author_facet Lee, Jeong N.
Giles, Fancis
Huh, Yang O
Manshouri, Taghi
O'Brien, Susan
Kantarjian, Hagop M.
Keating, Michael J.
Albitar, Maher
Lee, Jeong N.
Giles, Fancis
Huh, Yang O
Manshouri, Taghi
O'Brien, Susan
Kantarjian, Hagop M.
Keating, Michael J.
Albitar, Maher
author Lee, Jeong N.
Giles, Fancis
Huh, Yang O
Manshouri, Taghi
O'Brien, Susan
Kantarjian, Hagop M.
Keating, Michael J.
Albitar, Maher
spellingShingle Lee, Jeong N.
Giles, Fancis
Huh, Yang O
Manshouri, Taghi
O'Brien, Susan
Kantarjian, Hagop M.
Keating, Michael J.
Albitar, Maher
European Journal of Haematology
Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
Hematology
General Medicine
author_sort lee, jeong n.
spelling Lee, Jeong N. Giles, Fancis Huh, Yang O Manshouri, Taghi O'Brien, Susan Kantarjian, Hagop M. Keating, Michael J. Albitar, Maher 0902-4441 1600-0609 Wiley Hematology General Medicine http://dx.doi.org/10.1034/j.1600-0609.2003.00089.x <jats:p><jats:bold>Abstract:</jats:bold> The genetic events involved in the transformation of chronic lymphocytic leukemia (CLL) to Richter's syndrome (RS) are poorly understood. Frequently large cells are seen in the bone marrows of patients with CLL and evidence of RS. Using a laser‐capture microdissection we analyzed small and large leukemic bone marrow cells from 19 patients with RS for loss of heterozygosity (LOH) on chromosome 11 (D11S2179 at the <jats:italic>ATM</jats:italic> gene), 17 (D17S938 and D17S1852 at the TP53 site), and 20 (Plc1, D20S96, D20S110, and D20S119). Megakaryocytes were also isolated and used as a control for normal cells. Four of 15 (27.7%) informative cases showed LOH in small cells in the <jats:italic>ATM</jats:italic> gene while seven (46.7%) showed LOH in large cells. Six of 15 (40%) informative cases had LOH in chromosome 17 in small cells, and eight (53%) showed LOH in large cells. Eleven of 19 informative cases (61.1%) showed LOH in chromosome 20 in large cells, and eight (42.1%) showed LOH in small cells. RS cases with LOH at chromosome 20 were associated with marginally shorter survival rates (<jats:italic>P</jats:italic> = 0.08). Our data suggest that there are significant molecular differences between large and small cells in patients with CLL. Further analysis of the genes on these chromosomes may provide new insight into our understanding of the transformation of small CLL cells to large (Richter) cells.</jats:p> Molecular differences between small and large cells in patients with chronic lymphocytic leukemia European Journal of Haematology
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title Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_unstemmed Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_full Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_fullStr Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_full_unstemmed Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_short Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_sort molecular differences between small and large cells in patients with chronic lymphocytic leukemia
topic Hematology
General Medicine
url http://dx.doi.org/10.1034/j.1600-0609.2003.00089.x
publishDate 2003
physical 235-242
description <jats:p><jats:bold>Abstract:</jats:bold> The genetic events involved in the transformation of chronic lymphocytic leukemia (CLL) to Richter's syndrome (RS) are poorly understood. Frequently large cells are seen in the bone marrows of patients with CLL and evidence of RS. Using a laser‐capture microdissection we analyzed small and large leukemic bone marrow cells from 19 patients with RS for loss of heterozygosity (LOH) on chromosome 11 (D11S2179 at the <jats:italic>ATM</jats:italic> gene), 17 (D17S938 and D17S1852 at the TP53 site), and 20 (Plc1, D20S96, D20S110, and D20S119). Megakaryocytes were also isolated and used as a control for normal cells. Four of 15 (27.7%) informative cases showed LOH in small cells in the <jats:italic>ATM</jats:italic> gene while seven (46.7%) showed LOH in large cells. Six of 15 (40%) informative cases had LOH in chromosome 17 in small cells, and eight (53%) showed LOH in large cells. Eleven of 19 informative cases (61.1%) showed LOH in chromosome 20 in large cells, and eight (42.1%) showed LOH in small cells. RS cases with LOH at chromosome 20 were associated with marginally shorter survival rates (<jats:italic>P</jats:italic> = 0.08). Our data suggest that there are significant molecular differences between large and small cells in patients with CLL. Further analysis of the genes on these chromosomes may provide new insight into our understanding of the transformation of small CLL cells to large (Richter) cells.</jats:p>
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author Lee, Jeong N., Giles, Fancis, Huh, Yang O, Manshouri, Taghi, O'Brien, Susan, Kantarjian, Hagop M., Keating, Michael J., Albitar, Maher
