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Lassen FH, Venkatesh SS, Baya N, Hill B, Zhou W, Bloemendal A, Neale BM, Kessler BM, Whiffin N, Lindgren CM, Palmer DS. Exome-wide evidence of compound heterozygous effects across common phenotypes in the UK Biobank. CELL GENOMICS 2024; 4:100602. [PMID: 38944039 PMCID: PMC11293579 DOI: 10.1016/j.xgen.2024.100602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 03/11/2024] [Accepted: 06/07/2024] [Indexed: 07/01/2024]
Abstract
The phenotypic impact of compound heterozygous (CH) variation has not been investigated at the population scale. We phased rare variants (MAF ∼0.001%) in the UK Biobank (UKBB) exome-sequencing data to characterize recessive effects in 175,587 individuals across 311 common diseases. A total of 6.5% of individuals carry putatively damaging CH variants, 90% of which are only identifiable upon phasing rare variants (MAF < 0.38%). We identify six recessive gene-trait associations (p < 1.68 × 10-7) after accounting for relatedness, polygenicity, nearby common variants, and rare variant burden. Of these, just one is discovered when considering homozygosity alone. Using longitudinal health records, we additionally identify and replicate a novel association between bi-allelic variation in ATP2C2 and an earlier age at onset of chronic obstructive pulmonary disease (COPD) (p < 3.58 × 10-8). Genetic phase contributes to disease risk for gene-trait pairs: ATP2C2-COPD (p = 0.000238), FLG-asthma (p = 0.00205), and USH2A-visual impairment (p = 0.0084). We demonstrate the power of phasing large-scale genetic cohorts to discover phenome-wide consequences of compound heterozygosity.
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Affiliation(s)
- Frederik H Lassen
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK; Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK.
| | - Samvida S Venkatesh
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK; Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK
| | - Nikolas Baya
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK; Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK
| | - Barney Hill
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK
| | - Wei Zhou
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Analytical and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Alex Bloemendal
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Novo Nordisk Center for Genomic Mechanisms of Disease, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Data Sciences Platform, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Benjamin M Neale
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Analytical and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Benedikt M Kessler
- Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Nicola Whiffin
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK; Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK; Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Cecilia M Lindgren
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK; Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK; Nuffield Department of Population Health, Medical Sciences Division, University of Oxford, Oxford, UK.
| | - Duncan S Palmer
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK; Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Nuffield Department of Population Health, Medical Sciences Division, University of Oxford, Oxford, UK.
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Lassen FH, Venkatesh SS, Baya N, Zhou W, Bloemendal A, Neale BM, Kessler BM, Whiffin N, Lindgren CM, Palmer DS. Exome-wide evidence of compound heterozygous effects across common phenotypes in the UK Biobank. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.06.29.23291992. [PMID: 37461573 PMCID: PMC10350147 DOI: 10.1101/2023.06.29.23291992] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Exome-sequencing association studies have successfully linked rare protein-coding variation to risk of thousands of diseases. However, the relationship between rare deleterious compound heterozygous (CH) variation and their phenotypic impact has not been fully investigated. Here, we leverage advances in statistical phasing to accurately phase rare variants (MAF ~ 0.001%) in exome sequencing data from 175,587 UK Biobank (UKBB) participants, which we then systematically annotate to identify putatively deleterious CH coding variation. We show that 6.5% of individuals carry such damaging variants in the CH state, with 90% of variants occurring at MAF < 0.34%. Using a logistic mixed model framework, systematically accounting for relatedness, polygenic risk, nearby common variants, and rare variant burden, we investigate recessive effects in common complex diseases. We find six exome-wide significant (P < 1.68 × 10 - 7 ) and 17 nominally significant (P < 5.25 × 10 - 5 ) gene-trait associations. Among these, only four would have been identified without accounting for CH variation in the gene. We further incorporate age-at-diagnosis information from primary care electronic health records, to show that genetic phase influences lifetime risk of disease across 20 gene-trait combinations (FDR < 5%). Using a permutation approach, we find evidence for genetic phase contributing to disease susceptibility for a collection of gene-trait pairs, including FLG-asthma (P = 0.00205 ) and USH2A-visual impairment (P = 0.0084 ). Taken together, we demonstrate the utility of phasing large-scale genetic sequencing cohorts for robust identification of the phenome-wide consequences of compound heterozygosity.
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Affiliation(s)
- Frederik H. Lassen
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, United Kingdom
| | - Samvida S. Venkatesh
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, United Kingdom
| | - Nikolas Baya
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, United Kingdom
| | - Wei Zhou
- Program in Medical and Population Genetics Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Stanley Center for Psychiatric Research Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Analytical and Translational Genetics Unit, Department of Medicine Massachusetts General Hospital, Boston, MA, USA
| | - Alex Bloemendal
- Program in Medical and Population Genetics Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Novo Nordisk Center for Genomic Mechanisms of Disease Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Data Sciences Platform Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Benjamin M. Neale
- Program in Medical and Population Genetics Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Stanley Center for Psychiatric Research Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Analytical and Translational Genetics Unit, Department of Medicine Massachusetts General Hospital, Boston, MA, USA
| | - Benedikt M. Kessler
- Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Nicola Whiffin
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, United Kingdom
- Program in Medical and Population Genetics Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Cecilia M. Lindgren
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, United Kingdom
- Nuffield Department of Population Health Health, Medical Sciences Division University of Oxford, Oxford, United Kingdom
| | - Duncan S. Palmer
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, United Kingdom
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3
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Walsh K, Park J. Far From the Biliary Tree: A Case of Overlapping Autoimmune Liver Disease in a Patient Presenting With Sicca Symptoms. Cureus 2022; 14:e26760. [PMID: 35967173 PMCID: PMC9365501 DOI: 10.7759/cureus.26760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2022] [Indexed: 11/16/2022] Open
Abstract
Primary biliary cholangitis (PBC) is a chronic autoimmune condition with many extrahepatic manifestations that are commonly encountered as a patient's primary presenting complaints. Rarely, PBC co-exists as an “overlapping syndrome” with other liver-related autoimmune conditions such as autoimmune hepatitis (AIH). Presented is a rare case of PBC with features of AIH diagnosed in a patient who initially presented with hemoptysis and worsened sicca symptoms due to advanced Sjögren’s syndrome. The patient had a three-year evolution of abnormal liver biochemistry and was found to be a heterozygous carrier for hereditary hemochromatosis (H63D mutation). Given that patients with PBC-AIH are at an increased risk of complications compared to isolated disease from either disorder, early diagnosis and prompt management can help spare patients from cirrhosis, liver failure and transplantation, or even death.
