1
|
Identifying polymorphic cis-regulatory variants as risk markers for lung carcinogenesis and chemotherapy responses in tobacco smokers from eastern India. Sci Rep 2023; 13:4019. [PMID: 36899086 PMCID: PMC10006236 DOI: 10.1038/s41598-023-30962-9] [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: 07/09/2022] [Accepted: 03/03/2023] [Indexed: 03/12/2023] Open
Abstract
Aberrant expression of xenobiotic metabolism and DNA repair genes is critical to lung cancer pathogenesis. This study aims to identify the cis-regulatory variants of the genes modulating lung cancer risk among tobacco smokers and altering their chemotherapy responses. From a list of 2984 SNVs, prioritization and functional annotation revealed 22 cis-eQTLs of 14 genes within the gene expression-correlated DNase I hypersensitive sites using lung tissue-specific ENCODE, GTEx, Roadmap Epigenomics, and TCGA datasets. The 22 cis-regulatory variants predictably alter the binding of 44 transcription factors (TFs) expressed in lung tissue. Interestingly, 6 reported lung cancer-associated variants were found in linkage disequilibrium (LD) with 5 prioritized cis-eQTLs from our study. A case-control study with 3 promoter cis-eQTLs (p < 0.01) on 101 lung cancer patients and 401 healthy controls from eastern India with confirmed smoking history revealed an association of rs3764821 (ALDH3B1) (OR = 2.53, 95% CI = 1.57-4.07, p = 0.00014) and rs3748523 (RAD52) (OR = 1.69, 95% CI = 1.17-2.47, p = 0.006) with lung cancer risk. The effect of different chemotherapy regimens on the overall survival of lung cancer patients to the associated variants showed that the risk alleles of both variants significantly decreased (p < 0.05) patient survival.
Collapse
|
2
|
Cazzolla Gatti R, Di Paola A, Monaco A, Velichevskaya A, Amoroso N, Bellotti R. The spatial association between environmental pollution and long-term cancer mortality in Italy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 855:158439. [PMID: 36113788 DOI: 10.1016/j.scitotenv.2022.158439] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 08/18/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
Tumours are nowadays the second world‑leading cause of death after cardiovascular diseases. During the last decades of cancer research, lifestyle and random/genetic factors have been blamed for cancer mortality, with obesity, sedentary habits, alcoholism, and smoking contributing as supposed major causes. However, there is an emerging consensus that environmental pollution should be considered one of the main triggers. Unfortunately, all this preliminary scientific evidence has not always been followed by governments and institutions, which still fail to pursue research on cancer's environmental connections. In this unprecedented national-scale detailed study, we analyzed the links between cancer mortality, socio-economic factors, and sources of environmental pollution in Italy, both at wider regional and finer provincial scales, with an artificial intelligence approach. Overall, we found that cancer mortality does not have a random or spatial distribution and exceeds the national average mainly when environmental pollution is also higher, despite healthier lifestyle habits. Our machine learning analysis of 35 environmental sources of pollution showed that air quality ranks first for importance concerning the average cancer mortality rate, followed by sites to be reclaimed, urban areas, and motor vehicle density. Moreover, other environmental sources of pollution proved to be relevant for the mortality of some specific cancer types. Given these alarming results, we call for a rearrangement of the priority of cancer research and care that sees the reduction and prevention of environmental contamination as a priority action to put in place in the tough struggle against cancer.
Collapse
Affiliation(s)
- Roberto Cazzolla Gatti
- Department of Biological Sciences, Geological and Environmental (BiGeA), Alma Mater Studiorum - University of Bologna, 40126 Bologna, Italy
| | - Arianna Di Paola
- Institute for BioEconomy, National Research Council of Italy (IBE-CNR), 00100 Rome, Italy
| | - Alfonso Monaco
- Dipartimento Interateneo di Fisica "M. Merlin", Università degli Studi di Bari "A. Moro", 70126 Bari, Italy; Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70125 Bari, Italy.
| | | | - Nicola Amoroso
- Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70125 Bari, Italy; Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "A. Moro", 70125 Bari, Italy
| | - Roberto Bellotti
- Dipartimento Interateneo di Fisica "M. Merlin", Università degli Studi di Bari "A. Moro", 70126 Bari, Italy; Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70125 Bari, Italy
| |
Collapse
|
3
|
Walia HK, Singh N, Sharma S. Genetic polymorphisms in the mEH gene in relation to tobacco smoking: role in lung cancer susceptibility and survival in north Indian patients with lung cancer undergoing platinum-based chemotherapy. Future Oncol 2021; 17:4925-4946. [PMID: 34672683 DOI: 10.2217/fon-2021-0412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aim: Epoxide hydrolase is involved in oxidative defenses and is responsible for the activation of carcinogens. The relationship between EPHX1 polymorphisms (Tyr113His and His139Arg) and overall survival (OS) and lung cancer (LC) risk was investigated. Methods: The study comprised 550 cases and 550 controls. Genotyping and statistical analysis were applied. Results: The variant genotypes of EPHX1 polymorphisms exhibited no association with LC risk. The Tyr113His polymorphism exhibited twofold increased odds of lymph node invasion (p = 0.04). The Tyr/His genotype is a risk factor for smokers. Subjects carrying the combined genotype for His139Arg showed better median survival time (MST) and the heterozygous genotype revealed better MST in the case of small-cell lung cancer (SCLC; 11.30 vs 6.73 months; log-rank test: p = 0.02). The heterozygous genotype (His139Arg) had longer MST in patients receiving cisplatin/carboplatin and irinotecan (11.30 vs 7.23; log-rank test: p = 0.007) Conclusion: The Tyr113His polymorphism is associated with LC risk in smokers and is a potential prognostic factor for OS in patients with SCLC after irinotecan.
Collapse
Affiliation(s)
- Harleen Kaur Walia
- Department of Biotechnology, Thapar Institute of Engineering & Technology, Patiala 147004, India
| | - Navneet Singh
- Department of Pulmonary Medicine, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh 160012, India
| | - Siddharth Sharma
- Department of Biotechnology, Thapar Institute of Engineering & Technology, Patiala 147004, India
| |
Collapse
|
4
|
Xiao J, Wang Y, Wang Z, Zhang Y, Li Y, Xu C, Xiao M, Wang H, Guo S, Jin L, Wang J, Bao Y, Shang Y, Wu J. The relevance analysis of GSTP1 rs1695 and lung cancer in the Chinese Han population. Int J Biol Markers 2021; 36:48-54. [PMID: 34596453 DOI: 10.1177/17246008211039236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND This study explored the relevance between rs1695 and susceptibility to the lung cancer in the Chinese Han population. Stratification analysis was conducted on the basis of age, gender, smoking status, tumor-related family history, and pathological type to observe relations between rs1695 and susceptibility to lung cancer in the subgroups. METHODS A case-control study was performed with 974 lung cancer patients who were pathologically diagnosed and 1005 healthy cases based on physical examination to analyze the association between rs1695 and the risk of lung cancer. RESULTS The frequencies of the AA, GA, and GG genotypes of rs1695 were 68.4%, 28.7%, and 2.9% in cases and 64.8%, 30.8%, and 4.2% in controls, respectively. After adjustment for age, gender, smoking status, and family history, it appears that the rs1695 G allele decreases the risk of lung cancer (OR = 0.811, 95% CI 0.684-0.961, P = 0.016). Moreover, compared with the AA genotype, the GA + GG genotype decreased lung cancer susceptibility (OR = 0.808, 95% CI 0.663-0.985, P = 0.035) and the GG genotype (OR = 0.591, 95% CI 0.347-0.988, P = 0.048). In a stratified analysis, the risk of lung cancer in the G allele carriers decreased among the males, patients without a tumor-related family history, and patients with lung adenocarcinoma, especially in smokers. CONCLUSION The polymorphism of locus rs1695 is related to the risk of lung cancer and is expected to be a target for the prediction of lung cancer.
Collapse
Affiliation(s)
- Jiang Xiao
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Yulu Wang
- Department of Emergency, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Zhimin Wang
- Shanghai-MOST key Laboratory of Heath and Disease Genomics, Chinese National Human Genome Center at Shanghai (CHGC) and Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), Shanghai, China
| | - Yao Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Yutao Li
- Ministry of Education Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Chang Xu
- Clinical College of Xiangnan University, Chenzhou, China
| | - Man Xiao
- Department of Biochemistry and Molecular Biology, Hainan Medical University, Haikou, China
| | - Haijian Wang
- Ministry of Education Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Shicheng Guo
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Li Jin
- Ministry of Education Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Jiucun Wang
- Ministry of Education Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Yang Bao
- Department of Cardiothoracic Surgery, Affiliated Hospital of Yangzhou University, Yangzhou, China
| | - Yan Shang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Naval Medical University, Shanghai, China.,Department of General Practice, The First Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Junjie Wu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Naval Medical University, Shanghai, China.,Ministry of Education Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| |
Collapse
|
5
|
Walia HK, Singh N, Sharma S. Genetic polymorphism of Arg213His variant in the SULT1A1 gene is associated with reduced susceptibility to lung cancer in North Indian population. Xenobiotica 2021; 51:1071-1080. [PMID: 34328372 DOI: 10.1080/00498254.2021.1963008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Sulfotransferases (SULTs) are phase II detoxification enzymes that is involved in the biotransformation of many compounds including tobacco carcinogens. A polymorphism in the SULT1A1 (Arg213His) gene results in reduced enzyme activity.We investigated the association between the SULT1A1 (Arg213/His) genotype and lung cancer (LC). This case-control study comprised of 550 cases and controls, matched on age, gender and smoking status.The variant genotype exhibited no association with LC risk, even after stratification on basis of histological subtypes. Male LC patients carrying the variant His213 allele (p = 0.02) did not exhibit an increased risk towards LC. Smokers harbouring the Arg/His genotype did demonstrate a reduced risk towards LC (AOR = 0.70; p = 0.019). Furthermore, the LC subjects who were heavy smokers and harbouring the Arg/His genotype (AOR = 0.28; p = 0.019) did not show a genetic predisposition towards LC susceptibility. The subjects who smoked pack years of above 40 and carrying the His/His (AOR = 0.28; p = 0.036) genotype were found to have a reduced risk for LC. Furthermore, 473 subjects were analysed in regards to overall survival, wherein the His/His genotype exhibited better OS than Arg/Arg genotype (11.30 vs. 8.07 months).This study provides evidence of no genetic predisposition towards LC risk associated with SULT1A1 Arg213His polymorphism in relation to tobacco smoking.
