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Cennamo M, Sirocchi D, Giudici C, Giagnacovo M, Petracco G, Ferrario D, Garganigo S, Papa A, Veniani E, Squizzato A, Del Vecchio L, Patriarca C, Partenope M, Modena P. A Peculiar CLL Case with Complex Chromosome 6 Rearrangements and Refinement of All Breakpoints at the Gene Level by Genomic Array: A Case Report. J Clin Med 2023; 12:4110. [PMID: 37373803 DOI: 10.3390/jcm12124110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
INTRODUCTION Chronic lymphocytic leukemia (CLL), the most common leukemia in Western countries, is a mature B-cell chronic lymphoproliferative disorder characterized by the accumulation of neoplastic CD5+ B lymphocytes, functionally incompetent and usually monoclonal in origin, in bone marrow, lymph nodes and blood. Diagnosis occurs predominantly in elderly patients, with a median age reported between 67 and 72 years. CLL has a heterogeneous clinical course, which can vary from indolent to, less frequently, aggressive forms. Early-stage asymptomatic CLL patients do not require immediate therapeutic intervention, but only observation; treatment is necessary for patients with advanced disease or when "active disease" is observed. The most frequent autoimmune cytopenia (AIC) is autoimmune haemolytic anaemia (AHIA). The main mechanisms underlying the appearance of AIC in CLL are not fully elucidated, the predisposition of patients with CLL to suffering autoimmune complications is variable and autoimmune cytopenia can precede, be concurrent, or follow the diagnosis of CLL. CASE PRESENTATION A 74-year-old man was admitted to the emergency room following the finding of severe macrocytic anaemia during blood tests performed that same day, in particular the patient showed a profound asthenia dating back several months. The anamnesis was silent and the patient was not taking any medications. The blood examination showed an extremely high White Blood Cell count and findings of AIHA in CLL-type mature B-cell lymphoproliferative neoplasia. Genetic investigations: Conventional karyotyping was performed and it obtained a trisomy 8 and an unbalanced translocation between the short arm of chromosome 6 and the long arm of chromosome 11, concurrent with interstitial deletions in chromosomes 6q and 11q that could not be defined in detail. Molecular cytogenetics (FISH) analyses revealed Ataxia Telangiectasia Mutated (ATM) monoallelic deletion (with loss of ATM on derivative chromosome 11) and retained signals for TP53, 13q14 and centromere 12 FISH probes. TP53 and IGHV were not mutated. Array-CGH confirmed trisomy of the entire chromosome 8 and allowed us to resolve in detail the nature of the unbalanced translocation, revealing multiple regions of genomic losses on chromosomes 6 and 11. DISCUSSION The present case report is an unusual CLL case with complex karyotype and refinement of all breakpoints at the gene level by the genomic array. From a genetic point of view, the case under study presented several peculiarities. CONCLUSIONS We report the genetic findings of a CLL patient with abrupt disease onset, so far responding properly to treatments despite the presence of distinct genetic adverse traits including ATM deletion, complex karyotype and chromosome 6q chromoanagenesis event. Our report confirms that interphase FISH alone is not able to provide an overview of the whole genomic landscape in selected CLL cases and that additional techniques are required to reach an appropriate cytogenetic stratification of patients.