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Hagström H, Ndegwa N, Jalmeus M, Ekstedt M, Posserud I, Rorsman F, Nyhlin N, Klintman D, Werner M, Marschall HU, Askling J, Stål P. Morbidity, risk of cancer and mortality in 3645 HFE mutations carriers. Liver Int 2021; 41:545-553. [PMID: 33450138 DOI: 10.1111/liv.14792] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/26/2020] [Accepted: 01/09/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS Mutations in the HFE gene can lead to hereditary haemochromatosis (HH) and have been suggested to increase the risk of extra-hepatic diseases, especially breast and colorectal cancer. Here we investigated long-term outcomes of Swedish patients with HFE mutations. METHODS We identified 3645 patients with a homozygous p.C282Y (62%) or a compound heterozygous p.C282Y/p.H63D (38%) mutation from eight centres in Sweden between 1997 and 2017. These were matched 1:10 by age, sex and county of residence to reference individuals from the general population. We ascertained incident outcomes until the end of 2017 by linkage to national registers. Studied outcomes were HH, cirrhosis, hepatocellular carcinoma (HCC), breast cancer (in women), colorectal cancer, type 1 and 2 diabetes, hypothyroidism, Parkinson's disease and mortality. Cox proportional hazards regression was used to estimate hazard ratios for these outcomes. RESULTS Median age at diagnosis was 52 years, 44% were females. During a mean follow-up of 7.9 years, we found an increased risk for HCC, HH, cirrhosis, type 2 diabetes, osteoarthritis and death. Excess mortality was only seen in men. No increased risk was seen for colorectal or breast cancer. Liver-related outcomes were rare, with a cumulative incidence of <1%. CONCLUSIONS Individuals found to be HFE mutation carriers in a university hospital setting had an increased risk for mortality in men, along with increased risks of cirrhosis, HCC, diabetes type 2, and osteoarthritis. In general, the absolute risk for adverse outcomes was low and no increased risk for colon or breast cancer was observed.
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Affiliation(s)
- Hannes Hagström
- Division of Hepatology, Department of Upper GI diseases, Karolinska University Hospital, Stockholm, Sweden.,Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden.,Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Nelson Ndegwa
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Division of Surgery, Department of Clinical Science Intervention and Technology, Karolinska Institutet, and Oesophageal and Gastric Cancer Unit, Karolinska University Hospital, Stockholm, Sweden
| | - Molly Jalmeus
- Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Mattias Ekstedt
- Division of Diagnostics and Specialist Medicine, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Iris Posserud
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Fredrik Rorsman
- Department of Gastroenterology and Hepatology, Uppsala University Hospital, Uppsala, Sweden
| | - Nils Nyhlin
- Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Daniel Klintman
- Department of Gastroenterology and Hepatology, Skåne University Hospital,, Malmö, Sweden
| | - Mårten Werner
- Department of Public Health and Clinical Medicine, Medicine, Umeå University, Umeå, Sweden
| | - Hanns-Ulrich Marschall
- Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Johan Askling
- Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Per Stål
- Division of Hepatology, Department of Upper GI diseases, Karolinska University Hospital, Stockholm, Sweden.,Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden
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Forciniti S, Greco L, Grizzi F, Malesci A, Laghi L. Iron Metabolism in Cancer Progression. Int J Mol Sci 2020; 21:E2257. [PMID: 32214052 PMCID: PMC7139548 DOI: 10.3390/ijms21062257] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/21/2020] [Accepted: 03/22/2020] [Indexed: 12/11/2022] Open
Abstract
Iron is indispensable for cell metabolism of both normal and cancer cells. In the latter, several disruptions of its metabolism occur at the steps of tumor initiation, progression and metastasis. Noticeably, cancer cells require a large amount of iron, and exhibit a strong dependence on it for their proliferation. Numerous iron metabolism-related proteins and signaling pathways are altered by iron in malignancies, displaying the pivotal role of iron in cancer. Iron homeostasis is regulated at several levels, from absorption by enterocytes to recycling by macrophages and storage in hepatocytes. Mutations in HFE gene alter iron homeostasis leading to hereditary hemochromatosis and to an increased cancer risk because the accumulation of iron induces oxidative DNA damage and free radical activity. Additionally, the iron capability to modulate immune responses is pivotal in cancer progression. Macrophages show an iron release phenotype and potentially deliver iron to cancer cells, resulting in tumor promotion. Overall, alterations in iron metabolism are among the metabolic and immunological hallmarks of cancer, and further studies are required to dissect how perturbations of this element relate to tumor development and progression.
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Affiliation(s)
- Stefania Forciniti
- Humanitas Clinical and Research Center, IRCCS, Department of Gastroenterology—Laboratory of Molecular Gastroenterology, Rozzano, 20089 Milan, Italy; (S.F.); (L.G.)
| | - Luana Greco
- Humanitas Clinical and Research Center, IRCCS, Department of Gastroenterology—Laboratory of Molecular Gastroenterology, Rozzano, 20089 Milan, Italy; (S.F.); (L.G.)
| | - Fabio Grizzi
- Department of Immunology and Inflammation, Humanitas Clinical and Research Center, Via Manzoni 56, Rozzano, 20089 Milan, Italy;
| | - Alberto Malesci
- Humanitas Clinical and Research Center, IRCCS, Department of Gastroenterology, Rozzano, 20089 Milan, Italy;
| | - Luigi Laghi
- Humanitas Clinical and Research Center, IRCCS, Department of Gastroenterology—Laboratory of Molecular Gastroenterology, Rozzano, 20089 Milan, Italy; (S.F.); (L.G.)
