(CANCER RESEARCH 49, 1275-1281, March 1. 1989] Nonrandom Rearrangement of Chromosome 14 at Band q32.33 in Human Lymphoid Malignancies with Mature B-Cell Phenotype1 Kazuhiro Nishida,2 Masafumi Taniwaki, Shinichi Misawa, and Tatsuo Abe Third Department of Medicine (K. M., M. T., S. M] and Department of Hygiene [T. A.], Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602, Japan ABSTRACT Chromosomes were studied in 61 patients with differentiated B-cell malignancies including 21 with non-Hodgkin's lymphoma (NHL), three with hairy cell leukemia (HCL), eight with Waldenstrom's macroglobulinemia (YVM),and 29 with plasma cell disorder. Chromosomally abnor mal clones were identified in 35 of 61 patients studied: all with NHL, all with HCL, three of eight with WM, and eight of 29 with plasma cell disorder. The most recurrent chromosomal abnormality, observed in 26 of the 35 patients whose chromosomes were abnormal, was a re arrangement involving chromosome 14, in which an additional segment was attached at band 32 in the long arm to form a 14q+ marker chromosome. This rearrangement was seen in 17 patients with NHL, three with HCL, one with WM, and five with plasma cell disorder. In NHL, the rearrangement correlates with histológica!subclasses: t(14;18) in all four patients with malignant lymphoma (MI Hollimlar. mixed small cleaved and large cell; t(8;14) or its variant form, t(8;22), in all six with Ml .-small noncleaved cell; and t(ll;14) in two of three with Ml diffuse, mixed small and large cell. A t(14;18) was also found in each patient with Ml -diffusi-, large cell, WM, and multiple myeloma, and a variant three-way translocation, t(5;18;14) (ql3;q21;q32), in one with ML-diffuse, small cleaved cell. The donor sites for these I4q+ were assigned to oncogene loci: c-mir (8q24), bcl-l (1 Iql3), and hcl-2 (18q21). Moreover, the donor sites were also located near ¡mmunoglobulinlight chain gene loci in each patient with leukemic ML-diffuse, mixed small and large cell, 1(2:1-1) (pl3;q32.3), and HCL, t(14;22Xq32.3;qll.2). These findings suggest that chimeric DNA formation, not only between an immunoglobulin gene and a certain oncogene, but also between the IgH gene and one of the IgL genes may be potentially relevant in malignant B-cell proliferation. INTRODUCTION Cytogenetic studies have disclosed a close association of specific chromosomal translocations with histológica! classifi cation in B-cell lymphoma: t(8;14) in Burkitt's lymphoma, t(14;18) in follicular lymphoma, and t(ll;14) in diffuse lym phoma (1, 2). However, these translocations have also been observed in other B-cell malignancies including ALL,3 CLL, and MM (3-5). Apart from morphological classifications of lymphoma and leukemia, immunological studies of tumor cells using mono clonal antibodies make it possible to classify B-cell neoplasms to a certain stage of differentiation. However, the morphologi cal types and immunological findings are not concordant in many instances. The morphological, immunological, and cyto- genetic observations for ALL have been uniformly summarized to provide clinicians with a series of guidelines to identify these subtypes and to manage these diseases (6). In the present study, the chromosomes were examined in 61 patients with B-cell malignancies. Among the clonal karyotypic changes observed in 35 patients, a rearrangement of chromo some 14 at band q32 was detected in 26. The 14q+ marker chromosome resulted from a variety of reciprocal translocations and the donor sites for the 14q+ chromosome specified