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Alshahrani A, Skarratt KK, Robledo KP, Hassanvand M, Tang B, Fuller SJ. Differential Levels of mRNAs in Normal B Lymphocytes, Monoclonal B Lymphocytosis and Chronic Lymphocytic Leukemia Cells from the Same Family Identify Susceptibility Genes. Oncol Ther 2021; 9:621-634. [PMID: 34622420 PMCID: PMC8593151 DOI: 10.1007/s40487-021-00172-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/23/2021] [Indexed: 12/04/2022] Open
Abstract
INTRODUCTION People with a family history of chronic lymphocytic leukemia (F-CLL) have an increased risk of monoclonal B lymphocytosis (F-MBL), which is found in up to 18% of first-degree relatives of patients compared to 5% of the total population. This may indicate that the presence of an F-MBL in the relative of a F-CLL patient is due to genetic susceptibility. In this study, we hypothesized that progressive changes in gene expression result in malignant transformation of B lymphocytes to F-MBL, and subsequent alterations in gene expression occur before overt F-CLL develops. The aim of this study of affected and unaffected individuals from a family with multiple CLL cases was to compare mRNA expression levels in control B-lymphocytes, pre-malignant F-MBL and malignant F-CLL cells. METHODS To identify inherited changes in gene expression, a high-resolution DNA microarray was used to identify differentially abundant mRNAs in age-matched cases of F-MBL (n = 4), F-CLL (n = 2) and unaffected family relatives (F-Controls, n = 3) within one family. These were then compared to non-kindred controls (NK-Controls, n = 3) and sporadic CLL (S-CLL) cases (n = 6). RESULTS Seven differentially abundant mRNAs were identified against similar genetic backgrounds of the family: GRASP and AC016745.3 were decreased in F-MBL and further decreased in F-CLL compared to F-Controls, whereas C11orf80 and METTL8 were progressively increased. PARP3 was increased in F-MBL compared to F-Controls but was decreased in F-CLL compared to F-MBL. Compared to F-Controls, levels of ROR1 and LEF1 were similarly increased in F-MBL and F-CLL. For six of the genes, there were no differences in mRNA levels between S-CLL and F-CLL; however PARP3 was higher in S-CLL. CONCLUSION These results are consistent with the hypothesis that changes in expression of specific genes contribute to transformation from normal lymphocytes to MBL and CLL.
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Affiliation(s)
- Abdullah Alshahrani
- Department of Medicine, Sydney Medical School Nepean, Nepean Hospital, University of Sydney, Penrith, NSW, 2750, Australia
- College of Applied Medical Sciences, King Khalid University, Guraiger, Abha, 62529, Kingdom of Saudi Arabia
| | - Kristen K Skarratt
- Department of Medicine, Sydney Medical School Nepean, Nepean Hospital, University of Sydney, Penrith, NSW, 2750, Australia
| | - Kristy P Robledo
- NHMRC Clinical Trials Centre, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Maryam Hassanvand
- Department of Medicine, Sydney Medical School Nepean, Nepean Hospital, University of Sydney, Penrith, NSW, 2750, Australia
| | - Benjamin Tang
- Department of Medicine, Sydney Medical School Nepean, Nepean Hospital, University of Sydney, Penrith, NSW, 2750, Australia
| | - Stephen J Fuller
- Department of Medicine, Sydney Medical School Nepean, Nepean Hospital, University of Sydney, Penrith, NSW, 2750, Australia.
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Sava GP, Speedy HE, Houlston RS. Candidate gene association studies and risk of chronic lymphocytic leukemia: a systematic review and meta-analysis. Leuk Lymphoma 2014; 55:160-7. [PMID: 23647060 DOI: 10.3109/10428194.2013.800197] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
To evaluate the contribution of association studies of candidate polymorphisms to inherited predisposition to chronic lymphocytic leukemia (CLL), we conducted a systematic review and meta-analysis of published case-control studies. We identified 36 studies which reported on polymorphic variation in 19 genes and CLL risk. Out of the 23 polymorphic variants, significant associations (p < 0.05) were seen in pooled analyses for only four variants: MDR1, rs1045642; LTA, rs2239704; CD38, rs6449182; and IFNGR1, rs4896243. These findings should be interpreted cautiously, as the estimated false positive report probabilities (FPRPs) for each association were not noteworthy (i.e. FPRP > 0.2). While studies of candidate polymorphisms may be an attractive means of identifying risk factors for CLL, the limited power of published studies to demonstrate statistically significant associations makes it essential that future analyses be based on sample sizes well-powered to identify variants having modest effects on CLL risk.