- Department of Medicine and Surgery, University of Parma, 43100 Parma, Italy
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Juzėnas S, Kupčinskas J, Valantienė I, Šumskienė J, Petrenkienė V, Kondrackienė J, Kučinskas L, Kiudelis G, Skiecevičienė J, Kupčinskas L. Association of HFE gene C282Y and H63D mutations with liver cirrhosis in the Lithuanian population. MEDICINA-LITHUANIA 2016; 52:269-275. [PMID: 27816425 DOI: 10.1016/j.medici.2016.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 07/27/2016] [Accepted: 09/13/2016] [Indexed: 01/16/2023]
Abstract
BACKGROUND AND OBJECTIVE Liver cirrhosis is the end-stage disease of chronic liver injury. Due to differences in the natural course of chronic liver diseases, identification of genetic factors that influence individual outcomes is warranted. HFE-linked hereditary hemochromatosis (HH) predisposes disease progression to cirrhosis; however, the role of heterozygous C282Y or H63D mutations in the development of cirrhosis in the presence of other etiological factors is still debated. The aim of this study was to determine the association between heterozygous C282Y and H63D mutations and non-HH liver cirrhosis in Lithuanian population. MATERIALS AND METHODS The patient cohort consisted of 209 individuals. Diagnosis of cirrhosis was confirmed by clinical, laboratory parameters, liver biopsy, and radiological imaging. Control samples were obtained from 1005 randomly selected unrelated healthy individuals. HFE gene mutations were determined using the PCR-RFLP method. RESULTS The most common causes of cirrhosis were hepatitis C (33.9%), hepatitis B (13.6%), and alcohol (25.8%). C282Y allele was associated with the presence of cirrhosis (OR=2.07; P=0.005); this was also observed under recessive model for C282Y (OR=2.06, P=0.008). The prevalence of C282Y allele was higher in cirrhotic men than in controls (7.0% vs. 2.8%, P=0.002). The carriage of H63D risk allele (OR=1.54; P=0.02), heterozygous C282Y/wt and homozygous H63D/H63D genotypes were associated with liver cirrhosis in males (OR=2.48, P=0.008, and OR=4.13, P=0.005, respectively). CONCLUSIONS Heterozygous C282Y mutation of the HFE gene was associated with liver cirrhosis in the Lithuanian population. In gender-related analysis, heterozygous C282Y and homozygous H63D mutations were linked to liver cirrhosis in men, not in women.
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Affiliation(s)
- Simonas Juzėnas
- Institute for Digestive Research, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Juozas Kupčinskas
- Institute for Digestive Research, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania; Department of Gastroenterology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Irena Valantienė
- Institute for Digestive Research, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania; Department of Gastroenterology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Jolanta Šumskienė
- Department of Gastroenterology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Vitalija Petrenkienė
- Department of Gastroenterology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Jūrate Kondrackienė
- Department of Gastroenterology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Laimutis Kučinskas
- Institute for Digestive Research, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Gediminas Kiudelis
- Institute for Digestive Research, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania; Department of Gastroenterology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania.
| | - Jurgita Skiecevičienė
- Institute for Digestive Research, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Limas Kupčinskas
- Institute for Digestive Research, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania; Department of Gastroenterology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
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Zhang M, Xiong H, Fang L, Lu W, Wu X, Wang YQ, Cai ZM, Wu S. Meta-Analysis of the Association between H63D and C282Y Polymorphisms in HFE and Cancer Risk. Asian Pac J Cancer Prev 2016; 16:4633-9. [PMID: 26107216 DOI: 10.7314/apjcp.2015.16.11.4633] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Previous studies suggested that the H63D and C282Y polymorphisms in the HFE genes were susceptible to many cancer types, nevertheless, the present results were inconclusive. Thus, the present study was aimed to evaluate the association between the HFE polymorphisms (H63D and C282Y) and cancer risk via meta-analysis. MATERIALS AND METHODS We retrieved PubMed, Google Scholar, Embase and Web of Science databases for all eligible studies up to April 1, 2015. All the statistical analysis was conducted by STATA 12.0. RESULTS Finally, a total of 20 publications including 24 case-control studies, comprising 6,524 cases and 31,080 controls for HFE-C282Y polymorphism and 19 publications including 21 case control studies, comprising 5,648 cases and 14,257 controls for HFE-H63D polymorphism were enrolled in our analysis. An increased risk for overall cancer risk was identified in HFE-H63D polymorphism under allele contrast (D vs H: OR=1.153; 95%CI=1.031- 1.289, Pheterogeneity=0.002), homozygotes vs wide type (DD vs HH: OR=1.449; 95%CI=1.182-1.777, Pheterogeneity=0.391), dominant model (DD+HD vs HH: OR=1.145; 95%CI=1.007-1.301, Pheterogeneity=0.002) and recessive model (DD vs HD+HH: OR=1.416 ; 95%CI=1.156-1.735, Pheterogeneity=0.549), as well as HFE- C282Y under homozygotes vs wide type (YY vs CC: OR=1.428, 95%CI=1.017-2.006, Pheterogeneity=0.220). In addition, in the stratified analysis by cancer type, an increased risk was identified in hepatocellular carcinoma and breast cancer in C282Y polymorphism, as well as pancreatic cancer in H63D polymorphism, whereas a decreased risk of colorectal cancer was identified in C282Y polymorphism. CONCLUSIONS Present study suggested that H63D and C282Y polymorphisms associated with an increased risk of overall cancer. Nevertheless, well- designed study with large sample size will be continued on this issue of interest.