the histológica! types of B-cell malignancies. Therefore, chromo some rearrangements may have a significant role in diagnosing B-cell malignancies, and may also be used to predict prognosis. In addition, molecular genetic studies on these specific re arrangements may reveal the activation of cellular oncogenes that were found in some B-cell malignancies. MATERIALS AND METHODS Patients. Chromosome studies of neoplastic B-cells were performed in 21 patients with NHL (10 males and 11 females), three with HCL (two males and one female), eight with WM (five males and three females), and 29 with PCD (16 males and 13 females) between January 1982 and December 1987. All 61 patients were diagnosed histologically, or hematologically, and immunologically. A histological diagnosis was based on the findings of biopsied lymph nodes or tumor tissues (21 patients with NHL and one each with WM and PCM) according to the classification proposed by the Non-Hodgkin's Lymphoma Pathologic Classification Project (7). Immunologically, all patients were studied for serum M-protein and urine Bence Jones protein by an electrophoretic study. In all patients with NHL (Cases 1-21), all with HCL (Cases 22-24), one with WM (Case 30), and three with PCD (Cases 53, 60, and 61), immunological phenotyping was done on single cell suspensions using a panel of monoclonal antibodies and monospecific antisera against heavy and light chains. Cytogenetic Studies. Chromosome analyses were performed as de scribed previously (8,9). Briefly, a minced cell suspension, bone marrow aspirate, blood, or peritoneal or pleural fluid was dispersed in 10 ml of RPMI 1640 medium supplemented with 15% fetal calf serum at a final concentration of 1 x IO6 cells/ml. The cells were cultured at 37°Cfor 24 or 48 h with 5% CO2 in humidified air, and then exposed to Colcemid (0.05 Mg/ml) for 60 min. For high resolution banding analysis, the cultured cells were exposed to 10 ^g/ml of ethidium bromide (Sigma) for the last 2 h of culture, and then treated with 0.05 Mg/ml of Colcemid for 15 min. The cells were processed in 0.075 M potassium chloride for 20 min, and fixed with methanol:glacial acetic acid (3:1) and chromo some preparations were made by an ordinary air drying method. In two Received 8/18/88: accepted 12/6/88. The costs of publication of this article were defrayed in part by the payment patients with HCL (Cases 23 and 24), the cultures of neoplastic cells of page charges. This article must therefore be hereby marked advertisement in were exposed to the B-cell mitogen, protein A, of Staphylococcus aureus accordance with 18 U.S.C. Section 1734 solely to indicate this fact. 1This work was supported in part by Grants-in-Aid from the Ministry of strain Cowan 1 (STA) (10) (final concentration, 0.01%), and harvested by the standard procedure after 24 h of incubation. G-banding with the Health and Welfare, and the Ministry of Education, Science and Culture of Japan. 2 To whom requests for reprints should be addressed. trypsin-Giemsa method was done in all instances. Special staining 3The abbreviations used are: ALL, acute lymphoblastic leukemia: NHL, nontechniques, i.e., R, C, and Q banding, were done with base specific Hodgkin's lymphoma; ML. malignant lymphoma; SL, small lymphocytic; FM, antibiotics and fluorochromes of chromomycin A3, distamycin A, 4'-6follicular, mixed small cleaved and large cell; FL, follicular, predominantly large diaminido-2-phenylindole, and actinomycin D for qualified identifica cell; DSC. diffuse, small cleaved