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Affiliation(s)
- Michele Cennamo
- Department of Translational Medical Sciences, University of Naples "Federico II", 80131 Naples, Italy
- Clinical Pathology and Microbiology Unit, Laboratory Analysis, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
| | - Davide Sirocchi
- General Medicine Unit, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
| | - Carolina Giudici
- Genetics Unit, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
| | | | - Guido Petracco
- Pathological Unit, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
| | - Daniela Ferrario
- Pathological Unit, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
| | - Simona Garganigo
- Clinical Pathology and Microbiology Unit, Laboratory Analysis, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
| | - Angela Papa
- Clinical Pathology and Microbiology Unit, Laboratory Analysis, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
| | - Emanuela Veniani
- Clinical Pathology and Microbiology Unit, Laboratory Analysis, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
| | - Alessandro Squizzato
- General Medicine Unit, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
- Department of Medicine and Surgery, Research Centre on Thromboembolic Disorders and Antithrombotic Therapies, University of Insubria, 21110 Varese, Italy
| | - Lucia Del Vecchio
- Department of Nephrology and Dialysis, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
| | - Carlo Patriarca
- Pathological Unit, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
| | - Michelarcangelo Partenope
- Clinical Pathology and Microbiology Unit, Laboratory Analysis, ASST Lariana, Hospital Sant'Anna, 22100 Como, Italy
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Puiggros A, Ramos-Campoy S, Kamaso J, de la Rosa M, Salido M, Melero C, Rodríguez-Rivera M, Bougeon S, Collado R, Gimeno E, García-Serra R, Alonso S, Moro-García MA, García-Malo MD, Calvo X, Arenillas L, Ferrer A, Mantere T, Hoischen A, Schoumans J, Espinet B. Optical Genome Mapping: A Promising New Tool to Assess Genomic Complexity in Chronic Lymphocytic Leukemia (CLL). Cancers (Basel) 2022; 14:cancers14143376. [PMID: 35884436 PMCID: PMC9317182 DOI: 10.3390/cancers14143376] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/07/2022] [Accepted: 07/09/2022] [Indexed: 11/30/2022] Open
Abstract
Novel treatments in chronic lymphocytic leukemia (CLL) have generated interest regarding the clinical impact of genomic complexity, currently assessed by chromosome banding analysis (CBA) and chromosomal microarray analysis (CMA). Optical genome mapping (OGM), a novel technique based on imaging of long DNA molecules labeled at specific sites, allows the identification of multiple cytogenetic abnormalities in a single test. We aimed to determine whether OGM is a suitable alternative to cytogenomic assessment in CLL, especially focused on genomic complexity. Cytogenomic OGM aberrations from 42 patients were compared with CBA, FISH, and CMA information. Clinical−biological characteristics and time to first treatment (TTFT) were analyzed according to the complexity detected by OGM. Globally, OGM identified 90.3% of the known alterations (279/309). Discordances were mainly found in (peri-)centromeric or telomeric regions or subclonal aberrations (<15−20%). OGM underscored additional abnormalities, providing novel structural information on known aberrations in 55% of patients. Regarding genomic complexity, the number of OGM abnormalities had better accuracy in predicting TTFT than current methods (C-index: 0.696, 0.602, 0.661 by OGM, CBA, and CMA, respectively). A cut-off of ≥10 alterations defined a complex OGM group (C-OGM, n = 12), which included 11/14 patients with ≥5 abnormalities by CBA/CMA and one patient with chromothripsis (Kappa index = 0.778; p < 0.001). Moreover, C-OGM displayed enrichment of TP53 abnormalities (58.3% vs. 3.3%, p < 0.001) and a significantly shorter TTFT (median: 2 vs. 43 months, p = 0.014). OGM is a robust technology for implementation in the routine management of CLL patients, although further studies are required to define standard genomic complexity criteria.
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Affiliation(s)
- Anna Puiggros
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
- Correspondence: (A.P.); (B.E.)
| | - Silvia Ramos-Campoy
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
| | - Joanna Kamaso
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
| | - Mireia de la Rosa
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
| | - Marta Salido
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
| | - Carme Melero
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
| | - María Rodríguez-Rivera
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
| | - Sandrine Bougeon
- Oncogenomic Laboratory, Hematology Service, Lausanne University Hospital, 1011 Lausanne, Switzerland; (S.B.); (J.S.)
| | - Rosa Collado
- Department of Hematology, Consorcio Hospital General Universitario, 46014 Valencia, Spain; (R.C.); (R.G.-S.)
| | - Eva Gimeno
- Department of Hematology, Hospital del Mar, 08003 Barcelona, Spain;
- Applied Clinical Research in Hematological Malignances, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
| | - Rocío García-Serra
- Department of Hematology, Consorcio Hospital General Universitario, 46014 Valencia, Spain; (R.C.); (R.G.-S.)
- Research Foundation from Hospital General Universitario, 46014 Valencia, Spain
| | - Sara Alonso
- Department of Hematology, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain;
| | | | | | - Xavier Calvo
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
| | - Leonor Arenillas
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
| | - Ana Ferrer
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
| | - Tuomo Mantere
- Department of Human Genetics, Radboud University Medical Center, 6500 Nijmegen, The Netherlands; (T.M.); (A.H.)
- Laboratory of Cancer Genetics and Tumor Biology, Cancer and Translational Medicine Research Unit and Biocenter Oulu, University of Oulu, 90570 Oulu, Finland
| | - Alexander Hoischen
- Department of Human Genetics, Radboud University Medical Center, 6500 Nijmegen, The Netherlands; (T.M.); (A.H.)