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Affiliation(s)
- Meng Zhang
- Shenzhen Second People's Hospital, clinical medicine college of Anhui Medical University, Shenzhen Guangdong, China E-mail : ,
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8
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Lv YF, Chang X, Hua RX, Yan GN, Meng G, Liao XY, Zhang X, Guo QN. The risk of new-onset cancer associated with HFE C282Y and H63D mutations: evidence from 87,028 participants. J Cell Mol Med 2016; 20:1219-33. [PMID: 26893171 PMCID: PMC4929296 DOI: 10.1111/jcmm.12764] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 11/26/2015] [Indexed: 12/13/2022] Open
Abstract
To investigate the association between mutation of HFE (the principal pathogenic gene in hereditary haemochromatosis) and risk of cancer, we conducted a meta‐analysis of all available case–control or cohort studies relating to two missense mutations, C282Y and H63D mutations. Eligible studies were identified by searching databases including PubMed, Embase and the ISI Web of Knowledge. Overall and subgroup analyses were performed and odds ratios (ORs) combined with 95% confidence intervals (CIs) were applied to evaluate the association between C282Y mutation, H63D mutation and cancer risk. Sensitivity and cumulative analyses were used to evaluate the stability of the results. A total of 36 eligible studies were included, comprising 13,680 cases and 73,348 controls. C282Y was significantly associated with elevated cancer risk in a recessive genetic model (OR: 1.991, 95% CI: 1.448–2.737). On subgroup analysis stratified by cancer type, statistically significantly increased cancer risks were found for breast cancer, colorectal cancer and hepatocellular carcinoma in a recessive model. When stratified by territory, a significantly increased risk of cancer was found in Oceanic populations in a recessive model and in Asian populations in an allele model and dominant model. H63D mutation did not significantly increase overall cancer risk in any genetic model. However, when, stratified by territory, an increased cancer risk was found in the Asian population in an allele and dominant. C282Y but not H63D mutation was related to elevated cancer risk. Further large‐scale studies considering gene–environment interactions and functional research should be conducted to further investigate this association.
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Affiliation(s)
- Yang-Fan Lv
- Department of Pathology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Xian Chang
- Department of Orthopedics, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Rui-Xi Hua
- Department of Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Guang-Ning Yan
- Department of Pathology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Gang Meng
- Department of Pathology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Xiao-Yu Liao
- Department of Endocrinology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Xi Zhang
- Department of Pathology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Qiao-Nan Guo
- Department of Pathology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
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9
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Association Studies of HFE C282Y and H63D Variants with Oral Cancer Risk and Iron Homeostasis Among Whites and Blacks. Cancers (Basel) 2015; 7:2386-96. [PMID: 26690219 PMCID: PMC4695898 DOI: 10.3390/cancers7040898] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 10/25/2015] [Accepted: 12/02/2015] [Indexed: 01/29/2023] Open
Abstract
Background: Polymorphisms in the hemochromatosis (HFE) gene are associated with excessive iron absorption from the diet, and pro-oxidant effects of iron accumulation are thought to be a risk factor for several types of cancer. Methods: The C282Y (rs1800562) and H63D (rs1799945) polymorphisms were genotyped in 301 oral cancer cases and 437 controls and analyzed in relation to oral cancer risk, and serum iron biomarker levels from a subset of 130 subjects. Results: Individuals with the C282Y allele had lower total iron binding capacity (TIBC) (321.2 ± 37.2 µg/dL vs. 397.7 ± 89.0 µg/dL, p = 0.007) and higher percent transferrin saturation (22.0 ± 8.7 vs. 35.6 ± 22.9, p = 0.023) than wild type individuals. Iron and ferritin levels approached significantly higher levels for the C282Y allele (p = 0.0632 and p = 0.0588, respectively). Conclusions: Iron biomarker levels were elevated by the C282Y allele, but neither (rs1800562) nor (rs1799945) was associated with oral cancer risk in blacks and whites.
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Castiella A, Múgica F, Zapata E, Zubiaurre L, Iribarren A, de Juan MD, Alzate L, Gil I, Urdapilleta G, Otazua P, Emparanza JI. Gender and plasma iron biomarkers, but not HFE gene mutations, increase the risk of colorectal cancer and polyps. Tumour Biol 2015; 36:6959-63. [PMID: 25854174 DOI: 10.1007/s13277-015-3406-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 03/29/2015] [Indexed: 02/08/2023] Open
Abstract
A cohort study of patients included in the Basque Country colorectal cancer (CRC) screening programme was carried out to assess the risk of adenomatous polyps and CRC (P-CRC) associated with HFE gene mutations, with gender and with iron biomarkers (serum ferritin (SF), iron (Fe) and transferrin saturation index (TSI)). Among 432 included patients (mean age 59.8 years), 263 were men (60.9 %) and 169 women (39.1 %). P-CRC were identified in 221 patients (51.2 %) and no polyps (NP) in 211 patients (48.8 %). HFE mutations were identified in 43.8 % of the patients. C282Y/wt genotypic frequency was 6.8 % in the P-CRC group and 1.4 % in the NP group (p < 0.05). The allelic frequency was 3.8 versus 1.2 % (p < 0.05). For laboratory, all three iron biomarkers showed a statistically significant difference: mean Fe, 91.29 ± 34 for P-CRC and 80.81 ± 30.59 for NP group. Mean TSI for P-CRC was 24.95 ± 8.90 and 22.74 ± 8.79 for NP group. Mean SF 308.09 ± 536.32 for P-CRC and 177.55 ± 159.95 for NP group. In a multivariate logistic regression analysis, only male gender (odds ratio (OR) = 2.04, 1.29-3.22), SF (OR = 1.001, 1.0004-1.003) and Fe (OR = 1.01, 1.004-1.02) were related with the presence of CRC and adenoma. Men gender and raised serum iron biomarkers increase the risk of P-CRC.