cell; DM, diffuse, mixed small and large cell; DL, diffuse, large cell; IBL, large cell, immunoblastic; SNC, small noncleaved tion of marker chromosomes (9). A minimum of 25 well-spread metacell; HCL, hairy cell leukemia; WM, Waldenstrom's macroglobulinemia; PCD, phases were selected for photography and the chromosomes were plasma cell disorder; MM, multiple myeloma; PCL, plasma cell leukemia; PCM, arranged according to the International System for Human Cytogenetic plasmacytoma; IgH, immunoglobulin heavy chain; IgL, immunoglobulin light Nomenclature (ISCN, 1985) (11). chain; CLL, chronic lymphocytic leukemia. 1275 Downloaded from cancerres.aacrjournals.org on June 17, 2017. © 1989 American Association for Cancer Research. 14q+ MARKER CHROMOSOME RESULTS Non-Hodgkin's Lymphoma. The histológica! classification of the 21 patients was ML-FM in four, ML-FL in one, ML-DSC in three, ML-DM in three, ML-DL in three, ML-IBL in one, and ML-SNC in six. All these lymphomas were of B-cell origin. The specific features of the surface membrane immunoglobulin are shown in Table 1. All 21 patients had clonal karyotypic abnormalities. The modal chromosome number varied from hypodiploid to hyperiripio id; one patient showed hypodiploidy, eight diploidy, 10 hyperdiploidy, and two hypertriploidy. Five patients (Cases 15, 16, and 18-20) had a t(8;14) as a sole abnormality; five (Cases 1, 3,4, 9, and 17) had three to five abnormalities; and 10 (Cases 2, 5-8, 10, 12-14, and 19) had complicated alterations. These karyotypes had many kinds of chromosomal abnormalities in cluding trisomy, monosomy, partial duplication, deletion, re ciprocal translocation, dicentric, or isochromosome. Rearrangement of chromosome 14 at band q32 was the most common chromosomal abnormality and was detected in 17 of IN B-CELL NEOPLASMS the 21 patients. Among six different donor sites, three were correlated with histopathological subtypes (Table 2). Firstly, a translocation between chromosomes 14 and 18, t(14;18) (q32.3;q21.3), was detected in four of five patients with follicular lymphoma (Cases 1-5) (Fig. la). This translocation was also found in a patient with ML-DL (Case 12), in whom another translocation, t(8;22)(q24;ql 1), was observed in all metaphases examined. In addition, a three-way translocation involving the same break points as a standard t(14;18) was found in a patient with ML-DSC (Case 6) (Fig. 2). Secondly, a t(8;14) (q24.1;q32.3) was found in five of six patients with ML-SNC (Cases 16-21) and in a patient with ML-IBL (Case 15) (Fig. le). In the remaining patient with ML-SNC (Case 21), t(8;22)(q24.1;qll.2) was seen (Fig. Id). Thirdly, of three pa tients with ML-DM, two had a t(ll;14)(ql3.3;q32) (Cases 9 and 11) (Fig. \e). Other 14q+ marker chromosomes were found as a translo cation, t(2;14)(q35;q32), in a patient with ML-DSC (Case 7), a t(2;14)(pl3;q32) in a patient with leukemic ML-DM (Case 10) (Fig. 3fl), and a t(l;14)(p22;q32) in a patient with ML-DL (Case 13) (Table 2). Table 1 Summary of cytogenetic results in 21 patients with non-Hodgkin's lymphoma Patients are grouped according to the histológica!types based on N-HLPC Project (1982) (7). Case no.° FM Age/sex Sample source* Surface marker0 Karyotype l* 59/F LN M-K 2 68/M LN M-K 3 51/F LN M-L 4 49/F LN G-L 49, XX, +X, -1.+12, +21, +der(l)t(l;X) (p36.3;qll), I(14;18)(q32.3;q21.3) 75, XXYY, +2, +5, +5, +9, +10, +12, +12, +13, +15, +16, +16, +20, t(l;5) (p22;q33), +der(3)t(3;7) (q21;?), +del (6) (ql3q25), +del(6),+der(7)t(7;?)