author_facet Haferlach, Claudia
Mecucci, Cristina
Schnittger, Susanne
Kohlmann, Alexander
Mancini, Marco
Cuneo, Antonio
Testoni, Nicoletta
Rege-Cambrin, Giovanna
Santucci, Antonella
Vignetti, Marco
Fazi, Paola
Martelli, Maria Paola
Haferlach, Torsten
Falini, Brunangelo
Haferlach, Claudia
Mecucci, Cristina
Schnittger, Susanne
Kohlmann, Alexander
Mancini, Marco
Cuneo, Antonio
Testoni, Nicoletta
Rege-Cambrin, Giovanna
Santucci, Antonella
Vignetti, Marco
Fazi, Paola
Martelli, Maria Paola
Haferlach, Torsten
Falini, Brunangelo
author Haferlach, Claudia
Mecucci, Cristina
Schnittger, Susanne
Kohlmann, Alexander
Mancini, Marco
Cuneo, Antonio
Testoni, Nicoletta
Rege-Cambrin, Giovanna
Santucci, Antonella
Vignetti, Marco
Fazi, Paola
Martelli, Maria Paola
Haferlach, Torsten
Falini, Brunangelo
spellingShingle Haferlach, Claudia
Mecucci, Cristina
Schnittger, Susanne
Kohlmann, Alexander
Mancini, Marco
Cuneo, Antonio
Testoni, Nicoletta
Rege-Cambrin, Giovanna
Santucci, Antonella
Vignetti, Marco
Fazi, Paola
Martelli, Maria Paola
Haferlach, Torsten
Falini, Brunangelo
Blood
AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
Cell Biology
Hematology
Immunology
Biochemistry
author_sort haferlach, claudia
spelling Haferlach, Claudia Mecucci, Cristina Schnittger, Susanne Kohlmann, Alexander Mancini, Marco Cuneo, Antonio Testoni, Nicoletta Rege-Cambrin, Giovanna Santucci, Antonella Vignetti, Marco Fazi, Paola Martelli, Maria Paola Haferlach, Torsten Falini, Brunangelo 0006-4971 1528-0020 American Society of Hematology Cell Biology Hematology Immunology Biochemistry http://dx.doi.org/10.1182/blood-2009-01-197871 <jats:p>Acute myeloid leukemia (AML) with mutated NPM1 usually carries normal karyotype (NK), but it may harbor chromosomal aberrations whose significance remains unclear. We addressed this question in 631 AML patients with mutated/cytoplasmic NPM1. An abnormal karyotype (AK) was present in 93 of 631 cases (14.7%), the most frequent abnormalities being +8, +4, −Y, del(9q), +21. Chromosome aberrations in NPM1-mutated AML were similar to, but occurred less frequently than additional chromosome changes found in other AML with recurrent cytogenetic abnormalities according to WHO classification. Four of the 31 NPM1-mutated AML patients karyotyped at different time points had NK at diagnosis but AK at relapse: del(9q) (n = 2), t(2;11) (n = 1), inv(12) (n = 1). NPM1-mutated AML with NK or AK showed overlapping morphologic, immunophenotypic (CD34 negativity), and gene expression profile (down-regulation of CD34 and up-regulation of HOX genes). No difference in survival was observed among NPM1-mutated AML patients independently of whether they carried a NK or an AK, the NPM1-mutated/FLT3-ITD negative cases showing the better prognosis. Findings in our patients point to chromosomal aberrations as secondary events, reinforce the concept that NPM1 mutation is a founder genetic lesion, and indicate that NPM1-mutated AML should be clinically handled as one entity, irrespective of the karyotype.</jats:p> AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features Blood
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title AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_unstemmed AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_full AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_fullStr AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_full_unstemmed AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_short AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_sort aml with mutated npm1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
topic Cell Biology
Hematology
Immunology
Biochemistry
url http://dx.doi.org/10.1182/blood-2009-01-197871
publishDate 2009
physical 3024-3032
description <jats:p>Acute myeloid leukemia (AML) with mutated NPM1 usually carries normal karyotype (NK), but it may harbor chromosomal aberrations whose significance remains unclear. We addressed this question in 631 AML patients with mutated/cytoplasmic NPM1. An abnormal karyotype (AK) was present in 93 of 631 cases (14.7%), the most frequent abnormalities being +8, +4, −Y, del(9q), +21. Chromosome aberrations in NPM1-mutated AML were similar to, but occurred less frequently than additional chromosome changes found in other AML with recurrent cytogenetic abnormalities according to WHO classification. Four of the 31 NPM1-mutated AML patients karyotyped at different time points had NK at diagnosis but AK at relapse: del(9q) (n = 2), t(2;11) (n = 1), inv(12) (n = 1). NPM1-mutated AML with NK or AK showed overlapping morphologic, immunophenotypic (CD34 negativity), and gene expression profile (down-regulation of CD34 and up-regulation of HOX genes). No difference in survival was observed among NPM1-mutated AML patients independently of whether they carried a NK or an AK, the NPM1-mutated/FLT3-ITD negative cases showing the better prognosis. Findings in our patients point to chromosomal aberrations as secondary events, reinforce the concept that NPM1 mutation is a founder genetic lesion, and indicate that NPM1-mutated AML should be clinically handled as one entity, irrespective of the karyotype.</jats:p>
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author Haferlach, Claudia, Mecucci, Cristina, Schnittger, Susanne, Kohlmann, Alexander, Mancini, Marco, Cuneo, Antonio, Testoni, Nicoletta, Rege-Cambrin, Giovanna, Santucci, Antonella, Vignetti, Marco, Fazi, Paola, Martelli, Maria Paola, Haferlach, Torsten, Falini, Brunangelo