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Affiliation(s)
| | | | - Eva Zapata
- Mendaro Hospital, 20850, Mendaro, Basque Country, Spain
| | | | | | | | - Luis Alzate
- Donostia University Hospital, Donostia, Spain
| | - Ines Gil
- Donostia University Hospital, Donostia, Spain
| | | | | | - José Ignacio Emparanza
- Clinical Epidemiology Unit, Donostia University Hospital, CASPe, CIBER-ESP, Biodonostia, Donostia, Spain
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Ruder EH, Berndt SI, Gilsing AMJ, Graubard BI, Burdett L, Hayes RB, Weissfeld JL, Ferrucci LM, Sinha R, Cross AJ. Dietary iron, iron homeostatic gene polymorphisms and the risk of advanced colorectal adenoma and cancer. Carcinogenesis 2014; 35:1276-83. [PMID: 24536049 DOI: 10.1093/carcin/bgu028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Dietary iron intake and variation in iron homeostasis genes may affect colorectal neoplasia risk. We conducted two nested case-control studies within the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial: one of advanced colorectal adenoma (1205 cases; 1387 controls) and one of colorectal cancer (370 cases; 401 controls). Iron intake was estimated with a food frequency questionnaire and genotyping was performed for 21 genes. Unconditional logistic regression was used to estimate odds ratio (OR) and 95% confidence intervals (95% CIs) for colorectal neoplasia risk within quartiles of intake. Several single nucleotide polymorphisms (SNPs) modified the association between iron intake and the risk of adenoma or cancer. Dietary iron was positively associated with colorectal adenoma among three SNPs of HEPHL1, including carriers of the AA genotype at rs7946162 (ORQ4-Q1 = 2.22, 95% CI 1.15-4.27, Ptrend = 0.03; Pinteraction = 0.10), the TT genotype at rs2460063 (ORQ4-Q1 = 2.39, 95% CI 1.26-4.54, Ptrend = 0.02; Pinteraction = 0.04) and the GG genotype at rs7127348 (ORQ4-Q1 = 2.40, 95% CI 1.23-4.67, Ptrend = 0.02; Pinteraction = 0.09). Heme iron was positively associated with colorectal cancer among those with GG genotypes for ACO1 rs10970985 (ORQ4-Q 1 = 2.45, 95% CI 3.40-8.06, Ptrend = 0.004; Pinteraction = 0.05). However, none of the associations were statistically significant after adjustment for multiple comparisons. Future studies should target the specific genes and SNPs for which the association was significant prior to multiple comparison correction.
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Affiliation(s)
- Elizabeth H Ruder
- School of Health and Rehabilitation Sciences, University of Pittsburgh, 4051 Forbes Tower, Pittsburgh, PA 15260, USA,
| | - Sonja I Berndt
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA
| | - Anne M J Gilsing
- Department of Epidemiology, School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Barry I Graubard
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA
| | - Laurie Burdett
- Core Genotyping Facility, National Cancer Institute, SAIC-Frederick, Inc., Gaithersburg, MD 20892, USA
| | - Richard B Hayes
- Division of Epidemiology, Department of Environmental Medicine, New York University School of Medicine, New York, NY 10016, USA
| | - Joel L Weissfeld
- University of Pittsburgh Medical Center Cancer Pavilion, Pittsburgh, PA 15232, USA and
| | | | - Rashmi Sinha
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA
| | - Amanda J Cross
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA
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12
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Chen W, Zhao H, Li T, Yao H. HFE gene C282Y variant is associated with colorectal cancer in Caucasians: a meta-analysis. Tumour Biol 2013; 34:2255-9. [PMID: 23553028 DOI: 10.1007/s13277-013-0766-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 03/22/2013] [Indexed: 01/21/2023] Open
Abstract
The HFE gene has been suggested to play an important role in the pathogenesis of colorectal cancer. However, the results have been conflicting. In this study, we performed a meta-analysis to clarify the association of HFE gene C282Y variant with colorectal cancer. PubMed and Embase were retrieved to identify the potential literature. Pooled odds ratio (OR) with 95 % confidence interval (CI) was calculated using fixed- or random-effects model. A total of eight papers including nine studies (7,588 colorectal cancer cases and 81,571 controls) for HFE gene C282Y variant were included in the meta-analysis. The result indicated that HFE gene C282Y variant was significantly associated with colorectal cancer under recessive model (OR = 2.00, 95 % CI = 1.32-3.04), with no evidence of between-study heterogeneity (I (2) = 0.2 %, p = 0.432). Further subgroup analysis by number of cases suggested the effect was significant in studies with more than 500 cases (OR = 2.51, 95 % CI = 1.58-3.98, I (2) = 0.0 %, p = 0.921), but not in studies with less than 500 cases (OR = 0.75, 95 % CI = 0.28-1.97, I (2) = 0.0 %, p = 0.622). The current meta-analysis supported the positive association of HFE gene C282Y variant with colorectal cancer. Further large-scale studies with the consideration for gene-gene/gene-environment interactions should be conducted to investigate the association.
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Affiliation(s)
- Weidong Chen
- Department of General Surgery, The Second Xiang-Ya Hospital, Central South University, ChangSha, Hunan, 410011, China.
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13
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Agudo A, Bonet C, Sala N, Muñoz X, Aranda N, Fonseca-Nunes A, Clavel-Chapelon F, Boutron-Ruault MC, Vineis P, Panico S, Palli D, Tumino R, Grioni S, Quirós JR, Molina E, Navarro C, Barricarte A, Chamosa S, Allen NE, Khaw KT, Bueno-de-Mesquita HB, Siersema PD, Numans ME, Trichopoulou A, Lagiou P, Trichopoulos D, Kaaks R, Canzian F, Boeing H, Meidtner K, Johansson M, Sund M, Manjer J, Overvad K, Tjonneland A, Lund E, Weiderpass E, Jenab M, Fedirko V, Offerhaus GJA, Riboli E, González CA, Jakszyn P. Hemochromatosis (HFE) gene mutations and risk of gastric cancer in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. Carcinogenesis 2013; 34:1244-50. [PMID: 23389292 DOI: 10.1093/carcin/bgt045] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hereditary hemochromatosis (HH) is a strong risk factor for hepatocellular cancer, and mutations in the HFE gene associated with HH and iron overload may be related to other tumors, but no studies have been reported for gastric cancer (GC). A nested case-control study was conducted within the European Prospective Investigation into Cancer and Nutrition (EPIC), including 365 incident gastric adenocarcinoma and 1284 controls matched by center, sex, age and date of blood collection. Genotype analysis was performed for two functional polymorphisms (C282Y/rs1800562 and H63D/rs1799945) and seven tagSNPs of the HFE genomic region. Association with all gastric adenocarcinoma, and according to anatomical localization and histological subtype, was assessed by means of the odds ratio (OR) and 95% confidence interval (CI) estimated by unconditional logistic regression adjusted for the matching variables. We observed a significant association for H63D with OR (per rare allele) of 1.32 (CI = 1.03-1.69). In subgroup analyses, the association was stronger for non-cardia anatomical subsite (OR = 1.60, CI = 1.16-2.21) and intestinal histological subtype (OR = 1.82, CI = 1.27-2.62). Among intestinal cases, two tagSNPs (rs1572982 and rs6918586) also showed a significant association that disappeared after adjustment for H63D. No association with tumors located in the cardia or with diffuse subtype was found for any of the nine SNPs analyzed. Our results suggest that H63D variant in HFE gene seems to be associated with GC risk of the non-cardia region and intestinal type, possibly due to its association with iron overload although a role for other mechanisms cannot be entirely ruled out.