(p21;?), +der(7), +del(l I)(ql3q23), del(12)(q21q24), t(14;18) (q32;q21), +i(17q),+i(17q), +der(19)t(19;?)(ql3;?), +marl, +mar2 47, XX, -4, +8, +der(4)t(l;4) (ql 2;q35),dup( 11)(q 13q23),t( 14;18)(q32;q21 ) 48,XX,+2,+12,t( 14;18) (q32;q21 ) 5 61/M LN M-L 73, XXY, -Y, +l,+2, +7,+8, +10.+ 13, -14, -15, +16, 75/F LN M-L 7» 33/F LN M 8* 71/M BM M-K 47, XX, -6,-15, +19, del(l)(q42.1), t(5;18;14) (ql3;q21;q32), +dic(6;15)(ql I;pl3), +del(13)(q22.1) 46, XX, +2, -9, -10, -22, t(2;14) (q35;q32),+del(6)(q22),+der(22)t(9;22)(q 12;p 11) 52, XY, -1, -6, +11, +18, +19, +22, t( 1;3)(p21 ;p25),+der( 1)t( 1;1)(p34;q21 ), t(5;9)(q31 ;q34), +der(9)t(9;?)(q34;?), t(ll;13)(pl3;ql2), t(14;?)(pl3;?), +der(21)t(21;?)(q22;?), +mar DM 9 57/F LN M-L 10 59/F PB M-L 11 DL 12* 77/F LN G-K 53/M Tumor G 13 65/F LN M-K 14 59/F LN G-K 48/M BM 40/M 9/M 27/F 69/M 71/M 10/M BM BM PB BM BM BM FL DSC 6* IBL 15* SNC 16 17 18 19 20 21* 47, X, -X, +3, -4, +7, -14, +der(4)t(4;?) (q31 ;?),+der( 14)t( 11;14)(ql 3.3;q32.3) 49, X,+3, +13, +13, t(X; 3; 18)(q21.2;p24.2;pl 1.3), t(2; 14)(p 13;q32), t(8; 11)(p23.1 ;p 13) 46,XX,t(l I;14)(ql3.3;q32.3) 49, XY, +7, +8,del(3)(q25), del(6)(q21), t(8;22) (q24.1;qll), t(14;18)(q32;q21), +der(18)t(14;18)(q32;q21) 46, XX, -9, -17, -18, -20, t(l;9;16) (q21;ql3;pl3), t(l;14) (p22;q32), +del(3)(p21), +del(5)(pl3), del(6)(p21 ),+der( 18)t( 18;?)(p 11;?),+mar 51, X,-X, +5,+8, +9,-21, t(3;l I)(q29;pl3), t(6; 11Xq23;p 15), +der(7)t(7; 11Xp15;p 15), +mar 46,XY,t(8;14)(q24.1;q32) M-L B1+ M-K M-L M-K G-L 46,XY,t(8;14)(q24.1;q32) 48, XY.+l, +19, t(l;7)(q21.3;q22.3), t(8;14)(q24.1;q32) 46,XX,t(8;14)(q24.1;q32) 46,XY,t(8;14)(q24.1;q32) 46,XY,t(8;14)(q24.1;q32) 45, -Y,-4, -21, t(X;5;?)(q28;ql5pl5;?),del(l)(q22q32), t(3;?)(pl2;?),t(4;20)(q21;pl3), t(8;22)(q24.1;qll),del(17)(pll), +der(21)t(21;?)(pl3;?), +der(22)t(8;22)(q24.1;ql 1) " Patient (*) was previously treated (all others untreated). b LN, lymph node; BM, bone marrow; PB, peripheral blood; Tumor, tumor in the peritoneum. ' M, IgM; G, IgG; K, kappa; L, lambda; B,*, positive for B,. 1276 Downloaded from cancerres.aacrjournals.org on June 17, 2017. © 1989 American Association for Cancer Research. 14q+ MARKER CHROMOSOME Table 2 Association of the donor chromosome sites for the 14q+ markers with known oncogene! and with subtypes ofB-cell malignancies in 26 patients showing 14q+ markers chromosomeBreak I4q+ markers1(14:18) site18q21.38q24.1gene"bcl-2myc IN B-CELL NEOPLASMS cells from case 22, a translocation occurred between chromo somes 14 and 22 resulting in the formation of both a 14q+ and a Ph'-like chromosome (Fig. 3ft). Waldenstrom's Macroglobulinemia. 8 patients were diagnosed of No. of cases disease observed*FM by monoclonal increase of the serum IgM level and the presence of neoplastic lymphoplasmacytoid cells in the marrow. In Case DSC 30, neoplastic invasion was also found in the blood, lymph DL WM nodes, and pleural fluid. A cervical lymph node was histologiMM cally classified as ML-SL. t(8;14)K SNC IBLDM Chromosome studies were carried out on marrow cells. In bcl-1—IgK——lipini—IgL—Type Ilql3.3Ip222pl32q353pll6p2114q32.122qll.29Mapped ;DLDMDSCMMPCLHCLHCLHCL1*MM Case 30, the chromosomes were examined in cells obtained 1:14)t(2;14)t(2;14)t(3;14)t(6;14)K14;14)t(14;22)t(14;?)TotalDonor from blood, lymph node, and pleural effusion. Three patients had clonal chromosomal abnormalities (Table 3) and five showed a normal karyotype. In Case 30, a t(14;18) was shown in 11 of 25 lymph node cells. In this patient, another +der(18)t(14;18) was seen (Fig. Ib). Blood and pleural fluid showed a normal karyotype. 