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Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases
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| Zeitschriftentitel: | British Journal of Haematology |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | British Journal of Haematology, 110, 2000, 3, S. 537-546 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
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| Schlagwörter: |
| author_facet |
Cario, Gunnar Stadt, Udo zur Reiter, Alfred Welte, Karl Sykora, Karl‐Walter Cario, Gunnar Stadt, Udo zur Reiter, Alfred Welte, Karl Sykora, Karl‐Walter |
|---|---|
| author |
Cario, Gunnar Stadt, Udo zur Reiter, Alfred Welte, Karl Sykora, Karl‐Walter |
| spellingShingle |
Cario, Gunnar Stadt, Udo zur Reiter, Alfred Welte, Karl Sykora, Karl‐Walter British Journal of Haematology Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases Hematology |
| author_sort |
cario, gunnar |
| spelling |
Cario, Gunnar Stadt, Udo zur Reiter, Alfred Welte, Karl Sykora, Karl‐Walter 0007-1048 1365-2141 Wiley Hematology http://dx.doi.org/10.1046/j.1365-2141.2000.02241.x <jats:p>Burkitt's lymphoma/Burkitt cell leukaemia (BL) is characterized by one of the reciprocal translocations involving the MYC oncogene on chromosome 8 and one of the immunoglobulin (Ig) loci on chromosomes 14, 2 or 22. In the few cell lines with the variant translocations t(2;8) and t(8;22) reported to date, the breakpoints on chromosome 8 were located downstream of MYC at a distance of up to 300 kb and more. Here, we describe three new cases with variant translocations. Fresh tumour material from paediatric patients, negative for the common translocation t(8;14), was analysed using a long‐distance (LD) polymerase chain reaction (PCR) approach. On chromosome 8, primers were derived from several different regions 3′ of MYC, and on chromosomes 2 and 22 from the constant regions of the Ig kappa (Igκ) and lambda (Igλ) genes. One translocation t(2;8) and two t(8;22) were detected. In the t(2;8) translocation, the chromosome 8 breakpoint was located 2 kb 3′ of the MYC exon 3 and the chromosome 2 breakpoint within an unrearranged Igκ locus. The breakpoints of the two translocations t(8;22) were detected 16 kb for one and 58 kb for the other downstream of MYC. Sequencing the t(8;22) translocation in one of the cases showed hypermutation of the translocated variable Vλ4b gene. The presence of hypermutated variable regions in the t(8;22) case suggests germinal centre B cells as the origin of this translocation. The t(2;8) translocation is the first description of a translocation t(2;8) involving an unrearranged Igκ gene. A mechanism different from V–J recombination and somatic hypermutation has to be proposed for this translocation.</jats:p> Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases British Journal of Haematology |
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| title |
Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_unstemmed |
Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_full |
Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_fullStr |
Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_full_unstemmed |
Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_short |
Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_sort |
variant translocations in sporadic burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| topic |
Hematology |
| url |
http://dx.doi.org/10.1046/j.1365-2141.2000.02241.x |
| publishDate |
2000 |
| physical |
537-546 |
| description |
<jats:p>Burkitt's lymphoma/Burkitt cell leukaemia (BL) is characterized by one of the reciprocal translocations involving the MYC oncogene on chromosome 8 and one of the immunoglobulin (Ig) loci on chromosomes 14, 2 or 22. In the few cell lines with the variant translocations t(2;8) and t(8;22) reported to date, the breakpoints on chromosome 8 were located downstream of MYC at a distance of up to 300 kb and more. Here, we describe three new cases with variant translocations. Fresh tumour material from paediatric patients, negative for the common translocation t(8;14), was analysed using a long‐distance (LD) polymerase chain reaction (PCR) approach. On chromosome 8, primers were derived from several different regions 3′ of MYC, and on chromosomes 2 and 22 from the constant regions of the Ig kappa (Igκ) and lambda (Igλ) genes. One translocation t(2;8) and two t(8;22) were detected. In the t(2;8) translocation, the chromosome 8 breakpoint was located 2 kb 3′ of the MYC exon 3 and the chromosome 2 breakpoint within an unrearranged Igκ locus. The breakpoints of the two translocations t(8;22) were detected 16 kb for one and 58 kb for the other downstream of MYC. Sequencing the t(8;22) translocation in one of the cases showed hypermutation of the translocated variable Vλ4b gene. The presence of hypermutated variable regions in the t(8;22) case suggests germinal centre B cells as the origin of this translocation. The t(2;8) translocation is the first description of a translocation t(2;8) involving an unrearranged Igκ gene. A mechanism different from V–J recombination and somatic hypermutation has to be proposed for this translocation.</jats:p> |