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MESH Headings
- Apoptosis/genetics
- Carcinogens/metabolism
- DNA Repair/genetics
- Genetic Association Studies
- Genetic Predisposition to Disease
- Humans
- Immunity
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/immunology
- Leukemia, Lymphocytic, Chronic, B-Cell/metabolism
- Odds Ratio
- Polymorphism, Genetic
- Risk
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Affiliation(s)
- Georgina P Sava
- Division of Genetics and Epidemiology, Institute of Cancer Research , Sutton, Surrey , UK
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Kim HJ, Im SW, Jargal G, Lee S, Yi JH, Park JY, Sung J, Cho SI, Kim JY, Kim JI, Seo JS. Heritabilities of facial measurements and their latent factors in korean families. Genomics Inform 2013; 11:83-92. [PMID: 23843774 PMCID: PMC3704931 DOI: 10.5808/gi.2013.11.2.83] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 05/16/2013] [Accepted: 05/23/2013] [Indexed: 11/20/2022] Open
Abstract
Genetic studies on facial morphology targeting healthy populations are fundamental in understanding the specific genetic influences involved; yet, most studies to date, if not all, have been focused on congenital diseases accompanied by facial anomalies. To study the specific genetic cues determining facial morphology, we estimated familial correlations and heritabilities of 14 facial measurements and 3 latent factors inferred from a factor analysis in a subset of the Korean population. The study included a total of 229 individuals from 38 families. We evaluated a total of 14 facial measurements using 2D digital photographs. We performed factor analysis to infer common latent variables. The heritabilities of 13 facial measurements were statistically significant (p < 0.05) and ranged from 0.25 to 0.61. Of these, the heritability of intercanthal width in the orbital region was found to be the highest (h (2) = 0.61, SE = 0.14). Three factors (lower face portion, orbital region, and vertical length) were obtained through factor analysis, where the heritability values ranged from 0.45 to 0.55. The heritability values for each factor were higher than the mean heritability value of individual original measurements. We have confirmed the genetic influence on facial anthropometric traits and suggest a potential way to categorize and analyze the facial portions into different groups.
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Affiliation(s)
- Hyun-Jin Kim
- Genomic Medicine Institute, Medical Research Center, Seoul National University, Seoul 110-799, Korea. ; Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 110-799, Korea
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4
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Speedy HE, Sava G, Houlston RS. Inherited susceptibility to CLL. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 792:293-308. [PMID: 24014302 DOI: 10.1007/978-1-4614-8051-8_13] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
Chronic lymphocytic leukaemia (CLL) is the most common lymphoid malignancy in Western countries, accounting for around a quarter of all leukaemias. Despite a strong familial basis to CLL, with risks in first-degree relatives of CLL cases being increased around sevenfold, the inherited genetic basis of CLL is currently largely unknown. The failure of genetic studies of CLL families to provide support for a major disease-causing locus has suggested a model of susceptibility based on the co-inheritance of multiple low-risk variants, some of which will be common. Recent genome-wide association studies of CLL have vindicated this model of inherited susceptibility to CLL, identifying common variants at multiple independent loci influencing risk. Here we review the evidence for inherited genetic predisposition to CLL and what the currently identified risk loci are telling us about the biology of CLL development.
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MESH Headings
- Genetic Predisposition to Disease
- Genome-Wide Association Study
- Genotype
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/epidemiology
- Leukemia, Lymphocytic, Chronic, B-Cell/etiology
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/immunology
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Affiliation(s)
- Helen E Speedy
- Division of Genetics and Epidemiology, Institute of Cancer Research, Sutton, Surrey, SM2 5NG, UK
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Coombs CC, Falchi L, Weinberg JB, Ferrajoli A, Lanasa MC. Chronic lymphocytic leukemia in African Americans. Leuk Lymphoma 2012; 53:2326-9. [PMID: 22646816 DOI: 10.3109/10428194.2012.698276] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Chronic lymphocytic leukemia (CLL) is the most prevalent leukemia in the United States with almost 4390 attributable deaths per year. Epidemiologic data compiled by the Surveillance, Epidemiology and End Results (SEER) program identifies important differences in incidence and survival for African Americans with CLL. Although the incidence of CLL is lower among African Americans than among Caucasians (4.6 and 6.2 per 100 000 men, respectively), age-adjusted survival is inferior. African American patients with CLL are almost twice as likely to die from a CLL-related complication in the first 5 years after diagnosis as are Caucasian patients with CLL. The biologic basis for these observations is almost entirely unexplored, and a comprehensive clinical analysis of African American patients with CLL is lacking. This is the subject of the present review.