226 Multiple Myeloma and Related Disorders. 29 patients with °Human Gene Mapping 9 (36). PCD were examined in this series. The patients were classified * Three-way translocation (*), t(5;18;14). on the basis of their diagnoses and clinical status at the time of chromosome analysis as follows: 25 patients with MM, one with leukemic MM, two with PCL, and one with PCM. Chromosome analyses were done on bone marrow aspirates from 24 patients and five (21%) showed abnormal clones. Peripheral blood was successfully studied in three patients and two (one leukemic MM and one PCL, Cases 58 and 60) had chromosomally abnormal clones. A complex karyotype was found in specimens of peritoneal fluid from a patient with MM 14 18 18 14 (Case 54) and needle-biopsied tumor tissue from a patient with solitary nonproducing PCM (Case 61) (Table 3). 21 patients had neither numerical nor structural aberrations. Among eight patients who showed chromosomal abnormalities, five had one or two 14q+ marker chromosomes (Cases 53, 54, 55, 58, and 60), i.e., t(14;18)(32.3;q21.3), t(3;14)(pll;q32), t(6;14) (p21.1;q32) (Fig. I/), or 14q+ markers whose donor chromo somes were not identified. 8 Chromosomal Abnormalities other than I4q+ Rearrangement 14 22 Detected in Patients with B-Cell Malignancies. Other recurrent chromosomal abnormalities detected are summarized in Table 4. Abnormalities of 6q were seen in 10 patients, Iq in 10, Ip in six, lip in six, 7p in four, Xq in four, monosomy for X in seven, and trisomy for chromosome 12 in five and for chro mosome 3 in four. Among them, trisomy for chromosome 12 was observed as an additional chromosomal change in four of eight patients with t(14;18) (Cases 1, 2, 4, and 53). t a ?-|4. i I-1«« IN u ¿Ãa* 6 14 DISCUSSION Fig. 1. Partial karyotypes from patients with a B coll neoplasm, a and b, a t(14;18)(q32.3;q2l,3) in a patient with ML-FM (Case 1) and a patient with WM (Case 30); e, a t(8;14)(q24.1;q32.3) in a patient with ML-SNC (Burkitt's type) (Case 18); d, a variant t(8;22)(q24;qll) in a patient with ML-SNC (Burkitt's type) (Case 21);/, a 1(11;14)(ql3.3;q32.3) in a patient with ML-DM (Case 11); g, a t(6;14)(p21.1;q32.3) in a patient with plasma cell leukemia (Case 60); arrows, break points involved in reciprocal translocations. Hairy Cell Leukemia. Diagnosis of HCL was confirmed by demonstrating the presence of tartrate-resistant acid phosphatase-positive cells in all three patients. The leukemic cells of these patients were shown to be of B-cell origin. One patient showed a serum M-component, IgG-K, and the same type of surface membrane immunoglobulin (Case 22). These three patients had clonal chromosomal abnormalities including a 14q+ marker chromosome (Table 3); t(14;22) (q32.3;ql 1.2) (Case 22), t(14;14)(q32.11;q32.33) (Case 23), and +der(14)t(14;?)(q32.3;?) (Case 24). In 11 of 100 metaphase Clonal chromosomal abnormalities were identified in 35 of 61 patients with B-cell malignancies; all 21 patients with NHL, all three with HCL, three of eight with WM, and eight of 29 with PCD. Chromosome studies have been successfully per formed only in a very restricted number of patients with WM or MM (12). This is because of the very slow proliferation rate of the neoplastic B-cells. In the present study, rearrangements involving chromosome 14 at band q32 was observed in 26 patients (Fig. 4, Table 2). Among them, the donor chromosome and its break point could be identified in 23 patients. Thus, it was found that certain types of 14q+ rearrangement are asso ciated with