Collapse
Affiliation(s)
- Harleen Kaur Walia
- Department of Biotechnology, Thapar Institute of Engineering & Technology, Patiala, India
| | - Navneet Singh
- Department of Pulmonary Medicine, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India
| | - Siddharth Sharma
- Department of Biotechnology, Thapar Institute of Engineering & Technology, Patiala, India
| |
Collapse
|
6
|
Sengupta D, Banerjee S, Mukhopadhyay P, Mitra R, Chaudhuri T, Sarkar A, Bhattacharjee G, Nath S, Roychoudhury S, Bhattacharjee S, Sengupta M. A comprehensive meta-analysis and a case-control study give insights into genetic susceptibility of lung cancer and subgroups. Sci Rep 2021; 11:14572. [PMID: 34272429 PMCID: PMC8285487 DOI: 10.1038/s41598-021-92275-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 06/08/2021] [Indexed: 12/17/2022] Open
Abstract
Reports of genetic association of polymorphisms with lung cancer in the Indian subcontinent are often conflicting. To summarise and replicate published evidence for association with lung cancer and its subgroups. We performed a meta-analysis of candidate associations on lung cancer, its histological subtypes and smoking status in the Indian subcontinent following PRISMA guidelines. Multiple testing corrections were done by the Benjamini-Hochberg method through assessment of significance at a false discovery rate of 10%. We genotyped and investigated rs1048943/CYP1A1 in a case-control sample from eastern India, followed by its global meta-analysis using a similar protocol. Meta-analysis of 18 variants of 11 genes reported in 39 studies (7630 cases and 8169 controls) showed significant association of rs1048943/CYP1A1 [2.07(1.49-2.87)] and rs4646903/CYP1A1 [1.48(1.93-1.95)] with overall lung cancer risk at 10% FDR, while nominal association (p < 0.05) was observed for del1/GSTT1, del2/GSTM1, rs1695/GSTP1 and rs17037102/ DKK2. Subtype analysis showed a significant association of del1/GSTT1 with adenocarcinoma, rs4646903/CYP1A1 with squamous carcinoma, and rs1048943/CYP1A1 with both. Association of rs4646903/CYP1A1 in smokers and effect modification by meta-regression analysis was observed. Genotyping of rs1048943/CYP1A1 that presented significant heterogeneity (p < 0.1) revealed an association with adenocarcinoma among eastern Indian smokers, while a global meta-analysis in 10458 cases and 10871 controls showed association with lung cancer and its subgroups. This study identified the susceptibility loci for lung cancer and its covariate-subgroups.
Collapse
Affiliation(s)
- Debmalya Sengupta
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Souradeep Banerjee
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Pramiti Mukhopadhyay
- Greehey Children's Cancer Research Institute, UT Health San Antonio, 8403 Floyd Curl Dr., San Antonio, TX-78229, USA
| | - Ritabrata Mitra
- Department of CHEST, IPGME&R, 244 A.J.C. Bose Road, Kolkata, 700020, India
| | - Tamohan Chaudhuri
- Saroj Gupta Cancer Centre and Research Institute, Mahatma Gandhi Road, Thakurpukur, Kolkata, 700063, India
| | - Abhijit Sarkar
- Saroj Gupta Cancer Centre and Research Institute, Mahatma Gandhi Road, Thakurpukur, Kolkata, 700063, India
| | - Gautam Bhattacharjee
- Saroj Gupta Cancer Centre and Research Institute, Mahatma Gandhi Road, Thakurpukur, Kolkata, 700063, India
| | - Somsubhra Nath
- Saroj Gupta Cancer Centre and Research Institute, Mahatma Gandhi Road, Thakurpukur, Kolkata, 700063, India
| | - Susanta Roychoudhury
- CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700032, India
| | - Samsiddhi Bhattacharjee
- National Institute of Biomedical Genomics, Near Netaji Subhas Sanatorium Post Office, Kalyani, West Bengal, 741251, India.
| | - Mainak Sengupta
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
| |
Collapse
|
7
|
Cazzolla Gatti R. Why We Will Continue to Lose Our Battle with Cancers If We Do Not Stop Their Triggers from Environmental Pollution. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:6107. [PMID: 34198930 PMCID: PMC8201328 DOI: 10.3390/ijerph18116107] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/21/2021] [Accepted: 06/01/2021] [Indexed: 12/11/2022]
Abstract
Besides our current health concerns due to COVID-19, cancer is a longer-lasting and even more dramatic pandemic that affects almost a third of the human population worldwide. Most of the emphasis on its causes has been posed on genetic predisposition, chance, and wrong lifestyles (mainly, obesity and smoking). Moreover, our medical weapons against cancers have not improved too much during the last century, although research is in progress. Once diagnosed with a malignant tumour, we still rely on surgery, radiotherapy, and chemotherapy. The main problem is that we have focused on fighting a difficult battle instead of preventing it by controlling its triggers. Quite the opposite, our knowledge of the links between environmental pollution and cancer has surged from the 1980s. Carcinogens in water, air, and soil have continued to accumulate disproportionally and grow in number and dose, bringing us to today's carnage. Here, a synthesis and critical review of the state of the knowledge of the links between cancer and environmental pollution in the three environmental compartments is provided, research gaps are briefly discussed, and some future directions are indicated. New evidence suggests that it is relevant to take into account not only the dose but also the time when we are exposed to carcinogens. The review ends by stressing that more dedication should be put into studying the environmental causes of cancers to prevent and avoid curing them, that the precautionary approach towards environmental pollutants must be much more reactionary, and that there is an urgent need to leave behind the outdated petrochemical-based industry and goods production.
Collapse
Affiliation(s)
- Roberto Cazzolla Gatti
- Konrad Lorenz Institute for Evolution and Cognition Research, 3400 Klosterneuburg, Austria;
- Biological Institute, Tomsk State University, 634050 Tomsk, Russia
| |
Collapse
|
8
|
Pathak AK, Husain N, Kant S, Bala L. Relevance of genetic polymorphisms in tobacco-related detoxifying enzymes in non-small cell lung carcinoma susceptibility. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
9
|
Ritambhara, Tiwari S, Vijayaraghavalu S, Kumar M. Genetic Polymorphisms of Xenobiotic Metabolizing Genes (GSTM1, GSTT1, GSTP1), Gene-Gene Interaction with Association to Lung Cancer Risk in North India; A Case Control Study. Asian Pac J Cancer Prev 2019; 20:2707-2714. [PMID: 31554367 PMCID: PMC6976822 DOI: 10.31557/apjcp.2019.20.9.2707] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Indexed: 12/11/2022] Open
Abstract
Aim: In this case control study involving, 220 human subjects; polymorphisms in xenobiotic metabolizing
genes (GST-M1, -T1 and -P1) and their association to lung cancer risk is being analysed among smokers and nonsmokers.
GSTM1 or GSTT1 gene polymorphism and amino acid changes in GSTP1 have been correlated and may be
associated to lung cancer risk. Other factor includes exposure to environmental pollutants and life style choices. We
have explored gene-gene and gene-environment interaction in the aetiology of lung cancer risk among north Indian
population. Patients and Methods: For the study we have collected 120 lung cancer patient blood samples from
Kamala Nehru Memorial Cancer Hospital, Allahabad, Uttar Pradesh and 100 matched controls. DNA was isolated
and GST-M1 and - T1 genotyping were assessed by multiplex PCR whereas the GSTP1 polymorphism was analysed
using restriction fragment length polymorphism. The risk of lung carcinogenesis was assessed using logistic regression
analysis calculating the odd ratio (OR) with 95% confidence interval (CI). Results: The risk of lung carcinogenesis
was three fold higher for null GSTT1 (OR=3.045, 95%CI=1.750-5.301, p-value <0.001) genotype; whereas other two
types; GSTM1 (OR= 1.342, 95% CI=0.788-2.284, p-value=0.270) and GSTP1 (OR=0.806, 95% CI=0.526-1.236,
p-value=0.323) showed no association to lung cancer susceptibility respectively. Smokers diagnosed with lung cancer
had more null genotypes for GSTT1 (OR=4.773, 95%CI=1.939-11.751, p<0.001). The ‘at risk’ genotype combination
GSTM1 (null) /GSTT1 (null) (OR=1.76, 95%CI; 0.920-3.370, p-value=0.03) showed increased susceptibility to lung
cancer risk. The genotype combination of GSTT1 (null)/GSTP1 (Ile/Ile) (p=0.009) was associated with increased lung
cancer risk. Conclusion: The results of this study suggest that; GSTT1 null genotype were more susceptible for lung
cancer risk and smoking increases the susceptibility for lung cancer several folds among the North Indian population.
Gene-gene interaction for null genotypes of GSTM1 and GSTT1 were correlated with higher risk of having lung cancer.
Collapse
Affiliation(s)
- Ritambhara
- Department of Biochemistry, University of Allahabad, Allahabad, UP-211002, India.
| | - Sonia Tiwari
- Department of Radiation Oncology, Kamala Nehru Memorial Hospital, Allahabad, UP-211002, India
| | - Sivakumar Vijayaraghavalu
- Central Research Facility, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Porur, Chennai, 600116, Tamil Nadu, India
| | - Munish Kumar
- Department of Biochemistry, University of Allahabad, Allahabad, UP-211002, India.
| |
Collapse
|
10
|
Gupta S, Gupta R, Sinha DN, Mehrotra R. Relationship between type of smokeless tobacco & risk of cancer: A systematic review. Indian J Med Res 2018; 148:56-76. [PMID: 30264755 PMCID: PMC6172923 DOI: 10.4103/ijmr.ijmr_2023_17] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background & objectives: Causative linkages of smokeless tobacco (SLT) use with oral potentially malignant disorders and cancers of oral cavity, oesophagus and pancreas have been reported. Published meta-analyses have provided pooled risk estimates for major cancers caused by SLT, both on global and regional levels. This systematic review was aimed at summarizing the available studies on occurrence and mortality risk of common cancers due to various SLT products. Methods: PubMed and Google Scholar databases were systematically searched from 1985 till January 2018 for observational studies on SLT and cancer. The included studies were evaluated and data were extracted and reviewed. Results: The review included 80 studies providing 121 risk estimates for various cancers. Majority of the studies from South-East Asian Region (SEAR) and Eastern Mediterranean Region (EMR) showed a significant positive association of SLT use with oral [odds ratio (OR) ranging from 1.48 to 27.4] and oesophageal cancers (OR between 2.06 and 12.8), while studies from European Region (EUR) reported a positive association with pancreatic cancer (OR between 1.6 and 2.1). Cancer-related mortality was evaluated in a few reports with higher risk of mortality for lung (OR between 2.0 and 9.1), cervical (OR 2.0) and prostate (OR 2.1) cancers. A wide variation was noted in the association of various cancers and specific SLT products based on their nature, methods of use and inherent toxicity. The majority of chewing tobacco products displayed higher risk for oral and oesophageal cancers while the same was not observed for snus. Interpretation & conclusions: This review emphasizes on the significantly positive association of SLT use with oral and oesophageal cancers in SEAR and EMR and pancreatic cancer in EUR. Mortality estimates for SLT-associated cancers need further analysis. Risk analysis for cancers of other sites in SLT users also requires multicentric well-designed studies.