author_facet Haferlach, Claudia, Mecucci, Cristina, Schnittger, Susanne, Kohlmann, Alexander, Mancini, Marco, Cuneo, Antonio, Testoni, Nicoletta, Rege-Cambrin, Giovanna, Santucci, Antonella, Vignetti, Marco, Fazi, Paola, Martelli, Maria Paola, Haferlach, Torsten, Falini, Brunangelo, Haferlach, Claudia, Mecucci, Cristina, Schnittger, Susanne, Kohlmann, Alexander, Mancini, Marco, Cuneo, Antonio, Testoni, Nicoletta, Rege-Cambrin, Giovanna, Santucci, Antonella, Vignetti, Marco, Fazi, Paola, Martelli, Maria Paola, Haferlach, Torsten, Falini, Brunangelo
author_sort haferlach, claudia
container_issue 14
container_start_page 3024
container_title Blood
container_volume 114
description <jats:p>Acute myeloid leukemia (AML) with mutated NPM1 usually carries normal karyotype (NK), but it may harbor chromosomal aberrations whose significance remains unclear. We addressed this question in 631 AML patients with mutated/cytoplasmic NPM1. An abnormal karyotype (AK) was present in 93 of 631 cases (14.7%), the most frequent abnormalities being +8, +4, −Y, del(9q), +21. Chromosome aberrations in NPM1-mutated AML were similar to, but occurred less frequently than additional chromosome changes found in other AML with recurrent cytogenetic abnormalities according to WHO classification. Four of the 31 NPM1-mutated AML patients karyotyped at different time points had NK at diagnosis but AK at relapse: del(9q) (n = 2), t(2;11) (n = 1), inv(12) (n = 1). NPM1-mutated AML with NK or AK showed overlapping morphologic, immunophenotypic (CD34 negativity), and gene expression profile (down-regulation of CD34 and up-regulation of HOX genes). No difference in survival was observed among NPM1-mutated AML patients independently of whether they carried a NK or an AK, the NPM1-mutated/FLT3-ITD negative cases showing the better prognosis. Findings in our patients point to chromosomal aberrations as secondary events, reinforce the concept that NPM1 mutation is a founder genetic lesion, and indicate that NPM1-mutated AML should be clinically handled as one entity, irrespective of the karyotype.</jats:p>
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imprint_str_mv American Society of Hematology, 2009
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spelling Haferlach, Claudia Mecucci, Cristina Schnittger, Susanne Kohlmann, Alexander Mancini, Marco Cuneo, Antonio Testoni, Nicoletta Rege-Cambrin, Giovanna Santucci, Antonella Vignetti, Marco Fazi, Paola Martelli, Maria Paola Haferlach, Torsten Falini, Brunangelo 0006-4971 1528-0020 American Society of Hematology Cell Biology Hematology Immunology Biochemistry http://dx.doi.org/10.1182/blood-2009-01-197871 <jats:p>Acute myeloid leukemia (AML) with mutated NPM1 usually carries normal karyotype (NK), but it may harbor chromosomal aberrations whose significance remains unclear. We addressed this question in 631 AML patients with mutated/cytoplasmic NPM1. An abnormal karyotype (AK) was present in 93 of 631 cases (14.7%), the most frequent abnormalities being +8, +4, −Y, del(9q), +21. Chromosome aberrations in NPM1-mutated AML were similar to, but occurred less frequently than additional chromosome changes found in other AML with recurrent cytogenetic abnormalities according to WHO classification. Four of the 31 NPM1-mutated AML patients karyotyped at different time points had NK at diagnosis but AK at relapse: del(9q) (n = 2), t(2;11) (n = 1), inv(12) (n = 1). NPM1-mutated AML with NK or AK showed overlapping morphologic, immunophenotypic (CD34 negativity), and gene expression profile (down-regulation of CD34 and up-regulation of HOX genes). No difference in survival was observed among NPM1-mutated AML patients independently of whether they carried a NK or an AK, the NPM1-mutated/FLT3-ITD negative cases showing the better prognosis. Findings in our patients point to chromosomal aberrations as secondary events, reinforce the concept that NPM1 mutation is a founder genetic lesion, and indicate that NPM1-mutated AML should be clinically handled as one entity, irrespective of the karyotype.</jats:p> AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features Blood
spellingShingle Haferlach, Claudia, Mecucci, Cristina, Schnittger, Susanne, Kohlmann, Alexander, Mancini, Marco, Cuneo, Antonio, Testoni, Nicoletta, Rege-Cambrin, Giovanna, Santucci, Antonella, Vignetti, Marco, Fazi, Paola, Martelli, Maria Paola, Haferlach, Torsten, Falini, Brunangelo, Blood, AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features, Cell Biology, Hematology, Immunology, Biochemistry
title AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_full AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_fullStr AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_full_unstemmed AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_short AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_sort aml with mutated npm1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
title_unstemmed AML with mutated NPM1 carrying a normal or aberrant karyotype show overlapping biologic, pathologic, immunophenotypic, and prognostic features
topic Cell Biology, Hematology, Immunology, Biochemistry
url http://dx.doi.org/10.1182/blood-2009-01-197871