certain types of B-cell malignancies. A t(14;18)(q32.3;q21.3) was found in eight patients: four of five patients with follicular lymphoma, and one patient each with ML-DSC, ML-DL, WM, and nonsecretory MM. The present study confirmed that this translocation is highly specific 1277 Downloaded from cancerres.aacrjournals.org on June 17, 2017. © 1989 American Association for Cancer Research. ]4q+ MARKER CHROMOSOME IN B-CELL NEOPLASMS (CV It ir ir v «I II 13 V §tvt «fis 10 v 14 16 15 11 12 17 »4 -19- 21 20 22 X X mar NO5673-80337 Fig. 2. Full karyotype from a patient with ML-DSC (Case 6). Small arrows, three-way translocations, t(5;18;14Xql3;q21;q32). for follicular lymphoma as was reported previously (13, 14). However, this translocation has also been found in patients with B-cell neoplasms other than follicular lymphoma (15-18). It has not been reported previously that t(14;18) can occur in patients with WM or MM. On the basis of these findings, in conjunction with the observation that follicular lymphoma may be transformed into other types of B-cell malignancies in which neoplastic cells show immunoglobulin secretion (19, 20), a number of patients with MM or WM may share a similar pathogenetic background with follicular lymphoma. One of the patients with ML-DSC mentioned above exhibited a three-way translocation involving chromosomes 5, 14, and 18. The long arm of chromosome 5 was translocated to chro mosome 18, the distal segment of chromosome 18 to chromo some 14, and the terminal segment of chromosome 14 to chromosome 5, resulting in a typical 14q+ marker chromo some. Thus, the translocation of the terminal portion of 18q to 14q is a critical event in the t( 14:18). A t(8;14)(q24.1;q32.3) was found in five of six patients with ML-SNC (Burkitt's or non-Burkitt's) and in one with ML-IBL. Another translocation, t(8;22), affecting the same chromosomal break point 8q24.1, was seen in one patient with ML-SNC and another with ML-DL. Interestingly, t(8;22) was seen in com bination with t(14;18) in a patient with ML-DL. The simulta neous occurrence of t( 14;18) and t(8;14) has been reported in a patient with pre-B ALL and another with acute B-cell leukemia cell line (15, 16). Another type of coexistence has also been reported in a patient with CLL, in whom t(14;18) and t(2;8) were detected (21 ). The significance of the concurrent appear ance of t(14;18) with t(8;14), t(8;22), or t(2;8) remains to be elucidated in B-cell neoplasia. It has been speculated that the two translocations do not occur simultaneously, but sequen tially (21). A t(l I;14)(ql3;q32) was found in two patients with ML-DM. In Case 11, the segment 11q 13—»qter was translocated to 14q32 and vice versa. In Case 9, t(l 1;14) is not reciprocal, resulting in a trisomy for the segment 1Iql3—»qter. This translocation has been reported in MM (22). The t(l 1;14) was reported to occur recurrently in ML-SL (23), CLL (4), and MM (24). All three patients with HCL had a 14q+ marker chromo some, the donor of which was different: chromosome 14 (band q32.11), 22 (band ql 1.2), and an unknown chromosome. There are only a few reported cases with chromosomal abnormalities (25, 26), since most hairy cells are nondividing. Bristo-Babapulle identified a 14q+ marker chromosome in five patients with HCL (18). The donor sites were different in each case. 1278 Downloaded from cancerres.aacrjournals.org on June 17, 2017. © 1989 American Association for Cancer Research. 