Collapse
Affiliation(s)
- Sanjay Gupta
- Division of Cytopathology, ICMR-National Institute of Cancer Prevention & Research, Noida, India
| | - Ruchika Gupta
- Division of Cytopathology, ICMR-National Institute of Cancer Prevention & Research, Noida, India
| | | | - Ravi Mehrotra
- WHO FCTC Global Knowledge Hub for Smokeless Tobacco, ICMR-National Institute of Cancer Prevention & Research, Noida, India
| |
Collapse
|
11
|
Mandal RK, Mittal RD. Glutathione S-Transferase P1 313 (A > G) Ile105Val Polymorphism Contributes to Cancer Susceptibility in Indian Population: A Meta-analysis of 39 Case-Control Studies. Indian J Clin Biochem 2018; 35:8-19. [PMID: 32071492 DOI: 10.1007/s12291-018-0787-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 09/08/2018] [Indexed: 12/17/2022]
Abstract
GSTP1 involved in the metabolism of carcinogens and toxins, reduces damage of DNA and act as a suppressor of carcinogenesis. Many studies have reported that 313 A > G polymorphism is associated with different cancer in Indian population, but the results remain conflicting rather than conclusive. Therefore, we have performed meta-analysis to clarify the more precise association of GSPT1 313 A > G polymorphism with cancer risk in Indian population. We retrieved all relevant published literature from PubMed (Medline) and Google scholar web database and included those study only based on the established inclusion criteria. Pooled ORs and 95% CIs were used to appraise the strength of association. Publication bias and sensitivity analysis was also evaluated. A total of 6581 confirmed cancer cases and 8218 controls were included from eligible thirty nine case-controls studies. Pooled analysis suggested that the variant genotypes significantly increased the risk of cancer in allele (G vs. A: OR 1.266, 95% CI 1.129-1.418, p = 0.001), heterozygous (AG vs. AA: OR 1.191, 95% CI 1.047-1.355, p = 0.008), homozygous (GG vs. AA: OR 1.811, 95% CI 1.428-2.297, p = 0.001), dominant (GG + AG vs. AA: OR 1.276, 95% CI 1.110-1.466, p = 0.001) and recessive (GG vs. AG + AA: OR 1.638, 95% CI 1.340-2.002, p = 0.001) genetic models. The stability of these observations was confirmed by a sensitivity analysis. Begger's funnel plot and Egger's test did not reveal any publication bias. This meta-analysis suggests that the GSTP1 313 A > G polymorphism may contribute to genetic susceptibility to cancer in Indian population. However, larger studies and randomized clinical trial will be required to elucidate the biological and molecular mechanism of GSTP1 gene in cancer.
Collapse
Affiliation(s)
- Raju K Mandal
- 1Research and Scientific Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, Kingdom of Saudi Arabia.,2Department of Urology and Renal Transplantation, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Rama D Mittal
- 2Department of Urology and Renal Transplantation, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| |
Collapse
|
12
|
Irimie AI, Braicu C, Cojocneanu R, Magdo L, Onaciu A, Ciocan C, Mehterov N, Dudea D, Buduru S, Berindan-Neagoe I. Differential Effect of Smoking on Gene Expression in Head and Neck Cancer Patients. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15071558. [PMID: 30041465 PMCID: PMC6069101 DOI: 10.3390/ijerph15071558] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/11/2018] [Accepted: 07/17/2018] [Indexed: 12/13/2022]
Abstract
Smoking is a well-known behavior that has an important negative impact on human health, and is considered to be a significant factor related to the development and progression of head and neck squamous cell carcinomas (HNSCCs). Use of high-dimensional datasets to discern novel HNSCC driver genes related to smoking represents an important challenge. The Cancer Genome Atlas (TCGA) analysis was performed in three co-existing groups of HNSCC in order to assess whether gene expression landscape is affected by tobacco smoking, having quit, or non-smoking status. We identified a set of differentially expressed genes that discriminate between smokers and non-smokers or based on human papilloma virus (HPV)16 status, or the co-occurrence of these two exposome components in HNSCC. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways classification shows that most of the genes are specific to cellular metabolism, emphasizing metabolic detoxification pathways, metabolism of chemical carcinogenesis, or drug metabolism. In the case of HPV16-positive patients it has been demonstrated that the altered genes are related to cellular adhesion and inflammation. The correlation between smoking and the survival rate was not statistically significant. This emphasizes the importance of the complex environmental exposure and genetic factors in order to establish prevention assays and personalized care system for HNSCC, with the potential for being extended to other cancer types.
Collapse
Affiliation(s)
- Alexandra Iulia Irimie
- Department of Prosthetic Dentistry and Dental Materials, Division Dental Propaedeutics, Aesthetic, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, 23 Marinescu Street, Cluj-Napoca 40015, Romania.
| | - Cornelia Braicu
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, Cluj-Napoca 40015, Romania.
| | - Roxana Cojocneanu
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, Cluj-Napoca 40015, Romania.
| | - Lorand Magdo
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, Cluj-Napoca 40015, Romania.
| | - Anca Onaciu
- MEDFUTURE-Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, 23 Marinescu Street, Cluj-Napoca 40015, Romania.
| | - Cristina Ciocan
- MEDFUTURE-Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, 23 Marinescu Street, Cluj-Napoca 40015, Romania.
| | - Nikolay Mehterov
- Department of Medical Biology, Faculty of Medicine, Medical University-Plovdiv, 15-А Vassil Aprilov Blvd., Plovdiv 4000, Bulgaria.
- Technological Center for Emergency Medicine, 15-А Vassil Aprilov Blvd., Plovdiv 4000, Bulgaria.
| | - Diana Dudea
- Department of Prosthetic Dentistry and Dental Materials, Division Dental Propaedeutics, Aesthetic, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, 23 Marinescu Street, Cluj-Napoca 40015, Romania.
| | - Smaranda Buduru
- Prosthetics and Dental Materials, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, 32 Clinicilor Street, Cluj-Napoca 400006, Romania.
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, Cluj-Napoca 40015, Romania.
- Department of Medical Biology, Faculty of Medicine, Medical University-Plovdiv, 15-А Vassil Aprilov Blvd., Plovdiv 4000, Bulgaria.
- Department of Functional Genomics and Experimental Pathology, The Oncology Institute Ion Chiricuta, Republicii 34th Street, Cluj-Napoca 400015, Romania.
| |
Collapse
|
13
|
Polymorphisms of vitamin K-related genes (EPHX1 and VKORC1L1) and stable warfarin doses. Gene 2018; 641:68-73. [DOI: 10.1016/j.gene.2017.10.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 10/05/2017] [Accepted: 10/16/2017] [Indexed: 01/05/2023]
|
14
|
Chen JB, Lee WC, Cheng BC, Moi SH, Yang CH, Lin YD. Impact of risk factors on functional status in maintenance hemodialysis patients. Eur J Med Res 2017; 22:54. [PMID: 29282123 PMCID: PMC5745856 DOI: 10.1186/s40001-017-0298-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 12/15/2017] [Indexed: 12/29/2022] Open
Abstract
Objectives To survey by measuring patient’s functional status which is crucial when end-stage renal disease patients begin a dialysis program. The influence of the disease on patients can be examined by the measurement of Karnofsky Performance Status (KPS) scores, together with a quality of life survey, and clinical variables. Methods The details for the dataset in the study were collected from patients receiving regular hemodialysis (HD) in one hospital, which were available retrospectively for 1166 patients during the 5-year study period. KPS scores were applied for quantifying functional status. To identify risk factors for functional status, clinical factors including demographics, laboratory data, and HD vintage were selected. This study applied a classification and regression tree approach (CART) and logistic regression to determine risk factors on functional impairment among HD patients. Results Ten risk factors were identified by CART and regression model (age, primary kidney disease subclass, treatment years, hemoglobin, albumin, creatinine, phosphorus, intact parathyroid hormone, ferritin, and cardiothoracic ratio). The results of logistic regression with selected interaction models showed older age or higher hematocrit, blood urea nitrogen, and glucose levels could significantly increase the log-odds of obtaining low KPS scores at in-person visits. Conclusions In interaction results, the combination of older age with higher albumin level and higher creatinine level with longer HD treatment years could significantly decrease the log-odds of a low KPS score assessment during in-person visits. Age, hemoglobin, albumin, urea, creatinine levels, primary kidney disease subclass, and HD duration are the major determinants for functional status in HD patients. Electronic supplementary material The online version of this article (10.1186/s40001-017-0298-1) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Jin-Bor Chen
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - Wen-Chin Lee
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - Ben-Chung Cheng
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - Sin-Hua Moi
- Department of Electronic Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, 80778, Taiwan
| | - Cheng-Hong Yang
- Department of Electronic Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, 80778, Taiwan. .,Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
| | - Yu-Da Lin
- Department of Electronic Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, 80778, Taiwan.