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Sherborne AL, Houlston RS. What are genome-wide association studies telling us about B-cell tumor development? Oncotarget 2011; 1:367-72. [PMID: 21307401 DOI: 10.18632/oncotarget.100904] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
It has long been speculated that common genetic variation influences the development of B-cell malignancy, however until recently evidence for this assertion was lacking. The advent of genome-wide association studies (GWAS) has allowed the search for this class of susceptibility allele to be conducted on a genome-wide basis. Recent GWAS of chronic lymphocytic leukemia (CLL) and acute lymphoblastic leukemia (ALL) have identified novel disease genes for CLL and ALL and underscore the importance of polymorphic variation in B-cell development genes as determinants of leukemia risk.
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Affiliation(s)
- Amy L Sherborne
- Section of Cancer Genetics, Institute of Cancer Research, Sutton, Surrey, SM2 5NG, UK.
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Rund D. Genotyping chronic lymphocytic leukemia in China: East meets West. Leuk Lymphoma 2011; 52:941-2. [PMID: 21599588 DOI: 10.3109/10428194.2011.579211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Deborah Rund
- Hematology Department, Hebrew University-Hadassah Medical Organization, Jerusalem, Israel.
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Im SW, Kim HJ, Lee MK, Yi JH, Jargal G, Sung J, Cho SI, Kim JI. Genome-wide linkage analysis for ocular and nasal anthropometric traits in a Mongolian population. Exp Mol Med 2011; 42:799-804. [PMID: 21150245 DOI: 10.3858/emm.2010.42.12.080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Anthropometric traits for eyes and nose are complex quantitative traits influenced by genetic and environmental factors. To date, there have been few reports on the contribution of genetic influence to these traits in Asian populations. The aim of this study was to determine the genetic effect and quantitative trait locus (QTL) of seven traits eyes- and nose-related anthropometric measurements in an isolated Mongolian population. Frontal and lateral photographs were obtained from 1,014 individuals (434 males and 580 females) of Mongolian origin. A total of 349 short tandem repeat markers on 22 autosomes were genotyped for each individual. Heritability estimates of the seven ocular and nasal traits, adjusted for significant covariates, ranged from 0.48 to 0.90, providing evidence for a genetic influence. Variance-component linkage analyses revealed 10 suggestive linkage signals on 5q34 (LOD=3.2), 18q12.2 (LOD=2.7), 5q15 (LOD=2.0), 9q34.2 (LOD=1.9), 5q34 (LOD=1.9), 17q22 (LOD=1.9), 13q33.3 (LOD=2.7), 1q36.22 (LOD=1.9), 4q32.1 (LOD=2.1) and 15q22.31 (LOD=2.9). Our study provides the first evidence that genetics influences nasal and ocular traits in a Mongolian population. Additional collaborative efforts will further extend our understanding of the link between genetic factors and human anthropometric traits.
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Affiliation(s)
- Sun-Wha Im
- Genomic Medicine Institute, Medical Research Center, Seoul National University, Seoul 100-799, Korea
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Abstract
In recent years, several association analysis methods for case-control studies have been developed. However, as we turn towards the identification of single nucleotide polymorphisms (SNPs) for prognosis, there is a need to develop methods for the identification of SNPs in high dimensional data with survival outcomes. Traditional methods for the identification of SNPs have some drawbacks. First, the majority of the approaches for case-control studies are based on single SNPs. Second, SNPs that are identified without incorporating biological knowledge are more difficult to interpret. Random forests has been found to perform well in gene expression analysis with survival outcomes. In this paper we present the first pathway-based method to correlate SNP with survival outcomes using a machine learning algorithm. We illustrate the application of pathway-based analysis of SNPs predictive of survival with a data set of 192 multiple myeloma patients genotyped for 500,000 SNPs. We also present simulation studies that show that the random forests technique with log-rank score split criterion outperforms several other machine learning algorithms. Thus, pathway-based survival analysis using machine learning tools represents a promising approach for the identification of biologically meaningful SNPs associated with disease.
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Churpek JE, Onel K. Heritability of hematologic malignancies: from pedigrees to genomics. Hematol Oncol Clin North Am 2010; 24:939-72. [PMID: 20816581 DOI: 10.1016/j.hoc.2010.06.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Many hematologic malignancies have an underlying heritable component. Although not as well characterized as the acquired genetic abnormalities that define important prognostic and therapeutic subgroups of myeloid and lymphoid neoplasms, investigations are beginning to unravel the role of germline genetic variation in the predisposition to hematologic malignancies. Information gained from the study of striking family pedigrees, epidemiologic data, and candidate genes are now being combined with unbiased genome-wide investigations to outline the network of genetic abnormalities that contribute to hematologic malignancy risk. This article reviews the current understanding of the heritability of hematologic malignancies in the genomics era.
