de Brasi, Carlos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
dc.description.fil
Fil: Gargallo, Patricia Martha. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
dc.description.fil
Fil: Gonzalez, Mariana Selena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
dc.description.fil
Fil: Bengió, Raquel. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
dc.description.fil
Fil: Larripa, Irene Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
dc.journal.title
European Journal Of Haematology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1111/j.1600-0609.2008.01199.x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1600-0609.2008.01199.x
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