- Radboud Center for Infectious Diseases (RCI), Department of Internal Medicine and Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6532 Nijmegen, The Netherlands
| | - Jacqueline Schoumans
- Oncogenomic Laboratory, Hematology Service, Lausanne University Hospital, 1011 Lausanne, Switzerland; (S.B.); (J.S.)
| | - Blanca Espinet
- Molecular Cytogenetics and Hematological Cytology Laboratories, Pathology Department, Hospital del Mar, 08003 Barcelona, Spain; (S.R.-C.); (J.K.); (M.d.l.R.); (M.S.); (C.M.); (M.R.-R.); (X.C.); (L.A.); (A.F.)
- Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), 08003 Barcelona, Spain
- Correspondence: (A.P.); (B.E.)
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Ramos-Campoy S, Puiggros A, Beà S, Bougeon S, Larráyoz MJ, Costa D, Parker H, Rigolin GM, Ortega M, Blanco ML, Collado R, Salgado R, Baumann T, Gimeno E, Moreno C, Bosch F, Calvo X, Calasanz MJ, Cuneo A, Strefford JC, Nguyen-Khac F, Oscier D, Haferlach C, Schoumans J, Espinet B. Chromosome banding analysis and genomic microarrays are both useful but not equivalent methods for genomic complexity risk stratification in chronic lymphocytic leukemia patients. Haematologica 2022; 107:593-603. [PMID: 33691382 PMCID: PMC8883543 DOI: 10.3324/haematol.2020.274456] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 02/26/2021] [Indexed: 11/09/2022] Open
Abstract
Genome complexity has been associated with poor outcome in patients with chronic lymphocytic leukemia (CLL). Previous cooperative studies established five abnormalities as the cut-off that best predicts an adverse evolution by chromosome banding analysis (CBA) and genomic microarrays (GM). However, data comparing risk stratification by both methods are scarce. Herein, we assessed a cohort of 340 untreated CLL patients highly enriched in cases with complex karyotype (CK) (46.5%) with parallel CBA and GM studies. Abnormalities found by both techniques were compared. Prognostic stratification in three risk groups based on genomic complexity (0-2, 3- 4 and ≥5 abnormalities) was also analyzed. No significant differences in the percentage of patients in each group were detected, but only a moderate agreement was observed between methods when focusing on individual cases (κ=0.507; P<0.001). Discordant classification was obtained in 100 patients (29.4%), including 3% classified in opposite risk groups. Most discrepancies were technique-dependent and no greater correlation in the number of abnormalities was achieved when different filtering strategies were applied for GM. Nonetheless, both methods showed a similar concordance index for prediction of time to first treatment (TTFT) (CBA: 0.67 vs. GM: 0.65) and overall survival (CBA: 0.55 vs. GM: 0.57). High complexity maintained its significance in the multivariate analysis for TTFT including TP53 and IGHV status when defined by CBA (hazard ratio [HR] 3.23; P<0.001) and GM (HR 2.74; P<0.001). Our findings suggest that both methods are useful but not equivalent for risk stratification of CLL patients. Validation studies are needed to establish the prognostic value of genome complexity based on GM data in future prospective studies.
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Affiliation(s)
- Silvia Ramos-Campoy
- Molecular Cytogenetics Laboratory, Pathology Department, Hospital del Mar, Barcelona, Spain; Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Anna Puiggros
- Molecular Cytogenetics Laboratory, Pathology Department, Hospital del Mar, Barcelona, Spain; Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Barcelona, Spain.