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Affiliation(s)
- Antonio Agudo
- Unit of Nutrition, Environment and Cancer, Catalan Institute of Oncology-ICO, IDIBELL, L'Hospitalet de Llobregat, Barcelona 08908, Spain.
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14
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Fargion S, Valenti L, Fracanzani AL. Hemochromatosis gene (HFE) mutations and cancer risk: expanding the clinical manifestations of hereditary iron overload. Hepatology 2010; 51:1119-21. [PMID: 20373367 DOI: 10.1002/hep.23541] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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15
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Osborne NJ, Gurrin LC, Allen KJ, Constantine CC, Delatycki MB, McLaren CE, Gertig DM, Anderson GJ, Southey MC, Olynyk JK, Powell LW, Hopper JL, Giles GG, English DR. HFE C282Y homozygotes are at increased risk of breast and colorectal cancer. Hepatology 2010; 51:1311-8. [PMID: 20099304 PMCID: PMC3815603 DOI: 10.1002/hep.23448] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
UNLABELLED The evidence that mutations in the HFE gene for hemochromatosis are associated with increased cancer risk is inconsistent. The Melbourne Collaborative Cohort Study is a prospective cohort study that commenced recruitment in 1990. Participants born in Australia, New Zealand, the United Kingdom, or Ireland (n = 28,509) were genotyped for the HFE C282Y (substitution of tyrosine for cysteine at amino acid 282) variant. Incident cancers were ascertained from Australian cancer registries during an average of 14 years follow-up. Hazard ratios (HRs), confidence intervals (CIs), and P values were obtained from separate Cox regression analyses for colorectal, breast, and prostate cancers, all other solid cancers, and all cancers. Compared to those with no C282Y variant, C282Y homozygotes were at increased risk of colorectal cancer (HR = 2.28; 95% CI = 1.22, 4.25; P = 0.01) and female C282Y homozygotes were at increased risk of developing breast cancer (HR = 2.39; 95% CI = 1.24, 4.61; P = 0.01), but male C282Y homozygotes were not at increased risk for prostate cancer (HR = 0.96; 95% CI = 0.43, 2.15; P = 0.92). C282Y/H63D compound heterozygotes were not at increased risk for colorectal cancer (HR = 1.27; 95% CI = 0.80, 2.01), breast cancer (HR = 1.16; 95% CI = 0.74, 1.84), or prostate cancer (HR = 1.08; 95% CI = 0.68, 1.70). CONCLUSION HFE C282Y homozygotes have twice the risk of colorectal and breast cancer compared with those individuals without the C282Y variant.
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Affiliation(s)
- Nicholas J. Osborne
- Gut and Liver, Murdoch Childrens Research Institute, Melbourne, VIC Australia,Centre for MEGA Epidemiology, University of Melbourne, Melbourne, VIC, Australia,Department of Paediatrics, the University of Melbourne, Melbourne, VIC, Australia
| | - Lyle C Gurrin
- Gut and Liver, Murdoch Childrens Research Institute, Melbourne, VIC Australia,Centre for MEGA Epidemiology, University of Melbourne, Melbourne, VIC, Australia
| | - Katrina J. Allen
- Gut and Liver, Murdoch Childrens Research Institute, Melbourne, VIC Australia,Department of Paediatrics, the University of Melbourne, Melbourne, VIC, Australia,Department of Gastroenterology, The Royal Children’s Hospital, Melbourne, VIC, Australia
| | - Clare C Constantine
- Centre for MEGA Epidemiology, University of Melbourne, Melbourne, VIC, Australia
| | - Martin B. Delatycki
- Department of Paediatrics, the University of Melbourne, Melbourne, VIC, Australia,Bruce Lefroy Centre for Genetic Health Research, Murdoch Childrens Research Institute, Melbourne, VIC, Australia
| | | | - Dorota M Gertig
- Centre for MEGA Epidemiology, University of Melbourne, Melbourne, VIC, Australia,Victorian Cervical Cytology Registry, Melbourne, VIC, Australia
| | | | - Melissa C Southey
- Department of Pathology, University of Melbourne, Melbourne, VIC, Australia
| | - John K Olynyk
- Department of Gastroenterology, Fremantle Hospital, Fremantle, WA, Australia,School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia,Western Australian Institute of Medical Research, Perth
| | - Lawrie W. Powell
- Queensland Institute of Medical Research, Brisbane QLD, Australia,University of Queensland, Brisbane QLD, Australia
| | - John L Hopper
- Centre for MEGA Epidemiology, University of Melbourne, Melbourne, VIC, Australia
| | - Graham G Giles
- Centre for MEGA Epidemiology, University of Melbourne, Melbourne, VIC, Australia,Cancer Epidemiology Centre, The Cancer Council Victoria, Melbourne, VIC Australia
| | - Dallas R English
- Centre for MEGA Epidemiology, University of Melbourne, Melbourne, VIC, Australia,Cancer Epidemiology Centre, The Cancer Council Victoria, Melbourne, VIC Australia
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16
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Chua ACG, Klopcic B, Lawrance IC, Olynyk JK, Trinder D. Iron: An emerging factor in colorectal carcinogenesis. World J Gastroenterol 2010; 16:663-72. [PMID: 20135713 PMCID: PMC2817053 DOI: 10.3748/wjg.v16.i6.663] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The carcinogenic potential of iron in colorectal cancer (CRC) is not fully understood. Iron is able to undergo reduction and oxidation, making it important in many physiological processes. This inherent redox property of iron, however, also renders it toxic when it is present in excess. Iron-mediated generation of reactive oxygen species via the Fenton reaction, if uncontrolled, may lead to cell damage as a result of lipid peroxidation and oxidative DNA and protein damage. This may promote carcinogenesis through increased genomic instability, chromosomal rearrangements as well as mutations of proto-oncogenes and tumour suppressor genes. Carcinogenesis is also affected by inflammation which is exacerbated by iron. Population studies indicate an association between high dietary iron intake and CRC risk. In this editorial, we examine the link between iron-induced oxidative stress and inflammation on the pathogenesis of CRC.