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Affiliation(s)
- Jane E Churpek
- Section of Hematology/Oncology, Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
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11
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Genetic variation and risk of chronic lymphocytic leukaemia. Semin Cancer Biol 2010; 20:363-9. [PMID: 20833250 DOI: 10.1016/j.semcancer.2010.08.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Revised: 08/25/2010] [Accepted: 08/27/2010] [Indexed: 11/22/2022]
Abstract
Chronic lymphocytic leukaemia (CLL) is the most common form of lymphoid malignancy in Western countries, accounting for around a quarter of all leukaemias. Evidence from epidemiological and family studies have provided evidence for familial clustering of CLL compatible with inherited genetic predisposition to CLL. Direct evidence for genetic susceptibility has been provided by a recent genome wide association study of CLL which has identified common variants at 10 different loci which influence CLL risk. Here we review the current knowledge regarding the allelic architecture of susceptibility to CLL and what the currently identified risk loci are telling us regarding disease aetiology.
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12
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Sherborne AL, Houlston RS. What are genome-wide association studies telling us about B-cell tumor development? Oncotarget 2010; 1:367-372. [PMID: 21307401 PMCID: PMC3157732 DOI: 10.18632/oncotarget.169] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Accepted: 08/16/2010] [Indexed: 11/25/2022] Open
Abstract
It has long been speculated that common genetic variation influences the development of B-cell malignancy, however until recently evidence for this assertion was lacking. The advent of genome-wide association studies (GWAS) has allowed the search for this class of susceptibility allele to be conducted on a genome-wide basis. Recent GWAS of chronic lymphocytic leukemia (CLL) and acute lymphoblastic leukemia (ALL) have identified novel disease genes for CLL and ALL and underscore the importance of polymorphic variation in B-cell development genes as determinants of leukemia risk.
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13
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Sulda ML, Kuss BJ, Hall RK, Bailey S, Macardle PJ. Clinical utility of molecular and flow cytometric markers in chronic lymphocytic leukaemia. Intern Med J 2010; 42:137-46. [PMID: 20561095 DOI: 10.1111/j.1445-5994.2010.02294.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Chronic lymphocytic leukaemia (CLL) is a clinically heterogeneous disease. While immunoglobulin variable region heavy chain (IgVH) mutational status remains the 'gold standard' in molecular prognostication, a range of additional markers is increasingly being used in clinical trials. As awareness of trial data increases, requests to determine these prognostic markers for new CLL patients are becoming more prevalent in Australia. AIM To explore the clinical utility of currently available prognostic markers for CLL in an Australian cohort. METHODS IgVH mutational status and gene usage was determined and compared with other reported immunophenotypic markers, cytogenetics and clinical outcome as defined by treatment-free survival (TFS), lymphocyte doubling time and clinical stage in a cohort of 65 CLL patients. RESULTS An unmutated IgVH gene, high expression of CD38, ZAP-70, CD25, CD49d, CD54 or low expression of CD49c was associated with shorter TFS indicating an adverse clinical prognosis in our cohort. High expression of each of CD38, ZAP-70, CD49d and CD54 was significantly associated with an unmutated IgVH gene; however, associations were not absolute. IgVH and CD25 expression retained their significance in multivariate analysis. Concordant CD25(high) /IgVH unmutated CLL patients had the shortest median TFS interval (40 months) in our cohort. CONCLUSIONS Molecular and immunophenotypic markers remain useful as adjuncts to clinical prognostication; however, as single parameters they are unable to dictate the timing of therapeutic intervention. The combined use of CD25 and IgVH mutational status may be clinically relevant to CLL prognostication while also providing insight into the biological pathways involved in disease progression.
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Affiliation(s)
- M L Sulda
- Department of Haematology and Genetic Pathology, Flinders Medical Centre School of Biological Sciences, Flinders University, Adelaide, South Australia, Australia
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Tegg EM, Thomson RJ, Stankovich J, Banks A, Flowers C, McWhirter R, Panton J, Piaszczyk A, Bahlo M, Marsden KA, Lowenthal RM, Foote SJ, Dickinson JL. Evidence for a common genetic aetiology in high-risk families with multiple haematological malignancy subtypes. Br J Haematol 2010; 150:456-62. [DOI: 10.1111/j.1365-2141.2010.08267.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Houlston RS. Low-penetrance susceptibility to hematological malignancy. Curr Opin Genet Dev 2010; 20:245-50. [DOI: 10.1016/j.gde.2010.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Revised: 03/02/2010] [Accepted: 03/15/2010] [Indexed: 01/01/2023]
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Crowther-Swanepoel D, Houlston RS. The molecular basis of familial chronic lymphocytic leukemia. Haematologica 2009; 94:606-9. [PMID: 19407315 DOI: 10.3324/haematol.2009.006296] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Our understanding of the genetic basis of chronic lymphocytic leukemia is only just starting to be recognized. This perspective article by Drs. Crowther-Swanepoel and Houlston provides an up-to-date review the molecular epidemiology of chronic lymphocytic leukemia, with emphasis on the integration of biology and genomics.