author_facet Lee, Jeong N., Giles, Fancis, Huh, Yang O, Manshouri, Taghi, O'Brien, Susan, Kantarjian, Hagop M., Keating, Michael J., Albitar, Maher, Lee, Jeong N., Giles, Fancis, Huh, Yang O, Manshouri, Taghi, O'Brien, Susan, Kantarjian, Hagop M., Keating, Michael J., Albitar, Maher
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container_issue 4
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container_title European Journal of Haematology
container_volume 71
description <jats:p><jats:bold>Abstract:</jats:bold> The genetic events involved in the transformation of chronic lymphocytic leukemia (CLL) to Richter's syndrome (RS) are poorly understood. Frequently large cells are seen in the bone marrows of patients with CLL and evidence of RS. Using a laser‐capture microdissection we analyzed small and large leukemic bone marrow cells from 19 patients with RS for loss of heterozygosity (LOH) on chromosome 11 (D11S2179 at the <jats:italic>ATM</jats:italic> gene), 17 (D17S938 and D17S1852 at the TP53 site), and 20 (Plc1, D20S96, D20S110, and D20S119). Megakaryocytes were also isolated and used as a control for normal cells. Four of 15 (27.7%) informative cases showed LOH in small cells in the <jats:italic>ATM</jats:italic> gene while seven (46.7%) showed LOH in large cells. Six of 15 (40%) informative cases had LOH in chromosome 17 in small cells, and eight (53%) showed LOH in large cells. Eleven of 19 informative cases (61.1%) showed LOH in chromosome 20 in large cells, and eight (42.1%) showed LOH in small cells. RS cases with LOH at chromosome 20 were associated with marginally shorter survival rates (<jats:italic>P</jats:italic> = 0.08). Our data suggest that there are significant molecular differences between large and small cells in patients with CLL. Further analysis of the genes on these chromosomes may provide new insight into our understanding of the transformation of small CLL cells to large (Richter) cells.</jats:p>
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spelling Lee, Jeong N. Giles, Fancis Huh, Yang O Manshouri, Taghi O'Brien, Susan Kantarjian, Hagop M. Keating, Michael J. Albitar, Maher 0902-4441 1600-0609 Wiley Hematology General Medicine http://dx.doi.org/10.1034/j.1600-0609.2003.00089.x <jats:p><jats:bold>Abstract:</jats:bold> The genetic events involved in the transformation of chronic lymphocytic leukemia (CLL) to Richter's syndrome (RS) are poorly understood. Frequently large cells are seen in the bone marrows of patients with CLL and evidence of RS. Using a laser‐capture microdissection we analyzed small and large leukemic bone marrow cells from 19 patients with RS for loss of heterozygosity (LOH) on chromosome 11 (D11S2179 at the <jats:italic>ATM</jats:italic> gene), 17 (D17S938 and D17S1852 at the TP53 site), and 20 (Plc1, D20S96, D20S110, and D20S119). Megakaryocytes were also isolated and used as a control for normal cells. Four of 15 (27.7%) informative cases showed LOH in small cells in the <jats:italic>ATM</jats:italic> gene while seven (46.7%) showed LOH in large cells. Six of 15 (40%) informative cases had LOH in chromosome 17 in small cells, and eight (53%) showed LOH in large cells. Eleven of 19 informative cases (61.1%) showed LOH in chromosome 20 in large cells, and eight (42.1%) showed LOH in small cells. RS cases with LOH at chromosome 20 were associated with marginally shorter survival rates (<jats:italic>P</jats:italic> = 0.08). Our data suggest that there are significant molecular differences between large and small cells in patients with CLL. Further analysis of the genes on these chromosomes may provide new insight into our understanding of the transformation of small CLL cells to large (Richter) cells.</jats:p> Molecular differences between small and large cells in patients with chronic lymphocytic leukemia European Journal of Haematology
spellingShingle Lee, Jeong N., Giles, Fancis, Huh, Yang O, Manshouri, Taghi, O'Brien, Susan, Kantarjian, Hagop M., Keating, Michael J., Albitar, Maher, European Journal of Haematology, Molecular differences between small and large cells in patients with chronic lymphocytic leukemia, Hematology, General Medicine
title Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_full Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_fullStr Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_full_unstemmed Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_short Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_sort molecular differences between small and large cells in patients with chronic lymphocytic leukemia
title_unstemmed Molecular differences between small and large cells in patients with chronic lymphocytic leukemia
topic Hematology, General Medicine
url http://dx.doi.org/10.1034/j.1600-0609.2003.00089.x