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Effects of C282Y, H63D, and S65C HFE gene mutations, diet, and life-style factors on iron status in a general Mediterranean population from Tarragona, Spain. Ann Hematol 2010; 89:767-73. [PMID: 20107990 PMCID: PMC2887936 DOI: 10.1007/s00277-010-0901-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Accepted: 01/04/2010] [Indexed: 12/11/2022]
Abstract
Mutations in the HFE gene result in iron overload and can produce hereditary hemochromatosis (HH), a disorder of iron metabolism characterized by increased intestinal iron absorption. Dietary quality, alcoholism and other life-style factors can increase the risk of iron overload, especially among genetically at risk populations. Polymorphisms of the HFE gene (C282Y, H63D and S65C) were measured together with serum ferritin (SF), transferrin saturation (TS) and hemoglobin, to measure iron status, in randomly-selected healthy subjects living in the Spanish Mediterranean coast (n = 815; 425 females, 390 males), 18 to 75 years of age. The intake of dietary components that affect iron absorption was calculated from 3-day dietary records. The presence of C282Y/H63D compound heterozygote that had a prevalence of 2.8% in males and 1.2% in females was associated with an elevated TS and SF. No subject was homozygous for C282Y or S65C. The C282Y heterozygote, H63D heterozygote and homozygote and H63D/S65C compound heterozygote genotypes were associated with increased TS relative to the wild type in the general population. These genotypes together with the alcohol and iron intake increase the indicators of iron status, while calcium intake decreases them. We did not observe any affect of the S65C heterozygote genotype on these levels. All the HFE genotypes except for the S65C heterozygote together with the alcohol, iron and calcium intake affect the indicators of iron status. The C282Y/H63D compound heterozygote genotype has the higher phenotypic expression in our Spanish Mediterranean population.
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18
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Shi Z, Johnstone D, Talseth-Palmer BA, Evans TJ, Spigelman AD, Groombridge C, Milward EA, Olynyk JK, Suchy J, Kurzawski G, Lubinski J, Scott RJ. Haemochromatosis HFE gene polymorphisms as potential modifiers of hereditary nonpolyposis colorectal cancer risk and onset age. Int J Cancer 2009; 125:78-83. [PMID: 19291797 DOI: 10.1002/ijc.24304] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hereditary nonpolyposis colorectal cancer (HNPCC) is characterized by germline mutations in DNA mismatch repair genes; however, variation in disease expression suggests that there are potential modifying factors. Polymorphisms of the HFE gene, which cause the iron overload disorder hereditary haemochromatosis, have been proposed as potential risk factors for the development of colorectal cancer (CRC). To understand the relationship between HNPCC disease phenotype and polymorphisms of the HFE gene, a total of 362 individuals from Australia and Poland with confirmed causative MMR gene mutations were genotyped for the HFE C282Y and H63D polymorphisms. A significantly increased risk of developing CRC was observed for H63D homozygotes when compared with combined wild-type homozygotes and heterozygotes (hazard ratio = 2.93, p = 0.007). Evidence for earlier CRC onset was also observed in H63D homozygotes with a median age of onset 6 years earlier than wild type or heterozygous participants (44 vs. 50 years of age). This effect was significant by all tests used (log-rank test p = 0.026, Wilcoxon p = 0.044, Tarone-Ware p = 0.035). No association was identified for heterozygosity of either polymorphism and limitations on power-prevented investigation of C282Y homozygosity or compound C282Y/H63D heterozygosity. In the Australian sample only, women had a significantly reduced risk of developing CRC when compared with men (hazard ratio = 0.58, p = 0.012) independent of HFE genotype for either single nucleotide polymorphisms. In conclusion, homozygosity for the HFE H63D polymorphism seems to be a genetic modifier of disease expression in HNPCC. Understanding the mechanisms by which HFE interrelates with colorectal malignancies could lead to reduction of disease risk in HNPCC.
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Affiliation(s)
- Zumin Shi
- Research Centre for Gender, Health and Ageing, University of Newcastle, Callaghan, Australia
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Andrikovics H, Meggyesi N, Szilvasi A, Tamaska J, Halm G, Lueff S, Nahajevszky S, Egyed M, Varkonyi J, Mikala G, Sipos A, Kalasz L, Masszi T, Tordai A. HFE C282Y mutation as a genetic modifier influencing disease susceptibility for chronic myeloproliferative disease. Cancer Epidemiol Biomarkers Prev 2009; 18:929-34. [PMID: 19258483 DOI: 10.1158/1055-9965.epi-08-0359] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Iron metabolism has been implicated in carcinogenesis and several studies assessed the potential role of genetic variants of proteins involved in iron metabolism (HFE C282Y, TFR S142G) in different malignancies. Few reports addressed this issue with relation to chronic myeloproliferative disorders (CMPD). The aims of our study were (a) to examine the potential associations of CMPD development with genetic modifiers of iron metabolism in a large cohort of CMPD patients; (b) to examine associations of genetic variants of proteins involved in iron metabolism; and acquired JAK2 V617F mutation with clinical characteristics of CMPD. HFE C282Y was genotyped in 328 CMPD patients and 996 blood donors as controls, HFE H63D, and TFR S142G were tested in CMPD patients and 171 first time blood donors. JAK2 V617F mutation was tested in CMPD patients and in 122 repeated blood donors. Decreased C282Y allele frequency (allele frequency+/-95% confidence interval) was found in the CMPD group (1.8%+/-1.0%) compared with controls (3.4%+/-0.8%; P=0.048). TFR S142G allele frequency was reduced among V617F-negative CMPD patients (34.8%+/-7.6%) compared with controls (47.8%+/-5.4%; P=0.02). The frequency of JAK2 V617F was 75.9% (249 of 328) in the CMPD group. At presentation, elevated hemoglobin levels were found in V617F-positive patients compared with V617F-negative counterparts (P<0.000). Vascular complications (26.6% versus 15.2%; P=0.039) as well as female gender (57.4% versus 41.8%; P=0.019) were more common in V617F-positive patients. We found that HFE C282Y might be associated with a protective role against CMPD. Because chronic iron deficiency or latent anemia may trigger disease susceptibility for CMPD, HFE C282Y positivity may be a genetic factor influencing this effect.