| |
Collapse
|
15
|
Bhardwaj A, Bahl C, Sharma S, Singh N, Behera D. Interactive potential of genetic polymorphism in Xenobiotic metabolising and DNA repair genes for predicting lung cancer predisposition and overall survival in North Indians. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2017; 826:15-24. [PMID: 29412865 DOI: 10.1016/j.mrgentox.2017.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/18/2017] [Accepted: 12/15/2017] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Cancer, a multi-step, multifactorial and multi-gene disease, not only damages the genomic integrity of the cell but also hinders the DNA repair mechanisms of the body. Gene-gene and gene environment interactions amongst the genetic polymorphisms together modulate the susceptibility towards a cancer. We have studied the high order gene interactions between the genetic polymorphism of detoxifying genes (CYP1A1, Ahr, XRCC and GST1) that play a key role in the metabolism of the xenobiotics and have been proved to be prognostic markers for lung cancer METHODS: 237 cases and 250 controls have been genotyped using PCR-RFLP technique. In order to find out the association, unconditional logistic regression approach was used and to analyse high order interactions MDR and CART was used. RESULTS In the MDR analysis, the best model was one factor model which included GSTM1 (CVC 10/10, Prediction error = 0.43, p < .001). The best three factor model comprised of XRCC1 632, XRCC1 206, GSTM1 (CVC 10/10, Prediction error = 0.45, p < .0001). The CART analysis exhibited that Node 1 carrying mutant type of GSTM1 imposed the highest risk towards lung cancer (OR = 11.0, 95%C.I. = 6.05-20.03, p = .000001). Wild type of GSTM1 when combined with mutant type of CYP1A1 M2 and XRCC1 632, an 8 fold risk towards lung cancer was observed (95%C.I. = 4.07-16.29, p = .00001). The high order interactions were used to predict the prognosis of lung cancer patients. Of all the genetic variants, XRCC1 632, GSTM1 and AhR rs2066853 was the most important determinant of overall survival of lung cancer patients CONCLUSION: Through the study we introduced the concept of polygenic approach to get an insight about the various polymorphic variants in determining cancer susceptibility. Lesser number of subjects were found in the high risk subgroups. Further studies with larger sample size are required to warranty the above findings.
Collapse
Affiliation(s)
- Apurva Bhardwaj
- Department of Biotechnology, Thapar University, Patiala, Punjab-147002, India
| | - Charu Bahl
- Department of Biotechnology, Thapar University, Patiala, Punjab-147002, India
| | - Siddharth Sharma
- Department of Biotechnology, Thapar University, Patiala, Punjab-147002, India.
| | - Navneet Singh
- Department of Pulmonary Medicine, Post Graduate Institute of Medical Education and Research (PGIMER), Sector 14, Chandigarh, India
| | - Digamber Behera
- Department of Pulmonary Medicine, Post Graduate Institute of Medical Education and Research (PGIMER), Sector 14, Chandigarh, India
| |
Collapse
|
16
|
Sengupta D, Guha U, Bhattacharjee S, Sengupta M. Association of 12 polymorphic variants conferring genetic risk to lung cancer in Indian population: An extensive meta-analysis. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2017; 58:688-700. [PMID: 29076184 DOI: 10.1002/em.22149] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 06/10/2017] [Accepted: 09/27/2017] [Indexed: 06/07/2023]
Abstract
Candidate gene as well as genome-wide association studies identified several polymorphic variants to be associated with lung cancer worldwide including in India. However, contradictory results have failed to estimate the overall effect of the polymorphic variants on the disease. Textmining was conducted on PubMed following specific search strings to gather all the publications related to genetic association with lung cancer in India. Out of 211 PubMed hits only 30 studies were selected for meta-analysis following specific inclusion criteria. Heterogeneity between studies was calculated by Cochran's Q-test (P < 0.05) and heterogeneity index (I2 ). Publication bias was visualized by funnel plots and Egger's regression test. For each variant, following a fixed-effect model, summary odds ratio (OR) along with 95% confidence interval (CI) was estimated. The meta-analysis revealed three polymorphic variants viz. 'deletion polymorphism (del1) (OR = 1.39, 95% CI = 1.03-1.87, P = 0.027) in GSTT1', 'deletion polymorphism (del2) (OR = 1.30, 95% CI = 1.01-1.67, P = 0.038) in GSTM1' and 'rs1048943 (OR = 1.98, 95% CI = 1.27-3.10, P = 0.002) in CYP1A1' to be associated with lung cancer. However, after multiple testing correction, only rs1048943 was found to be significantly associated (P value = 0.0321) with lung cancer. None of the polymorphic variants showed any evidence of heterogeneity between studies or of publication bias. Our meta-analysis revealed strong association of rs1048943 in CYP1A1, but a suggestive association of deletion polymorphisms in GSTT1 and GSTM1 with lung cancer, which provides a comprehensive insight on the overall effect of the polymorphic variants, reported in various case-control studies on Indian population, on the risk of lung cancer development. Environ. Mol. Mutagen. 58:688-700, 2017. © 2017 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
| | - Udayan Guha
- Dept. of Genetics, University of Calcutta, Kolkata, India
| | | | | |
Collapse
|
17
|
Huang J, Liu Y, Vitale S, Penning TM, Whitehead AS, Blair IA, Vachani A, Clapper ML, Muscat JE, Lazarus P, Scheet P, Moore JH, Chen Y. On meta- and mega-analyses for gene-environment interactions. Genet Epidemiol 2017; 41:876-886. [PMID: 29110346 DOI: 10.1002/gepi.22085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 08/01/2017] [Accepted: 08/09/2017] [Indexed: 01/09/2023]
Abstract
Gene-by-environment (G × E) interactions are important in explaining the missing heritability and understanding the causation of complex diseases, but a single, moderately sized study often has limited statistical power to detect such interactions. With the increasing need for integrating data and reporting results from multiple collaborative studies or sites, debate over choice between mega- versus meta-analysis continues. In principle, data from different sites can be integrated at the individual level into a "mega" data set, which can be fit by a joint "mega-analysis." Alternatively, analyses can be done at each site, and results across sites can be combined through a "meta-analysis" procedure without integrating individual level data across sites. Although mega-analysis has been advocated in several recent initiatives, meta-analysis has the advantages of simplicity and feasibility, and has recently led to several important findings in identifying main genetic effects. In this paper, we conducted empirical and simulation studies, using data from a G × E study of lung cancer, to compare the mega- and meta-analyses in four commonly used G × E analyses under the scenario that the number of studies is small and sample sizes of individual studies are relatively large. We compared the two data integration approaches in the context of fixed effect models and random effects models separately. Our investigations provide valuable insights in understanding the differences between mega- and meta-analyses in practice of combining small number of studies in identifying G × E interactions.
Collapse
Affiliation(s)
- Jing Huang
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Yulun Liu
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Steve Vitale
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Trevor M Penning
- Department of Systems Pharmacology and Translational Therapeutics, Center of Excellence in Environmental Toxicology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Alexander S Whitehead
- Department of Systems Pharmacology and Translational Therapeutics, Center of Excellence in Environmental Toxicology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Ian A Blair
- Department of Systems Pharmacology and Translational Therapeutics, Center of Excellence in Environmental Toxicology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Anil Vachani
- Pulmonary, Allergy, and Critical Care Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Margie L Clapper
- Cancer Prevention and Control Program, Fox Chase Cancer Center, Philadelphia, Pennsylvania, United States of America
| | - Joshua E Muscat
- Department of Public Health Sciences, Penn State College of Medicine, Hershey, Pennsylvania, United States of America
| | - Philip Lazarus
- Department of Pharmaceutical Sciences, Washington State University, Spokane, Washington, United States of America
| | - Paul Scheet
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Jason H Moore
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Yong Chen
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| |
Collapse
|
18
|
Metabolic Phase I (CYPs) and Phase II (GSTs) Gene Polymorphisms and Their Interaction with Environmental Factors in Nasopharyngeal Cancer from the Ethnic Population of Northeast India. Pathol Oncol Res 2017; 25:33-44. [PMID: 28952035 DOI: 10.1007/s12253-017-0309-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 09/13/2017] [Indexed: 01/06/2023]
Abstract
Multiple genetic and environmental factors and their interaction are believed to contribute in the pathogenesis of Nasopharyngeal Cancer (NPC). We investigate the role of Metabolic Phase I (CYPs) and Phase II (GSTs) gene polymorphisms, gene-gene and gene-environmental interaction in modulating the susceptibility to NPC in Northeast India. To determine the association of metabolic gene polymorphisms and environmental habits, 123 cases and 189 controls blood/swab samples were used for PCR and confirmed by Sanger sequencing. Analysis for GSTM1 and GSTT1 gene polymorphism was done by multiplex PCR. The T3801C in the 3'- flanking region of CYP1A1 gene was detected by PCR-RFLP method. The Logistic regression analysis was used to estimate odds ratios (OR) and 95% confidence intervals (95% CI). The GSTM1 null genotype alone (OR = 2.76) was significantly associated with NPC risk (P < 0.0001). The combinations of GSTM1 null and GSTT1 null genotypes also higher, 3.77 fold (P < 0.0001), risk of NPC, while GSTM1 null genotype along with CYP1A1 T3801C TC + CC genotype had 3.22 (P = 0.001) fold risk. The most remarkable risk was seen among individual carrying GSTM1 null, GSTT1 null genotypes and CYP1A1 T3801C TC + CC genotypes (OR = 5.71, P = 0.001). Further; analyses demonstrate an enhanced risk of NPC in smoked meat (OR = 5.56, P < 0.0001) and fermented fish consumers (OR = 5.73, P < 0.0001) carrying GSTM1 null genotype. An elevated risk of NPC was noted in smokers (OR = 12.67, P < 0.0001) and chewers (OR = 5.68, P < 0.0001) with GSTM1 null genotype. However, smokers had the highest risk of NPC among individuals carrying GSTT1 null genotype (OR = 4.46, P = 0.001) or CYP1A1 T3801C TC + CC genotype (OR = 7.13, P < 0.0001). The association of null genotypes and mutations of metabolic neutralizing genes along with the environmental habits (tobacco smokers and chewers, smoke meat, fermented fishes) can be used as a possible biomarker for early detection and preventive measure of NPC.