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Goldin LR, Björkholm M, Kristinsson SY, Turesson I, Landgren O. Elevated risk of chronic lymphocytic leukemia and other indolent non-Hodgkin's lymphomas among relatives of patients with chronic lymphocytic leukemia. Haematologica 2009; 94:647-53. [PMID: 19286886 DOI: 10.3324/haematol.2008.003632] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Previous studies have shown increased familial risk for chronic lymphocytic leukemia. In the most comprehensive study to date, we evaluated risk of chronic lymphocytic leukemia and lymphoproliferative disorders among first-degree relatives of chronic lymphocytic leukemia cases compared to first-degree relatives of controls. DESIGN AND METHODS Population-based registry data from Sweden were used to evaluate outcomes in 26,947 first-degree relatives of 9,717 chronic lymphocytic leukemia patients (diagnosed 1958-2004) compared with 107,223 first-degree relatives of 38,159 matched controls. Using a marginal survival model, we calculated relative risks (RR) and 95% confidence intervals as measures of familial aggregation. RESULTS Compared to relatives of controls, relatives of chronic lymphocytic leukemia patients had an increased risk for chronic lymphocytic leukemia (RR=8.5, 6.1-11.7) and other non-Hodgkin's lymphomas (NHLs) (RR=1.9, 1.5-2.3). Evaluating NHL subtypes, we found a striking excess of indolent B-cell NHL, specifically lymphoplasmacytic lymphoma/Waldenström macroglobulinemia and hairy cell leukemia. No excesses of aggressive B-cell or T-cell lymphomas were found. There was no statistical excess of Hodgkin's lymphoma, multiple myeloma, or the precursor condition, monoclonal gammopathy of undetermined significance, among chronic lymphocytic leukemia relatives. CONCLUSIONS These familial aggregations are striking and provide novel clues to research designed to uncover early pathogenetic mechanisms in chronic lymphocytic leukemia including studies to identify germ line susceptibility genes. However, clinicians should counsel their chronic lymphocytic leukemia patients emphasizing that because the baseline population risks are low, the absolute risk for a first-degree relative to develop chronic lymphocytic leukemia or another indolent lymphoma is low. At this time, an increased medical surveillance of first-degree relatives of chronic lymphocytic leukemia patients has no role outside research studies.
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Affiliation(s)
- Lynn R Goldin
- Genetic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, 6120 Executive Blvd., Bethesda, MD 20892, USA.
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Enjuanes A, Benavente Y, Bosch F, Martin-Guerrero I, Colomer D, Perez-Alvarez S, Reina O, Ardanaz MT, Jares P, Garcia-Orad A, Pujana MA, Montserrat E, de Sanjose S, Campo E. Genetic Variants in Apoptosis and Immunoregulation-Related Genes Are Associated with Risk of Chronic Lymphocytic Leukemia. Cancer Res 2008; 68:10178-86. [DOI: 10.1158/0008-5472.can-08-2221] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Houlston RS, Catovsky D. Familial chronic lymphocytic leukemia. Curr Hematol Malig Rep 2008; 3:221-5. [PMID: 20425469 DOI: 10.1007/s11899-008-0031-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The role of inherited genetic factors in the etiology of chronic lymphocytic leukemia (CLL) and other B-cell lymphoproliferative disorders is now well established. Significant familial aggregation of CLL and B-cell lymphoproliferative disorders has been demonstrated, but the mode of inheritance is unknown. Identification of genes that when mutated confer an increased risk of these diseases is of immediate clinical relevance because it may offer clues to pathogenesis and highlight possible therapeutic targets. Furthermore, identification of these genes provides a greater understanding of the mechanisms of B-cell tumorigenesis in general. This article reviews current knowledge relating to inherited susceptibility to CLL and strategies that are being used to identify disease-causing mutations.
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Affiliation(s)
- Richard S Houlston
- Section of Cancer Genetics, Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey, SM2 5NG, UK.
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