14q+ MARKER CHROMOSOME IN B-CELL NEOPLASMS Table 3 Summary ofcytogenetic results in patients with hairy cell leukemia, macroglobulinemia, and plasma cell disorders Patients are grouped according to types of B-cell malignancy. Case no.°HCL22 source*PB 60/FSample PB"Surface 23Age/sex60/M marker'G-K G-LM-proteinIgG-K(-)Abnormal 24 40/M PB« G-K WM 25-29 30 31 32» 40/F 70/M 70/M LN BM BM M-K ND ND MM 33-52 53* 49/F Pleural effusion 54« 55» 60/F 67/F BM Ascites BM 56 57» 58« 69/M 79/M 62/F 57/M 59/F PCL 59 60 cells(%f11100Karyotype46,XY,del(l)(q32.lq42.3),t(14;22)(q32.3;qll.2) 100 IgM-K IgM IgM 44 40 40 100 (nonsecretory) ND ND BJ-L BJ-L SCA 100 100 BM BM PB.BM ND IgG-K IgA-K IgG-K 15 SCA 100 PB PB ND IgG-L Nonproducing 100 ND ND 45,X-,-X,+der(5)t(5; 17)(p 15;q2 1),del(6)(q 15q25), I(14;14)(q32.11;q32.33) 46,XY,-14,+der( 14)t( 14;?)(q32.3;?) Normal karyotypes 48,XX,+X,t( 14; 18)(q32;q21 ),+der( 18)t( 14; 18) 46,XY,del(15)(q24) 48, XY, -4, -19, +21, +22, t(7;17)(pl5;pl3), +der( 19)t(4; 19)(q23;ql 3.4), +mar 1 Normal karyotypes 82, XX, -X, -2,+4, -7,+8, +9,+9, -10,-11,+12, +13, +14, +15, -17, +18, -20, -20, -20.+22, +der(X) t(X;?)(q28;?), +der(2)t(2;7)(q35;ql 1), +der(2), +der(7)t(l;7)(q32;p22), +der( 11)t( 11;?)(q23;?), t( 14; 18)(q32.3;q21.3), t(14;18), del(16)(ql 1), del(16), +i(16q), +i(16q), +der(20)t(ll;20)(ql3.3;ql3.1), +der(20), +der(20), +der(20) 46,XX,t(I4;18Xq32.3;q21.3) 73.XX : 1p-, 3p-, oq-, 9q+, 11p+, i(17q), 14q+ 53, XX : +l,+3, +7, +9, +12, +15, +17, +18, +19, -22, +der(2)t(2;6)(p25;ql3), +dic(6)(ql 1), +der(8), +der(l 1), t(l I;?)(pl4;?), +der(14)t(14;?)(q32;?) 47,XY,+14/46,XY,-2,+mar 47,XY,+20,del( 11)(p 11.2) 41 ,XX: t( 1;6Kq44;q 16), t(3; 14)(p 11;q32), del( 11)(q 14),der(22)t( 12;22)(22qter-22p 12::12q 1112q24::12ql3-l2q24::12ql3-12qter) Normal karyotype 46,XX,del( 1)(p 13),t(6; 14)(p21.1 ;q32)/45,X-X,del( 1)(p 13),t(6; 14)(p21.1 ;q32) PCM 6175/FTumorNonproducing10083,XX:7q+,llq+,20q+ °Patients (*) previously treated (all other untreated). * Stimulated with STA (**) (10). ' ND, not done. d SCA, single cell abnormality. 14 22 14 Fig. 3. Partial karyotypes of reciprocal translocations between the immunn globulin heavy chain gene locus and one of the light chain gene loci, a, a t(2;14)(pl3;q32.3) in a patient with leukemic ML-DM (Case 10); a t(14;22)(q32.3;ql 1.2) resulting in 14q+ marker and I'll' chromosome ina patient with HCL (Case 22). We identified a novel translocation, t(6;14)(p21.1;q32) in a patient with PCL (Case 60). Recently, the human homologue, lipini, of the murine pim-l gene, has been assigned to band 6p21 (27). The hpim gene is expressed in various hematopoietic cell lines. A case of childhood T-cell ALL was reported, in which the chromosomal segment, 6p21-pter, was translocated to the 7q36 band where the T-cell receptor-/3-chain gene has been assigned (28). It is possible that hpim is also implicated in the pathogenesis of B cell malignancy. Chromosomal translocation results in the conjunction of an oncogene with the immunoglobulin gene in B-cell neoplasm (29, 30). In our series, 16 patients showed this type of re arrangement among 26 with the 14q+ marker. However, chro mosomal translocations occurred between the IgH gene locus and one of the IgL gene loci in two patients (Cases 10 and 22). One is t(2;14)(pl3;q32.3) found in a patient with leukemic MLDM. The neoplastic cells showed a surface IgM immunoglob ulin of X-light chain. The other is t(14;22)(q32.3;qll.2) in another patient with HCL. The leukemic cells bore a surface IgG of the «-lightchain type. Each chromosomal abnormality has been reported previously: t(2;14) in a child with CLL (31), whose leukemic cells expressed IgM and IgD-/c membrane immun*»globulins;and t(14;22) in 3 patients with ALL (32, 33) and CLL (4). Both of our cases revealed the mismatch between the IgL phenotype of the neoplastic cells and the gene loci involved in these translocations. Similar findings were reported in a few cell lines (34, 35), in which t(8;22) was found in cells producing the K-light chain. The role of translocations between the loci for IgH and K-or X-light chains, t(2;14) or t(14;22), in the pathogenesis of B-cell malignancies remains to be eluci dated. In conclusion, we found a variety of 14q+ marker chromo some in 26 of 35 patients with clonal chromosomal anomalies in differentiated B-cell malignancy. In NHL, three 14q+ marker 1279 Downloaded from cancerres.aacrjournals.org on June 17, 2017. © 1989 American Association for Cancer Research. 14q+ MARKER CHROMOSOME IN B-CELL NEOPLASMS Table 4 Association of recurrent chromosome abnormalities with types ofB-cell malignancies Chromo SNC! some abnor FL(n 3)2221»11NHL°DM(n = (n3 = 3) =(n=l)411 4) mality14q32.36qlq18q21.38424.1-XIPlipIlql3.3+12+37pXqFM WM(n =3)33) IBL 512**1 I212*«*213L (n = (n = 1) Total (35)2610105444 111111MM432111322111PCDPCL(n=l)111PCM 1 1421311DSC(« 611HCL *, complex translocation (5;18;14); ", combined with t(8;22); **', t(l I;14)(ql3.3;q32.3). REFERENCES 13 U 2H 15 16 17 W 20 9 10 11 21 22 X 12 Fig. 4. Human chromosome map (Human Gene Mapping 9) (36) of oncogenes, immunoglobulin genes, and chromosomal break points (•and O) in B-cell neoplasia. O, donor sites of 14q+ marker chromosome. The karyotype represents Giemsa bands at the approximately 550 bands stage, according to the ISCN 1985 (11). chromosomes were associated with the morphological classifi cation, i.e., t(14;18) in ML-FM, t(8;14) in ML-SNC, and t(l 1;14) in ML-DM. The donor for the 14q+ marker chromo some originated from the bands of oncogene loci; bcl-2, c-myc, or bcl-l. However, the t(14;18) was also observed in patients with ML-DSC, ML-DL, WM, and MM (a single case of each). A new chromosomal translocation, (6;14)(p21.1;q32.3), asso ciated with oncogene c-pim, was found in a patient with PCL. Thus, the 14q+ chromosome was reconstructed between an immunoglobulin gene and an oncogene, with rare exceptions, between the IgH gene and one of the IgL genes. 10. S., Machii, T., Kitani, T., and Tarili, S. Mitogenic response of neoplastic "hairy cells" to Staphylococcus aureus Cowan 1. Acta Haematol. Jpn., 48: 1042-1052, 1985. 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Paris Conference (1987): ninth international workshop on human gene mapping. Cytogenet. Cell Genet., 46:1-762,1987. 1281 Downloaded from cancerres.aacrjournals.org on June 17, 2017. © 1989 American Association for Cancer Research. Nonrandom Rearrangement of Chromosome 14 at Band q32.33 in Human Lymphoid Malignancies with Mature B-Cell Phenotype Kazuhiro Nishida, Masafumi Taniwaki, Shinichi Misawa, et al. Cancer Res 1989;49:1275-1281. Updated version E-mail alerts Reprints and Subscriptions Permissions Access the most recent version of this article at: http://cancerres.aacrjournals.org/content/49/5/1275 Sign up to receive free email-alerts related to this article or journal. To order reprints of this article or to subscribe to the journal, contact the AACR Publications Department at [email protected]. To request permission to re-use all or part of this article, contact the AACR Publications Department at [email protected]. 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