Collapse
|
19
|
Vinita K, Sripriya S, Philomenadin FMS, Vaitheeswaran K, Raman R, Sharma T. High order interaction analysis of SNPs in PEDF (rs12150053, rs12948385) and EPO (rs1617640) genes with clinical determinants of type 2 diabetic retinopathy patients from south India. Meta Gene 2017. [DOI: 10.1016/j.mgene.2017.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
20
|
Ciesielski TH, Aldrich MC, Marsit CJ, Hiatt RA, Williams SM. Transdisciplinary approaches enhance the production of translational knowledge. Transl Res 2017; 182:123-134. [PMID: 27893987 PMCID: PMC5362296 DOI: 10.1016/j.trsl.2016.11.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 10/12/2016] [Accepted: 11/02/2016] [Indexed: 12/28/2022]
Abstract
The primary goal of translational research is to generate and apply knowledge that can improve human health. Although research conducted within the confines of a single discipline has helped us to achieve this goal in many settings, this unidisciplinary approach may not be optimal when disease causation is complex and health decisions are pressing. To address these issues, we suggest that transdisciplinary approaches can facilitate the progress of translational research, and we review publications that demonstrate what these approaches can look like. These examples serve to (1) demonstrate why transdisciplinary research is useful, and (2) stimulate a conversation about how it can be further promoted. While we note that open-minded communication is a prerequisite for germinating any transdisciplinary work and that epidemiologists can play a key role in promoting it, we do not propose a rigid protocol for conducting transdisciplinary research, as one really does not exist. These achievements were developed in settings where typical disciplinary and institutional barriers were surmountable, but they were not accomplished with a single predetermined plan. The benefits of cross-disciplinary communication are hard to predict a priori and a detailed research protocol or process may impede the realization of novel and important insights. Overall, these examples demonstrate that enhanced cross-disciplinary information exchange can serve as a starting point that helps researchers frame better questions, integrate more relevant evidence, and advance translational knowledge more effectively. Specifically, we discuss examples where transdisciplinary approaches are helping us to better explore, assess, and intervene to improve human health.
Collapse
Affiliation(s)
- Timothy H Ciesielski
- Institute for Quantitative Biomedical Sciences, Dartmouth College, Hanover, NH; Department of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH; Public Health Program, Regis College, Weston, Mass.
| | - Melinda C Aldrich
- Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville, Tenn; Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn
| | - Carmen J Marsit
- Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, Hanover, NH; Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH
| | - Robert A Hiatt
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, Calif
| | - Scott M Williams
- Institute for Quantitative Biomedical Sciences, Dartmouth College, Hanover, NH; Department of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH
| |
Collapse
|
21
|
Ezzeldin N, El-Lebedy D, Darwish A, El-Bastawisy A, Hassan M, Abd El-Aziz S, Abdel-Hamid M, Saad-Hussein A. Genetic polymorphisms of human cytochrome P450 CYP1A1 in an Egyptian population and tobacco-induced lung cancer. Genes Environ 2017; 39:7. [PMID: 28074113 PMCID: PMC5219678 DOI: 10.1186/s41021-016-0066-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 12/08/2016] [Indexed: 01/20/2023] Open
Abstract
Background Cytochrome P450 CYP1A1 helps detoxify the potential carcinogens in tobacco smoke, it was reported that polymorphisms in the coding gene result in variation in the expression and activity levels which alter metabolism and clearance of carcinogens and therefore modify cancer risk. In this work, we aimed to identify CYP1A1 gene polymorphisms associated with lung cancer in Egyptian population and to examine the interaction effect with Tobacco smoking in modulating disease risk. Methods A case–control study was conducted on 150 unrelated lung cancer patients and 150 unrelated control subjects. Genomic DNA was extracted and sequencing analysis of CYP1A1 gene was performed on ABI PRISM 3100 genetic analyzer. Results Three variants in CYP1A1 gene were identified in heterozygous forms in lung cancer patients I462V, T461N and I286T. A combined variant T461N/ I462V associated with lung cancer and those who carried this variant were 2-times more likely to develop lung cancer (OR = 2.03, 95% CI = 1.81-2.29, P = 0.04), specially the non-small cell type (NSCLC) (OR = 2.20, 95% CI = 1.93–2.50, P = 0.02). Wild type was more frequent among smoker controls (83.3%) compared to smoker lung cancer patients (54.8%), P = 0.03. Association studies to examine the interaction effect of identified variants with Tobacco smoking in modulating disease risk showed no significant associations. Identified polymorphisms showed no significant implication on the stage or the prognosis of the disease. Conclusion Our findings support that CYP1A1 polymorphisms play a role in the pathogenesis of lung cancer. In Egyptian population, CYP1A1 I462V, T461N and I286T variants were identified among lung cancer patients and combined T461N/ I462V was a risk variant for NSCLC in non smokers.
Collapse
Affiliation(s)
- Nada Ezzeldin
- Chest Diseases, National Research Center, Cairo, Egypt
| | - Dalia El-Lebedy
- Department of Clinical and Chemical Pathology, National Research Center, Cairo, Egypt
| | - Amira Darwish
- Medical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Ahmed El-Bastawisy
- Medical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Mirhane Hassan
- Department of Clinical and Chemical Pathology, National Research Center, Cairo, Egypt
| | - Shereen Abd El-Aziz
- Department of Clinical and Chemical Pathology, National Research Center, Cairo, Egypt
| | | | - Amal Saad-Hussein
- Department of Environmental Health and Preventive Medicine, National Research Center, Cairo, Egypt
| |
Collapse
|
22
|
Zoliana B, Rohmingliana PC, Sahoo BK, Mishra R, Mayya YS. MEASUREMENT OF RADON CONCENTRATION IN DWELLINGS IN THE REGION OF HIGHEST LUNG CANCER INCIDENCE IN INDIA. RADIATION PROTECTION DOSIMETRY 2016; 171:192-195. [PMID: 27032781 DOI: 10.1093/rpd/ncw056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Indoor radon/thoron concentration has been measured in Aizawl district, Mizoram, India, which has the highest lung cancer incidence rates among males and females in India. Simultaneously, radon flux emanated from the surrounding soil of the dwellings was observed in selected places. The annual average value of concentration of radon(thoron) of Aizawl district is 48.8(22.65) Bq m-3 with a geometric standard deviation of 1.25(1.58). Measured radon flux from the soil has an average value of 22.6 mBq m-2 s-1 These results were found to be much below the harmful effect or action level as indicated by the World Health Organisation. On the other hand, food habit and high-level consumption of tobacco and its products in the district have been found to increase the risk of lung cancer incidence in the district.
Collapse
Affiliation(s)
- B Zoliana
- Department of Physics, Govt. Zirtiri Residential Science College, Aizawl, Mizoram 796 001, India
| | - P C Rohmingliana
- Department of Physics, Govt. Zirtiri Residential Science College, Aizawl, Mizoram 796 001, India
| | - B K Sahoo
- Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 094, India
| | - R Mishra
- Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 094, India
| | - Y S Mayya
- Indian Institute of Technology, Mumbai, India
| |
Collapse
|
23
|
Huang X, Cao M, Wang L, Wu S, Liu X, Li H, Zhang H, Wang RY, Sun X, Wei C, Baggerly KA, Roth JA, Wang M, Swisher SG, Fang B. Expression of sulfotransferase SULT1A1 in cancer cells predicts susceptibility to the novel anticancer agent NSC-743380. Oncotarget 2016; 6:345-54. [PMID: 25514600 PMCID: PMC4381599 DOI: 10.18632/oncotarget.2814] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 11/15/2014] [Indexed: 11/25/2022] Open
Abstract
The small molecule anticancer agent NSC-743380 modulates functions of multiple cancer-related pathways and is highly active in a subset of cancer cell lines in the NCI-60 cell line panel. It also has promising in vivo anticancer activity. However, the mechanisms underlying NSC-743380's selective anticancer activity remain uncharacterized. To determine biomarkers that may be used to identify responders to this novel anticancer agent, we performed correlation analysis on NSC-743380's anticancer activity and the gene expression levels in NCI-60 cell lines and characterized the functions of the top associated genes in NSC-743380–mediated anticancer activity. We found sulfotransferase SULT1A1 is causally associated with NSC-743380's anticancer activity. SULT1A1 was expressed in NSC-743380–sensitive cell lines but was undetectable in resistant cancer cells. Ectopic expression of SULT1A1 in NSC743380 resistant cancer cells dramatically sensitized the resistant cells to NSC-743380. Knockdown of the SULT1A1 in the NSC-743380 sensitive cancer cell line rendered it resistance to NSC-743380. The SULT1A1 protein levels in cell lysates from 18 leukemia cell lines reliably predicted the susceptibility of the cell lines to NSC-743380. Thus, expression of SULT1A1 in cancer cells is required for NSC-743380's anticancer activity and can be used as a biomarker for identification of NSC-743380 responders.
Collapse
Affiliation(s)
- Xiao Huang
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Mengru Cao
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA. The Fourth Department of Medicine Oncology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Li Wang
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Shuhong Wu
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Xiaoying Liu
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Hongyu Li
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Hui Zhang
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Rui-Yu Wang
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Xiaoping Sun
- Department of Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Caimiao Wei
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Keith A Baggerly
- Department of Bioinformatics and Computation Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jack A Roth
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Michael Wang
- Department of Lymphoma, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Stephen G Swisher
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Bingliang Fang
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| |
Collapse
|
24
|
Zhang S, Wang Y, Jiang H, Liu C, Gu H, Chen S, Kang M, Tang W. Association between the CD28 IVS3 +17T>C (rs3116496) polymorphism and cancer susceptibility: a meta-analysis involving 8,843 subjects. Int J Clin Exp Med 2015; 8:17353-17361. [PMID: 26770327 PMCID: PMC4694227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 10/03/2015] [Indexed: 06/05/2023]
Abstract
The possible association between CD28 IVS3 +17T>C (rs3116496) polymorphism and cancer susceptibility has been widely investigated. However, the results are conflicting. To verify the association more precisely, we performed a meta-analysis of 11 publications involving a total of 8,843 subjects. In this meta-analysis, 11 publications were included by searching PubMed and EMBASE databases up to May 23, 2014. The cancer susceptibility associated with the CD28 IVS3 +17T>C polymorphism was evaluated by odds ratios (ORs) with 95% confidence intervals (95% CIs). Heterogeneity, sensitivity and publication bias analyses were also assessed. The result suggested that the CD28 IVS3 +17T>C polymorphism is not associated with cancer susceptibility in overall cancer. In a stratified analysis by ethnicity, the association of CD28 IVS3 +17T>C polymorphism with cancer susceptibility was significant in Asians. In a stratified analysis by the origin of cancer cells and system of cancer, CD28 IVS3 +17T>C polymorphism was not associated with cancer susceptibility. In summary, this meta-analysis demonstrated that the CD28 IVS3 +17T>C polymorphism may be a cancer susceptibility factor in Asians.