| | - Sílvia Beà
- Hematopathology Unit, Hospital Clínic, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CIBERONC, Barcelona, Spain
| | - Sandrine Bougeon
- Oncogenomic Laboratory, Hematology Service, Lausanne University Hospital, Lausanne, Switzerland
| | - María José Larráyoz
- Cytogenetics and Hematological Genetics Services, Department of Genetics, University of Navarra, Pamplona, Spain
| | - Dolors Costa
- Hematopathology Unit, Hospital Clínic, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CIBERONC, Barcelona, Spain
| | - Helen Parker
- Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | | | - Margarita Ortega
- Department of Hematology, University Hospital Vall d'Hebron, Barcelona, Spain
| | - María Laura Blanco
- Department of Hematology, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Rosa Collado
- Department of Hematology, Consorcio Hospital General Universitario, Valencia, Spain
| | - Rocío Salgado
- Cytogenetics Laboratory, Hematology Department, Fundación Jiménez Díaz, Madrid, Spain
| | - Tycho Baumann
- Hematopathology Unit, Hospital Clínic, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CIBERONC, Barcelona, Spain
| | - Eva Gimeno
- Molecular Cytogenetics Laboratory, Pathology Department, Hospital del Mar, Barcelona, Spain; Applied Clinical Research in Hematological Malignances, Cancer Research Program, IMIMHospital del Mar, Barcelona, Spain
| | - Carolina Moreno
- Department of Hematology, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Francesc Bosch
- Department of Hematology, University Hospital Vall d'Hebron, Barcelona, Spain
| | - Xavier Calvo
- Molecular Cytogenetics Laboratory, Pathology Department, Hospital del Mar, Barcelona, Spain; Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - María José Calasanz
- Cytogenetics and Hematological Genetics Services, Department of Genetics, University of Navarra, Pamplona, Spain
| | - Antonio Cuneo
- Hematology Section, St. Anna University Hospital, Ferrara, Italy
| | - Jonathan C Strefford
- Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Florence Nguyen-Khac
- Hematology Department and Sorbonne Université, Hopital Pitie-Salpetriere, APHP, INSERM U1138, Paris, France
| | - David Oscier
- Department of Molecular Pathology, Royal Bournemouth Hospital, Bournemouth, UK
| | | | - Jacqueline Schoumans
- Oncogenomic Laboratory, Hematology Service, Lausanne University Hospital, Lausanne, Switzerland
| | - Blanca Espinet
- Molecular Cytogenetics Laboratory, Pathology Department, Hospital del Mar, Barcelona, Spain; Translational Research on Hematological Neoplasms Group, Cancer Research Program, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Barcelona, Spain.
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Harris RA, Stevens JM, Pickering DL, Althof PA, Smith LM, Sanmann JN, Dave BJ. Frequency, variations, and prognostic implications of chromosome 14q32 deletions in chronic lymphocytic leukemia. Leuk Res 2021; 110:106665. [PMID: 34293710 DOI: 10.1016/j.leukres.2021.106665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 07/02/2021] [Accepted: 07/09/2021] [Indexed: 02/07/2023]
Abstract
The clinical implications of deletions within chromosome 14q32 in CLL pathogenesis remain unclear. We examined the frequency of 14q32 deletions among CLL cases by karyotype and FISH, categorized the variation using genomic microarray, and assessed the prognostic impact by time-to-first-treatment (TTFT) analysis. A 14q32 abnormality was detected in 35 % (245/698) of cases, with the majority containing a 5' partial telomeric 14q32 deletion. These deletions within the IGH variable region (35/40) ranged from 236 kb to 1.4 Mb involving FAM30A, ADAM6, LINC00226, and LINC00221. The 214 kb minimum deleted region implicated in CLL pathogenesis encompassed LINC00221. Cases with a 14q32 deletion had a shorter median TTFT compared to cases with a sole deletion/nullisomy 13q, a good prognostic indicator, and longer than cases with a sole deletion of 11q or 17p, conferring an unfavorable prognosis. This investigation underscores the importance of comprehensive testing to apprehend the implications of 14q32 deletions in CLL.
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Affiliation(s)
- Rachel A Harris
- Human Genetics Laboratory, University of Nebraska Medical Center, Omaha, NE, United States
| | - Jadd M Stevens
- Human Genetics Laboratory, University of Nebraska Medical Center, Omaha, NE, United States
| | - Diane L Pickering
- Human Genetics Laboratory, University of Nebraska Medical Center, Omaha, NE, United States
| | - Pamela A Althof
- Human Genetics Laboratory, University of Nebraska Medical Center, Omaha, NE, United States
| | - Lynette M Smith
- Department of Biostatistics, University of Nebraska Medical Center, Omaha, NE, United States
| | - Jennifer N Sanmann
- Human Genetics Laboratory, University of Nebraska Medical Center, Omaha, NE, United States
| | - Bhavana J Dave
- Human Genetics Laboratory, University of Nebraska Medical Center, Omaha, NE, United States.