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Affiliation(s)
- Hajnalka Andrikovics
- National Blood Transfusion Service, Department of Hematology and Stem Cell Transplantation, St. Istvan and St. Laszlo Hospital of Budapest, and 3rd Department of Internal Medicine, Semmelweis University, Budapest, Hungary.
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20
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Lekana-Douki JB, Parzy D, Obiang PC, Mouidi P, Mbadinga F, Obiang N, Fumoux F, Kombila M. Transferrin Polymorphisms in Childhood Malarial Anaemia in the Gabonese Children. Trop Med Health 2009. [DOI: 10.2149/tmh.2008-27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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21
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Affiliation(s)
- M Tevfik Dorak
- School of Clinical Medical Sciences (Child Health), Newcastle University, Newcastle-upon-Tyne, UK.
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22
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Gunel-Ozcan A, Alyılmaz-Bekmez S, Guler EN, Guc D. HFE H63D mutation frequency shows an increase in Turkish women with breast cancer. BMC Cancer 2006; 6:37. [PMID: 16503999 PMCID: PMC1402308 DOI: 10.1186/1471-2407-6-37] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2005] [Accepted: 02/19/2006] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The hereditary hemochromatosis gene HFE plays a pivotal role in iron homeostasis. The association between cancer and HFE hetero- or homozygosity has previously been shown including hepatocellular and nonhepatocellular malignancies. This study was performed to compare frequencies of HFE C282Y and H63D variants in Turkish women with breast cancer and healthy controls. METHODS Archived DNA samples of Hacettepe University Oncology Institute were used in this study. The HFE gene was investigated by PCR-RFLP. RESULTS All subjects studied were free from C282Y mutation. Thirty-nine patients had H63D mutation and were all heterozygous. H63D allele frequency was 22.2% (39/176) in the breast cancer patients, and 14% (28/200) in the healthy volunteers. Statistical analysis of cases with HFE H63D phenotype showed significant difference between breast cancer and healthy volunteers (P = 0.02). CONCLUSION Our results suggest that HFE H63D mutation frequencies were increased in the breast cancer patients in comparison to those in the general population. Also, odds ratios (odds ratio = 2.05) computed in this study suggest that H63D has a positive association with breast cancer.
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Affiliation(s)
- Aysen Gunel-Ozcan
- Kirikkale University School of Medicine, Department of Medical Biology and Genetics, Kirikkale, Turkey
| | - Sibel Alyılmaz-Bekmez
- Kirikkale University School of Medicine, Department of Medical Biology and Genetics, Kirikkale, Turkey
| | - Emine Nilufer Guler
- Hacettepe University, Oncology Institute, Medical Oncology Department, Ankara, Turkey
| | - Dicle Guc
- Hacettepe University, Oncology Institute, Basic Oncology Department, Ankara, Turkey
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Glei M, Klenow S, Sauer J, Wegewitz U, Richter K, Pool-Zobel BL. Hemoglobin and hemin induce DNA damage in human colon tumor cells HT29 clone 19A and in primary human colonocytes. Mutat Res 2005; 594:162-71. [PMID: 16226281 DOI: 10.1016/j.mrfmmm.2005.08.006] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2005] [Revised: 08/22/2005] [Accepted: 08/29/2005] [Indexed: 12/13/2022]
Abstract
Epidemiological findings have indicated that red meat increases the likelihood of colorectal cancer. Aim of this study was to investigate whether hemoglobin, or its prosthetic group heme, in red meat, is a genotoxic risk factor for cancer. Human colon tumor cells (HT29 clone 19A) and primary colonocytes were incubated with hemoglobin/hemin and DNA damage was investigated using the comet assay. Cell number, membrane damage, and metabolic activity were measured as parameters of cytotoxicity in both cell types. Effects on cell growth were determined using HT29 clone 19A cells. HT29 clone 19A cells were also used to explore possible pro-oxidative effects of hydrogen peroxide (H2O2) and antigenotoxic effects of the radical scavenger dimethyl sulfoxide (DMSO). Additionally we determined in HT29 clone 19A cells intracellular iron levels after incubation with hemoglobin/hemin. We found that hemoglobin increased DNA damage in primary cells (> or =10 microM) and in HT29 clone 19A cells (> or =250 microM). Hemin was genotoxic in both cell types (500-1000 microM) with concomitant cytotoxicity, detected as membrane damage. In both cell types, hemoglobin and hemin (> or =100 microM) impaired metabolic activity. The growth of HT29 clone 19A cells was reduced by 50 microM hemoglobin and 10 microM hemin, indicating cytotoxicity at genotoxic concentrations. Hemoglobin or hemin did not enhance the genotoxic activity of H2O2 in HT29 clone 19A cells. On the contrary, DMSO reduced the genotoxicity of hemoglobin, which indicated that free radicals were scavenged by DMSO. Intracellular iron increased in hemoglobin/hemin treated HT29 clone 19A cells, reflecting a 40-50% iron uptake for each compound. In conclusion, our studies show that hemoglobin is genotoxic in human colon cells, and that this is associated with free radical mechanisms and with cytotoxicity, especially for hemin. Thus, hemoglobin/hemin, whether available from red meat or from bowel bleeding, may pose genotoxic and cytotoxic risks to human colon cells, both of which contribute to initiation and progression of colorectal carcinogenesis.
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Affiliation(s)
- Michael Glei
- Department of Nutritional Toxicology, Institute for Nutrition, Friedrich-Schiller-University, Dornburger Str. 25, D-07743 Jena, Germany.
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