Collapse
Affiliation(s)
- Sheng Zhang
- Department of General Surgery, Changzhou No. 3 People’s HospitalChangzhou, Jiangsu Province, China
| | - Yafeng Wang
- Department of Cardiology, The People’s Hospital of Xishuangbanna Dai Autonomous PrefectureJinghong, Yunnan Province, China
| | - Heping Jiang
- Department of Emergency, Affiliated Jintan People’s Hospital of Jiangsu UniversityJintan, China
| | - Chao Liu
- Department of Cardiothoracic Surgery, Affiliated People’s Hospital of Jiangsu UniversityZhenjiang, Jiangsu Province, China
| | - Haiyong Gu
- Department of Cardiothoracic Surgery, Affiliated People’s Hospital of Jiangsu UniversityZhenjiang, Jiangsu Province, China
| | - Shuchen Chen
- Department of Thoracic Surgery, The Union Clinical Medical College of Fujian Medical UniversityFuzhou, Fujian Province, China
| | - Mingqiang Kang
- Department of Thoracic Surgery, The Union Clinical Medical College of Fujian Medical UniversityFuzhou, Fujian Province, China
| | - Weifeng Tang
- Department of Cardiothoracic Surgery, Affiliated People’s Hospital of Jiangsu UniversityZhenjiang, Jiangsu Province, China
- Department of Thoracic Surgery, The Union Clinical Medical College of Fujian Medical UniversityFuzhou, Fujian Province, China
| |
Collapse
|
25
|
Xu X, Hua H, Fan B, Sun Q, Guo X, Zhang J. EPHX1 rs2234922 polymorphism and lung cancer susceptibility in Asian populations: a meta-analysis. J Thorac Dis 2015; 7:1125-9. [PMID: 26380727 DOI: 10.3978/j.issn.2072-1439.2015.07.03] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 06/30/2015] [Indexed: 11/14/2022]
Abstract
OBJECTIVE Polymorphisms of epoxide hydrolase 1 (EPHX1) rs2234922 have been reported to be associated with variations in EPHX1 activity. Many studies have investigated the association between EPHX1 rs2234922 polymorphism and lung cancer risk, but their results have been inconsistent. The purpose of this study was to perform a meta-analysis of all eligible studies to derive a more precise estimation of the associations of EPHX1 rs2234922 polymorphism with lung cancer. METHODS The PubMed was searched for case-control studies published up to Oct 01, 2014. Data were extracted and pooled odds ratios (ORs) with 95% confidence interval (CI) were calculated. The pooled ORs for the risk associated with the genotypes of homozygote G/G and G allele carriers (A/G + G/G) with the A/A genotype were calculated. Heterogeneity assumption was checked by the chi-square-based Q-test. A P value greater than 0.10 for the Q-test indicates a lack of heterogeneity among studies, so the pooled OR estimate of the each study was calculated by the fixed-effects model (the Mantel-Haenszel method). Otherwise, the random-effects model (the DerSimonian and Laird method) was used. RESULTS In this meta-analysis, we assessed eight published studies involving comprising 1,175 cases and 1,550 controls of the association between EPHX1 rs2234922 polymorphism and lung cancer risk. For the homozygote G/G and G allele carriers (A/G + G/G), the pooled ORs were 1.47 (95% CI: 1.18-1.79, P=0.007 for heterogeneity) and 1.36 (95% CI: 1.14-1.62, P=0.828 for heterogeneity), when compared with the homozygous wild-type genotype (A/A). CONCLUSIONS EPHX1 rs2234922 polymorphism contributes to risk of lung cancer among Asian population.
Collapse
Affiliation(s)
- Xuefang Xu
- Department of Oncology, Wuxi No. 2 People's Hospital, Affiliated to Nanjing Medical University, Wuxi 214002, China
| | - Hongxia Hua
- Department of Oncology, Wuxi No. 2 People's Hospital, Affiliated to Nanjing Medical University, Wuxi 214002, China
| | - Bing Fan
- Department of Oncology, Wuxi No. 2 People's Hospital, Affiliated to Nanjing Medical University, Wuxi 214002, China
| | - Qing Sun
- Department of Oncology, Wuxi No. 2 People's Hospital, Affiliated to Nanjing Medical University, Wuxi 214002, China
| | - Xuedan Guo
- Department of Oncology, Wuxi No. 2 People's Hospital, Affiliated to Nanjing Medical University, Wuxi 214002, China
| | - Jiawei Zhang
- Department of Oncology, Wuxi No. 2 People's Hospital, Affiliated to Nanjing Medical University, Wuxi 214002, China
| |
Collapse
|
26
|
Rodrigues P, de Marco G, Furriol J, Mansego ML, Pineda-Alonso M, Gonzalez-Neira A, Martin-Escudero JC, Benitez J, Lluch A, Chaves FJ, Eroles P. Oxidative stress in susceptibility to breast cancer: study in Spanish population. BMC Cancer 2014; 14:861. [PMID: 25416100 PMCID: PMC4251690 DOI: 10.1186/1471-2407-14-861] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 11/14/2014] [Indexed: 11/23/2022] Open
Abstract
Background Alterations in the redox balance are involved in the origin, promotion and progression of cancer. Inter-individual differences in the oxidative stress regulation can explain a part of the variability in cancer susceptibility. The aim of this study was to evaluate if polymorphisms in genes codifying for the different systems involved in oxidative stress levels can have a role in susceptibility to breast cancer. Methods We have analyzed 76 single base polymorphisms located in 27 genes involved in oxidative stress regulation by SNPlex technology. First, we have tested all the selected SNPs in 493 breast cancer patients and 683 controls and we have replicated the significant results in a second independent set of samples (430 patients and 803 controls). Gene-gene interactions were performed by the multifactor dimensionality reduction approach. Results Six polymorphisms rs1052133 (OGG1), rs406113 and rs974334 (GPX6), rs2284659 (SOD3), rs4135225 (TXN) and rs207454 (XDH) were significant in the global analysis. The gene-gene interactions demonstrated a significant four-variant interaction among rs406113 (GPX6), rs974334 (GPX6), rs105213 (OGG1) and rs2284659 (SOD3) (p-value = 0.0008) with high-risk genotype combination showing increased risk for breast cancer (OR = 1.75 [95% CI; 1.26-2.44]). Conclusions The results of this study indicate that different genotypes in genes of the oxidant/antioxidant pathway could affect the susceptibility to breast cancer. Furthermore, our study highlighted the importance of the analysis of the epistatic interactions to define with more accuracy the influence of genetic variants in susceptibility to breast cancer.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Pilar Eroles
- INCLIVA Biomedical Research Institute, Valencia, Spain.
| |
Collapse
|
27
|
Yu W, Lin Z, Qu B. Impact of Epoxide Hydrolase 1 Polymorphisms on Lung Cancer Susceptibility in Asian Populations. Cell Biochem Biophys 2014; 71:813-20. [DOI: 10.1007/s12013-014-0268-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
28
|
Yang X, Wang Y, Wang G. Quantitative assessment of the influence of EPHX1 gene polymorphisms and cancer risk: a meta-analysis with 94,213 subjects. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2014; 33:82. [PMID: 25261893 PMCID: PMC4189664 DOI: 10.1186/s13046-014-0082-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 09/22/2014] [Indexed: 12/13/2022]
Abstract
Purpose Previous studies investigating the association between EPHX1 polymorphisms (Tyr113His and His139Arg) and cancer risk have yielded inconsistent results. This meta-analysis was performed to derive a more precise estimation of relationship between two EPHX1 polymorphisms and risk of different types of cancer. Methods Data were extracted from relevant studies detected by a systematic literature search. Odds ratios (ORs) with 95% confidence intervals (CIs) were calculated to assess the strength of the association between EPHX1 polymorphisms and cancer risk. Results This meta-analysis carefully collected 99 studies on these two polymorphisms and cancer risk published up to March 2014, consisting of 45 studies (20,091 cases and 27,396 controls) for Tyr113His and 54 studies (19,437 cases and 27,289 controls) for His139Arg. The results in overall population did not show any significant association between these two polymorphisms and cancer risk for all genetic models. However, EPHX1 Tyr113His homozygote individuals have a significantly increased risk of cancer among Asians (homozygote model: OR =1.46, 95% CI=1.05–2.03; recessive model: OR =1.39, 95% CI =1.10–1.76) and mixed population (homozygote model: OR =1.17, 95% CI =1.02–1.34; recessive model: OR =1.17, 95% CI =1.02–1.33), but not Caucasians. Conclusion His/His genotype of EPHX1 Tyr113His polymorphism is a risk factor for developing caner for Asian and mixed population, while no evidence was found for the association between the EPHX1 His139Arg polymorphism and increased cancer risk. Electronic supplementary material The online version of this article (doi:10.1186/s13046-014-0082-9) contains supplementary material, which is available to authorized users.