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Complex karyotype as a predictor of high-risk chronic lymphocytic leukemia: A single center experience over 12 years. Leuk Res 2019; 85:106218. [PMID: 31476701 DOI: 10.1016/j.leukres.2019.106218] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 11/22/2022]
Abstract
OBJECTIVES A complex karyotype (CK) is considered a poor prognostic marker in chronic lymphocytic leukemia (CLL). METHODS The study analyzed 644 untreated CLL patients (pts) using conventional/molecular cytogenetics to reveal the presence of a CK and its composition and to assess its predictive value. The mutational status ofTP53 was detected by next generation sequencing. RESULTS A CK was detected in 79 pts (12.3%). Patients with a CK showed shorter overall survival (OS) compared to those without a CK (77 months vs. 115 months, p < 0.0001). Chromosomes most frequently included in a CK were 13, 11, 17, 8, 2, and 6. The most common aberrations in a CK were translocations, numerical changes and dicentric chromosomes (with no effect on OS). Patients with aberrations ofTP53 and ATM were shown to have adverse prognosis comparable to patients with a CK without these abnormalities. A stronger impact of a CK on OS of female and older CLL patients was observed. CONCLUSIONS The determining of the presence of a CK is essential in modern clinical CLL practice. According to recent studies, the presence of a CK affects clinical and treatment decision-making.
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Mestichelli F, Dalsass A, Ferretti S, Camaioni E, Angelini M, Mei S, Pezzoni V, Travaglini F, Troiani E, Angelini S, Galieni P. Array CGH analysis reveals deletion of chromosome 22q11 in CLL with normal karyotype and no fish alterations. Br J Haematol 2017; 183:152-155. [DOI: 10.1111/bjh.14949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
| | - Alessia Dalsass
- U.O.C Ematologia, Ospedale C.G. Mazzoni; Ascoli Piceno Italy
| | - Silvia Ferretti
- U.O.C Ematologia, Ospedale C.G. Mazzoni; Ascoli Piceno Italy
| | - Elisa Camaioni
- U.O.C Ematologia, Ospedale C.G. Mazzoni; Ascoli Piceno Italy
| | - Mario Angelini
- U.O.C Ematologia, Ospedale C.G. Mazzoni; Ascoli Piceno Italy
| | - Sabrina Mei
- U.O.C Ematologia, Ospedale C.G. Mazzoni; Ascoli Piceno Italy
| | - Valerio Pezzoni
- U.O.C Ematologia, Ospedale C.G. Mazzoni; Ascoli Piceno Italy
| | | | | | | | - Piero Galieni
- U.O.C Ematologia, Ospedale C.G. Mazzoni; Ascoli Piceno Italy
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Stevens-Kroef MJ, van den Berg E, Olde Weghuis D, Geurts van Kessel A, Pfundt R, Linssen-Wiersma M, Benjamins M, Dijkhuizen T, Groenen PJ, Simons A. Identification of prognostic relevant chromosomal abnormalities in chronic lymphocytic leukemia using microarray-based genomic profiling. Mol Cytogenet 2014; 7:3. [PMID: 24401281 PMCID: PMC3905918 DOI: 10.1186/1755-8166-7-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 12/11/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Characteristic genomic abnormalities in patients with B cell chronic lymphocytic leukemia (CLL) have been shown to provide important prognostic information. Fluorescence in situ hybridization (FISH) and multiplex ligation-dependent probe amplification (MLPA), currently used in clinical diagnostics of CLL, are targeted tests aimed at specific genomic loci. Microarray-based genomic profiling is a new high-resolution tool that enables genome-wide analyses. The aim of this study was to compare two recently launched genomic microarray platforms, i.e., the CytoScan HD Array (Affymetrix) and the HumanOmniExpress Array (Illumina), with FISH and MLPA to ascertain whether these latter tests can be replaced by either one of the microarray platforms in a clinical diagnostic setting. RESULT Microarray-based genomic profiling and FISH were performed in all 28 CLL patients. For an unbiased comparison of the performance of both microarray platforms 9 patients were evaluated on both platforms, resulting in the identification of exactly identical genomic aberrations. To evaluate the detection limit of the microarray platforms we included 7 patients in which the genomic abnormalities were present in a relatively low percentage of the cells (range 5-28%) as previously determined by FISH. We found that both microarray platforms allowed the detection of copy number abnormalities present in as few as 16% of the cells. In addition, we found that microarray-based genomic profiling allowed the identification of genomic abnormalities that could not be detected by FISH and/or MLPA, including a focal TP53 loss and copy neutral losses of heterozygosity of chromosome 17p. CONCLUSION From our results we conclude that although the microarray platforms exhibit a somewhat lower limit of detection compared to FISH, they still allow the detection of copy number abnormalities present in as few as 16% of the cells. By applying similar interpretation criteria, the results obtained from both platforms were comparable. In addition, we conclude that both microarray platforms allow the identification of additional potential prognostic relevant abnormalities such as focal TP53 deletions and copy neutral losses of heterozygosity of chromosome 17p, which would have remained undetected by FISH or MLPA. The prognostic relevance of these novel genomic alterations requires further evaluation in prospective clinical trials.