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| author | Cario, Gunnar, Stadt, Udo zur, Reiter, Alfred, Welte, Karl, Sykora, Karl‐Walter |
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| description | <jats:p>Burkitt's lymphoma/Burkitt cell leukaemia (BL) is characterized by one of the reciprocal translocations involving the MYC oncogene on chromosome 8 and one of the immunoglobulin (Ig) loci on chromosomes 14, 2 or 22. In the few cell lines with the variant translocations t(2;8) and t(8;22) reported to date, the breakpoints on chromosome 8 were located downstream of MYC at a distance of up to 300 kb and more. Here, we describe three new cases with variant translocations. Fresh tumour material from paediatric patients, negative for the common translocation t(8;14), was analysed using a long‐distance (LD) polymerase chain reaction (PCR) approach. On chromosome 8, primers were derived from several different regions 3′ of MYC, and on chromosomes 2 and 22 from the constant regions of the Ig kappa (Igκ) and lambda (Igλ) genes. One translocation t(2;8) and two t(8;22) were detected. In the t(2;8) translocation, the chromosome 8 breakpoint was located 2 kb 3′ of the MYC exon 3 and the chromosome 2 breakpoint within an unrearranged Igκ locus. The breakpoints of the two translocations t(8;22) were detected 16 kb for one and 58 kb for the other downstream of MYC. Sequencing the t(8;22) translocation in one of the cases showed hypermutation of the translocated variable Vλ4b gene. The presence of hypermutated variable regions in the t(8;22) case suggests germinal centre B cells as the origin of this translocation. The t(2;8) translocation is the first description of a translocation t(2;8) involving an unrearranged Igκ gene. A mechanism different from V–J recombination and somatic hypermutation has to be proposed for this translocation.</jats:p> |
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| institution | DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15 |
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| spelling | Cario, Gunnar Stadt, Udo zur Reiter, Alfred Welte, Karl Sykora, Karl‐Walter 0007-1048 1365-2141 Wiley Hematology http://dx.doi.org/10.1046/j.1365-2141.2000.02241.x <jats:p>Burkitt's lymphoma/Burkitt cell leukaemia (BL) is characterized by one of the reciprocal translocations involving the MYC oncogene on chromosome 8 and one of the immunoglobulin (Ig) loci on chromosomes 14, 2 or 22. In the few cell lines with the variant translocations t(2;8) and t(8;22) reported to date, the breakpoints on chromosome 8 were located downstream of MYC at a distance of up to 300 kb and more. Here, we describe three new cases with variant translocations. Fresh tumour material from paediatric patients, negative for the common translocation t(8;14), was analysed using a long‐distance (LD) polymerase chain reaction (PCR) approach. On chromosome 8, primers were derived from several different regions 3′ of MYC, and on chromosomes 2 and 22 from the constant regions of the Ig kappa (Igκ) and lambda (Igλ) genes. One translocation t(2;8) and two t(8;22) were detected. In the t(2;8) translocation, the chromosome 8 breakpoint was located 2 kb 3′ of the MYC exon 3 and the chromosome 2 breakpoint within an unrearranged Igκ locus. The breakpoints of the two translocations t(8;22) were detected 16 kb for one and 58 kb for the other downstream of MYC. Sequencing the t(8;22) translocation in one of the cases showed hypermutation of the translocated variable Vλ4b gene. The presence of hypermutated variable regions in the t(8;22) case suggests germinal centre B cells as the origin of this translocation. The t(2;8) translocation is the first description of a translocation t(2;8) involving an unrearranged Igκ gene. A mechanism different from V–J recombination and somatic hypermutation has to be proposed for this translocation.</jats:p> Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases British Journal of Haematology |
| spellingShingle | Cario, Gunnar, Stadt, Udo zur, Reiter, Alfred, Welte, Karl, Sykora, Karl‐Walter, British Journal of Haematology, Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases, Hematology |
| title | Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_full | Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_fullStr | Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_full_unstemmed | Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_short | Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_sort | variant translocations in sporadic burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| title_unstemmed | Variant translocations in sporadic Burkitt's lymphoma detected in fresh tumour material: analysis of three cases |
| topic | Hematology |
| url | http://dx.doi.org/10.1046/j.1365-2141.2000.02241.x |