Collapse
|
29
|
Xiao J, Zheng Y, Zhou Y, Zhang P, Wang J, Shen F, Fan L, Kolluri VK, Wang W, Yan X, Wang M. Sulfotransferase SULT1A1 Arg213His polymorphism with cancer risk: a meta-analysis of 53 case-control studies. PLoS One 2014; 9:e106774. [PMID: 25225888 PMCID: PMC4165769 DOI: 10.1371/journal.pone.0106774] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 07/30/2014] [Indexed: 01/14/2023] Open
Abstract
Background The SULT1A1 Arg213His (rs9282861) polymorphism is reported to be associated with many kinds of cancer risk. However, the findings are conflicting. For better understanding this SNP site and cancer risk, we summarized available data and performed this meta-analysis. Methods Data were collected from the following electronic databases: PubMed, Web of Knowledge and CNKI. The association was assessed by odd ratio (OR) and the corresponding 95% confidence interval (95% CI). Results A total of 53 studies including 16733 cancer patients and 23334 controls based on the search criteria were analyzed. Overall, we found SULT1A1 Arg213His polymorphism can increase cancer risk under heterozygous (OR = 1.09, 95% CI = 1.01–1.18, P = 0.040), dominant (OR = 1.10, 95% CI = 1.01–1.19, P = 0.021) and allelic (OR = 1.08, 95% CI = 1.02–1.16, P = 0.015) models. In subgroup analyses, significant associations were observed in upper aero digestive tract (UADT) cancer (heterozygous model: OR = 1.62, 95% CI = 1.11–2.35, P = 0.012; dominant model: OR = 1.63, 95% CI = 1.13–2.35, P = 0.009; allelic model: OR = 1.52, 95% CI = 1.10–2.11, P = 0.012) and Indians (recessive model: OR = 1.93, 95% CI = 1.22–3.07, P = 0.005) subgroups. Hospital based study also showed marginally significant association. In the breast cancer subgroup, ethnicity and publication year revealed by meta-regression analysis and one study found by sensitivity analysis were the main sources of heterogeneity. The association between SULT1A1 Arg213His and breast cancer risk was not significant. No publication bias was detected. Conclusions The present meta-analysis suggests that SULT1A1 Arg213His polymorphism plays an important role in carcinogenesis, which may be a genetic factor affecting individual susceptibility to UADT cancer. SULT1A1 Arg213His didn't show any association with breast cancer, but the possible risk in Asian population needs further investigation.
Collapse
Affiliation(s)
- Juanjuan Xiao
- Department of Biochemical and Molecular Biology, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Yabiao Zheng
- Department of Biochemical and Molecular Biology, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Yinghui Zhou
- Department of Biochemical and Molecular Biology, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Ping Zhang
- Department of Biochemical and Molecular Biology, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Jianguo Wang
- Department of Biochemical and Molecular Biology, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Fangyuan Shen
- Department of Biochemical and Molecular Biology, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Lixia Fan
- Department of Biochemical and Molecular Biology, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Vijay Kumar Kolluri
- Department of Biochemical and Molecular Biology, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Weiping Wang
- Department of Biochemical and Molecular Biology, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Xiaolong Yan
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
- * E-mail: (XLY); (MHW)
| | - Minghua Wang
- Department of Biochemical and Molecular Biology, Medical College, Soochow University, Suzhou, Jiangsu, China
- * E-mail: (XLY); (MHW)
| |
Collapse
|
30
|
Baldwin DA, Sarnowski CP, Reddy SA, Blair IA, Clapper M, Lazarus P, Li M, Muscat JE, Penning TM, Vachani A, Whitehead AS. Development of a genotyping microarray for studying the role of gene-environment interactions in risk for lung cancer. J Biomol Tech 2014; 24:198-217. [PMID: 24294113 DOI: 10.7171/jbt.13-2404-004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A microarray (LungCaGxE), based on Illumina BeadChip technology, was developed for high-resolution genotyping of genes that are candidates for involvement in environmentally driven aspects of lung cancer oncogenesis and/or tumor growth. The iterative array design process illustrates techniques for managing large panels of candidate genes and optimizing marker selection, aided by a new bioinformatics pipeline component, Tagger Batch Assistant. The LungCaGxE platform targets 298 genes and the proximal genetic regions in which they are located, using ≈ 13,000 DNA single nucleotide polymorphisms (SNPs), which include haplotype linkage markers with a minimum allele frequency of 1% and additional specifically targeted SNPs, for which published reports have indicated functional consequences or associations with lung cancer or other smoking-related diseases. The overall assay conversion rate was 98.9%; 99.0% of markers with a minimum Illumina design score of 0.6 successfully generated allele calls using genomic DNA from a study population of 1873 lung-cancer patients and controls.
Collapse
Affiliation(s)
- Don A Baldwin
- Pathonomics LLC, Philadelphia, Pennsylvania 19104, USA; ; Center of Excellence in Environmental Toxicology
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Jiang XY, Chang FH, Bai TY, Lv XL, Wang MJ, Wang G. Susceptibility of Lung Cancer with Polymorphisms of CYP1A1, GSTM1, GSTM3, GSTT1 and GSTP1 Genotypes in the Population of Inner Mongolia Region. Asian Pac J Cancer Prev 2014; 15:5207-14. [DOI: 10.7314/apjcp.2014.15.13.5207] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
32
|
Zhang R, Chu M, Zhao Y, Wu C, Guo H, Shi Y, Dai J, Wei Y, Jin G, Ma H, Dong J, Yi H, Bai J, Gong J, Sun C, Zhu M, Wu T, Hu Z, Lin D, Shen H, Chen F. A genome-wide gene-environment interaction analysis for tobacco smoke and lung cancer susceptibility. Carcinogenesis 2014; 35:1528-35. [PMID: 24658283 PMCID: PMC4076813 DOI: 10.1093/carcin/bgu076] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 03/18/2014] [Accepted: 03/18/2014] [Indexed: 12/19/2022] Open
Abstract
Tobacco smoke is the major environmental risk factor underlying lung carcinogenesis. However, approximately one-tenth smokers develop lung cancer in their lifetime indicating there is significant individual variation in susceptibility to lung cancer. And, the reasons for this are largely unknown. In particular, the genetic variants discovered in genome-wide association studies (GWAS) account for only a small fraction of the phenotypic variations for lung cancer, and gene-environment interactions are thought to explain the missing fraction of disease heritability. The ability to identify smokers at high risk of developing cancer has substantial preventive implications. Thus, we undertook a gene-smoking interaction analysis in a GWAS of lung cancer in Han Chinese population using a two-phase designed case-control study. In the discovery phase, we evaluated all pair-wise (591 370) gene-smoking interactions in 5408 subjects (2331 cases and 3077 controls) using a logistic regression model with covariate adjustment. In the replication phase, promising interactions were validated in an independent population of 3023 subjects (1534 cases and 1489 controls). We identified interactions between two single nucleotide polymorphisms and smoking. The interaction P values are 6.73 × 10(-) (6) and 3.84 × 10(-) (6) for rs1316298 and rs4589502, respectively, in the combined dataset from the two phases. An antagonistic interaction (rs1316298-smoking) and a synergetic interaction (rs4589502-smoking) were observed. The two interactions identified in our study may help explain some of the missing heritability in lung cancer susceptibility and present strong evidence for further study of these gene-smoking interactions, which are benefit to intensive screening and smoking cessation interventions.
Collapse
Affiliation(s)
- Ruyang Zhang
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Minjie Chu
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Yang Zhao
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Chen Wu
- State Key Laboratory of Molecular Oncology and Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Huan Guo
- Institute of Occupational Medicine and Ministry of Education, Key Laboratory for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yongyong Shi
- Bio-X Center and Affiliated Changning Mental Health Center, Ministry of Education Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Juncheng Dai
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Yongyue Wei
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Guangfu Jin
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Hongxia Ma
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Jing Dong
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Honggang Yi
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Jianling Bai
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Jianhang Gong
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Chongqi Sun
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Meng Zhu
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Tangchun Wu
- Institute of Occupational Medicine and Ministry of Education, Key Laboratory for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhibin Hu
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China, Section of Clinical Epidemiology, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing 210029, China and State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, China
| | - Dongxin Lin
- State Key Laboratory of Molecular Oncology and Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Hongbing Shen
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China, Section of Clinical Epidemiology, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing 210029, China and State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, China
| | - Feng Chen
- Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China,
| |
Collapse
|
33
|
Yang J, Zhao H, Xin Y, Fan L. MicroRNA-198 inhibits proliferation and induces apoptosis of lung cancer cells via targeting FGFR1. J Cell Biochem 2014; 115:987-95. [PMID: 24357456 DOI: 10.1002/jcb.24742] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 12/06/2013] [Indexed: 12/20/2022]
Abstract
Lung cancer is the most common cause of death from cancer worldwide and recent studies have revealed that microRNAs play critical roles to regulate lung carcinogenesis. Here we present evidence to show the role of miR-198 in lung cancer development. Our results showed that ectopic expression of miR-198 inhibits the viability and induces the apoptosis of human non-small cell lung cancer cells A549 and NCI-H460, while miR-198 inhibition resulted in opposite changes. In nude mice miR-198 inhibits A549 growth of tumor graft. We further demonstrated that miR-198 directly targets fibroblast growth factor receptor 1 (FGFR1) in lung cancer cells. Restoring FGFR1 expression blocked the inhibitory function of miR-198, while FGFR1 inhibition achieved the similar phenotypes of miR-198 overexpression. Hence, our data delineates the molecular pathway by which miR-198 inhibits lung cancer cellular proliferation and induces apoptosis, and may have important implication for the treatment of lung carcinogenesis.
Collapse
Affiliation(s)
- Jun Yang
- Thoracic Department, Shanghai Chest Hospital Affiliated to Shanghai JiaoTong University, Shanghai, 200030, China
| | | | | | | |
Collapse
|
34
|
Mei C, Hou M, Guo S, Hua F, Zheng D, Xu F, Jiang Y, Li L, Qiao Y, Fan Y, Zhou Q. Polymorphisms in DNA repair genes of XRCC1, XPA, XPC, XPD and associations with lung cancer risk in Chinese people. Thorac Cancer 2014; 5:232-42. [PMID: 26767006 DOI: 10.1111/1759-7714.12073] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 09/01/2013] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The carcinogenic chemicals and reactive oxygen species in tobacco can result in DNA damage. DNA repair genes play an important role in maintaining genome integrity. Genetic polymorphisms of DNA repair genes and smoking may contribute to susceptibility of lung cancer. METHODS In this hospital-based case-control study, we investigated the relationship between 13 tagging single nucleotide polymorphisms (SNPs) in base excision repair pathway and nucleotide excision repair pathway genes, smoking, and lung cancer susceptibility. Thirteen tag SNPs were genotyped in 265 lung cancer patients and 301 healthy controls. Logistic regression and multifactor dimensionality reduction method were applied to explore the association and high-order gene-gene and gene-smoking interaction. RESULTS In single tag SNP analysis, XPA rs2808668, XPC rs2733533, and XPD rs1799787 were significantly associated with lung cancer susceptibility. Joint effects analysis of XPA rs2808668, XPC rs2733533 and XPD rs1799787 showed that there was an increased risk of lung cancer with increasing numbers of risk alleles. Haplotype analysis showed that XRCC1 (rs25487, rs1799782, rs3213334) GCC had a positive association with lung cancer. Analysis of gene-gene and gene-smoking interaction by multifactor dimensionality reduction showed that a positive interaction existed between the four genes and smoking. The two-factor model, including XPC rs2755333 and smoking, had the best prediction ability for lung cancer. Compared with the C/C genotype of XPC rs2733533 and no smoking, the combination of genotype A carriers with XPC rs2733533 and heavy smokers (≥30 pack-year) had a 13.32-fold risk of lung cancer. CONCLUSION Our results suggest multiple genetic variants in multiple DNA repair genes may jointly contribute to lung cancer risk through gene-gene and gene-smoking interactions.