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Affiliation(s)
- Marian Jpl Stevens-Kroef
- Department of Human Genetics, Radboud university medical center, P,O, Box 9101, Nijmegen 6500 HB, The Netherlands.
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Amarillo I, Bui PH, Kantarci S, Rao N, Shackley BS, García R, Tirado CA. Atypical rearrangement involving 3'-IGH@ and a breakpoint at least 400 Kb upstream of an intact MYC in a CLL patient with an apparently balanced t(8;14)(q24.1;q32) and negative MYC expression. Mol Cytogenet 2013; 6:5. [PMID: 23369149 PMCID: PMC3599416 DOI: 10.1186/1755-8166-6-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 12/13/2012] [Indexed: 12/25/2022] Open
Abstract
The t(8;14)(q24.1;q32), the cytogenetic hallmark of Burkitt's lymphoma, is also found, but rarely, in cases of chronic lymphocytic leukemia (CLL). Such translocation typically results in a MYC-IGH@ fusion subsequently deregulating and overexpressing MYC on der 14q32. In CLL, atypical rearrangements resulting in its gain or loss, within or outside of IGH@ or MYC locus, have been reported, but their clinical significance remains uncertain. Herein, we report a 67 year-old male with complex cytogenetic findings of apparently balanced t(8;14) and unreported complex rearrangements of IGH@ and MYC loci. His clinical, morphological and immunophenotypic features were consistent with the diagnosis of CLL.Interphase FISH studies revealed deletions of 11q22.3 and 13q14.3, and an extra copy of IGH@, indicative of rearrangement. Karyotype analysis showed an apparently balanced t(8;14)(q24.1;q32). Sequential GPG-metaphase FISH studies revealed abnormal signal patterns: rearrangement of IGH break apart probe with the 5'-IGH@ on derivative 8q24.1 and the 3'-IGH@ retained on der 14q; absence of MYC break apart-specific signal on der 8q; and, the presence of unsplit 5'-MYC-3' break apart probe signals on der 14q. The breakpoint on 8q24.1 was found to be at least 400 Kb upstream of 5' of MYC. In addition, FISH studies revealed two abnormal clones; one with 13q14.3 deletion, and the other, with concurrent 11q deletion and atypical rearrangements. Chromosome microarray analysis (CMA) detected a 7.1 Mb deletion on 11q22.3-q23.3 including ATM, a finding consistent with FISH results. While no significant copy number gain or loss observed on chromosomes 8, 12 and 13, a 455 Kb microdeletion of uncertain clinical significance was detected on 14q32.33. Immunohistochemistry showed co-expression of CD19, CD5, and CD23, positive ZAP-70 expression and absence of MYC expression. Overall findings reveal an apparently balanced t(8;14) and atypical complex rearrangements involving 3'-IGH@ and a breakpoint at least 400 Kb upstream of MYC, resulting in the relocation of the intact 5'-MYC-3' from der 8q, and apposition to 3'-IGH@ at der 14q. This case report provides unique and additional cytogenetic data that may be of clinical significance in such a rare finding in CLL. It also highlights the utility of conventional and sequential metaphase FISH in understanding complex chromosome anomalies and their association with other clinical findings in patients with CLL. To the best of our knowledge, this is the first CLL reported case with such an atypical rearrangement in a patient with a negative MYC expression.
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Affiliation(s)
- Ina Amarillo
- Clinical Molecular Cytogenetics Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA.,Department of Pathology & Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA
| | - Peter H Bui
- Clinical Molecular Cytogenetics Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA.,Department of Pathology & Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA
| | - Sibel Kantarci
- Clinical Molecular Cytogenetics Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA.,Department of Pathology & Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA
| | - Nagesh Rao
- Clinical Molecular Cytogenetics Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA.,Department of Pathology & Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA
| | - Brit S Shackley
- Department of Pathology & Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA
| | - Rolando García
- Cytogenetics, UT Southwestern Medical Center, Dallas, TX, USA
| | - Carlos A Tirado
- Clinical Molecular Cytogenetics Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA.,Department of Pathology & Laboratory, Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, USA
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