Collapse
Affiliation(s)
- Chaorong Mei
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital Tianjin, China; Tibet Chengdu branch of West China Hospital, Sichuan University Changdu, China
| | - Mei Hou
- Cancer Center, West China Hospital, Sichuan University Chengdu, China
| | - Shanxian Guo
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital Tianjin, China
| | - Feng Hua
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital Tianjin, China
| | - Dejie Zheng
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital Tianjin, China
| | - Feng Xu
- Cancer Center, West China Hospital, Sichuan University Chengdu, China
| | - Yong Jiang
- Department of Cancer Epidemiology, Cancer Institute, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing, China
| | - Lu Li
- Cancer Center, West China Hospital, Sichuan University Chengdu, China
| | - Youlin Qiao
- Department of Cancer Epidemiology, Cancer Institute, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing, China
| | - Yaguang Fan
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital Tianjin, China
| | - Qinghua Zhou
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital Tianjin, China
| |
Collapse
|
35
|
Wasson MK, Chauhan PS, Singh LC, Katara D, Dev Sharma J, Zomawia E, Kataki A, Kapur S, Saxena S. Association of DNA repair and cell cycle gene variations with breast cancer risk in Northeast Indian population: a multiple interaction analysis. Tumour Biol 2014; 35:5885-94. [DOI: 10.1007/s13277-014-1779-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 02/19/2014] [Indexed: 10/25/2022] Open
|
36
|
Xu CH, Wang Q, Zhan P, Qian Q, Yu LK. GSTP1 Ile105Val polymorphism is associated with lung cancer risk among Asian population and smokers: an updated meta-analysis. Mol Biol Rep 2014; 41:4199-212. [PMID: 24566690 DOI: 10.1007/s11033-014-3290-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 02/13/2014] [Indexed: 11/25/2022]
Abstract
Many studies have examined the association between the GSTP1 Ile105Val (rs 1695) gene polymorphism and lung cancer risk in various populations, but their results have been inconsistent. To assess this relationship more precisely, a meta-analysis was performed. The PubMed and CNKI database was searched for case-control studies published up to July 2012. Data were extracted and pooled odds ratios (OR) with 95% confidence intervals (CI) were calculated. Ultimately, 42 studies, comprising 12,304 lung cancer cases and 15,729 controls were included. Overall, for G allele carriers (GA + GG) versus homozygote AA, the pooled OR was 1.05 (95% CI 0.99-1.10 P = 0.092 for heterogeneity), for GG versus AA the pooled OR was 1.04 (95% CI 0.96-1.12 P = 0.084 for heterogeneity). In the stratified analysis by ethnicity, gender, histological types of lung cancer and smoking status, a significant association was found in Asians and smokers, not in Caucasian or mixed population, Male, Female population, lung AC, SCC, SCLC or non-smokers. Publication bias was found by using the funnel plot and Egger's test. Overall, there is no evidence showing a significant correlation between GSTP1 Ile105Val gene polymorphism and lung cancer risk in overall population, however stratified analysis by ethnicity, histology, gender and smoking status, it correlate with increased lung cancer susceptibility among Asians and smokers.
Collapse
Affiliation(s)
- Chun-hua Xu
- First Department of Respiratory Medicine, Nanjing Chest Hospital, 215 Guangzhou Road, Nanjing, 210029, China
| | | | | | | | | |
Collapse
|
37
|
Association between the CYP1A1 T3801C polymorphism and risk of cancer: Evidence from 268 case–control studies. Gene 2014. [DOI: 10.1016/j.gene.2013.10.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
38
|
Hensing T, Chawla A, Batra R, Salgia R. A personalized treatment for lung cancer: molecular pathways, targeted therapies, and genomic characterization. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 799:85-117. [PMID: 24292963 DOI: 10.1007/978-1-4614-8778-4_5] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Lung cancer is a heterogeneous, complex, and challenging disease to treat. With the arrival of genotyping and genomic profiling, our simple binary division of lung cancer into non-small-cell lung cancer (NSCLC) and small-cell lung cancer (SCLC) is no longer acceptable. In the past decade and with the advent of personalized medicine, multiple advances have been made in understanding the underlying biology and molecular mechanisms of lung cancer. Lung cancer is no longer considered a single disease entity and is now being subdivided into molecular subtypes with dedicated targeted and chemotherapeutic strategies. The concept of using information from a patient's tumor to make therapeutic and treatment decisions has revolutionized the landscape for cancer care and research in general.Management of non-small-cell lung cancer, in particular, has seen several of these advances, with the understanding of activating mutations in EGFR, fusion genes involving ALK, rearrangements in ROS-1, and ongoing research in targeted therapies for K-RAS and MET. The next era of personalized treatment for lung cancer will involve a comprehensive genomic characterization of adenocarcinoma, squamous-cell carcinoma, and small-cell carcinoma into various subtypes. Future directions will involve incorporation of molecular characteristics and next generation sequencing into screening strategies to improve early detection, while also having applications for joint treatment decision making in the clinics with patients and practitioners. Personalization of therapy will involve close collaboration between the laboratory and the clinic. Given the heterogeneity and complexity of lung cancer treatment with respect to histology, tumor stage, and genomic characterization, mind mapping has been developed as one of many tools which can assist physicians in this era of personalized medicine. We attempt to utilize the above tool throughout this chapter, while reviewing lung cancer epidemiology, lung cancer treatment, and the genomic characterization of lung cancer.
Collapse
Affiliation(s)
- Thomas Hensing
- Department of Medicine, Section of Hematology/Oncology, NorthShore University Health System, Kellogg Cancer Center, 2650 Ridge Avenue, Evanston, IL, 60201, USA,
| | | | | | | |
Collapse
|
39
|
Distribution of genetic polymorphisms of genes encoding drug metabolizing enzymes & drug transporters - a review with Indian perspective. Indian J Med Res 2014; 139:27-65. [PMID: 24604039 PMCID: PMC3994740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Phase I and II drug metabolizing enzymes (DME) and drug transporters are involved in the absorption, distribution, metabolism as well as elimination of many therapeutic agents, toxins and various pollutants. Presence of genetic polymorphisms in genes encoding these proteins has been associated with marked inter-individual variability in their activity that could result in variation in drug response, toxicity as well as in disease predisposition. The emergent field pharmacogenetics and pharmacogenomics (PGx) is a promising discipline, as it predicts disease risk, selection of proper medication with regard to response and toxicity, and appropriate drug dosage guidance based on an individual's genetic make-up. Consequently, genetic variations are essential to understand the ethnic differences in disease occurrence, development, prognosis, therapeutic response and toxicity. For that reason, it is necessary to establish the normative frequency of these genes in a particular population before unraveling the genotype-phenotype associations. Although a fair amount of allele frequency data are available in Indian populations, the existing pharmacogenetic data have not been compiled into a database. This review was intended to compile the normative frequency distribution of the variants of genes encoding DMEs (CYP450s, TPMT, GSTs, COMT, SULT1A1, NAT2 and UGTs) and transporter proteins (MDR1, OCT1 and SLCO1B1) with Indian perspective.
Collapse
|
40
|
Tang W, Qiu H, Ding H, Sun B, Wang L, Yin J, Gu H. Association between the STK15 F31I polymorphism and cancer susceptibility: a meta-analysis involving 43,626 subjects. PLoS One 2013; 8:e82790. [PMID: 24349361 PMCID: PMC3862673 DOI: 10.1371/journal.pone.0082790] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 10/28/2013] [Indexed: 12/11/2022] Open
Abstract
The association between the Serine/threonine kinase 15 (STK15) F31I polymorphism (rs2273535) and cancer susceptibility remains controversial. To further investigate this potential relationship, we conducted a comprehensive meta-analysis of 27 published studies involving a total of 19,267 multiple cancer cases and 24,359 controls. Our results indicate statistical evidence of an association between the STK15 F31I polymorphism and the increased risk of overall cancer in four genetic models: AA vs. TA+TT, AA vs. TT, AA vs. TA, and A vs. T. In a stratified analysis by cancer type, there was an increased risk of breast cancer in four genetic models: AA vs. TA+TT, AA vs. TT, AA vs. TA, and A vs. T, as well as esophageal cancer in two genetic models: AA vs. TA+TT and AA vs. TA. In a stratified analysis by ethnicity, there was a significant increase in cancer risk among Asians, but not Caucasians, in four genetic models: AA vs. TA+TT, AA vs. TT, AA vs. TA and A vs. T. In addition, a stratified analysis by ethnicity in the breast cancer subgroup revealed a significant increase in cancer risk among Asians in two genetic models: AA vs. TA+TT and AA vs. TT, as well as among Caucasians in one genetic model: AA vs. TA. In summary, this meta-analysis demonstrates that the STK15 F31I polymorphism may be a risk factor for cancer.
Collapse
Affiliation(s)
- Weifeng Tang
- Department of Cardiothoracic Surgery, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, China
| | - Hao Qiu
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Hao Ding
- Department of Respiratory Disease, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, China
| | - Bin Sun
- Department of Cardiothoracic Surgery, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, China
| | - Lixin Wang
- Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China
| | - Jun Yin
- Department of Cardiothoracic Surgery, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, China
- * E-mail: (JY); (HG)
| | - Haiyong Gu
- Department of Cardiothoracic Surgery, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, China
- * E-mail: (JY); (HG)
| |
Collapse
|
41
|
Qi Y, Zhao H, Wang Y, Wang Y, Lu C, Xiao Y, Cao J, Jia N, Wang B, Niu W. Replication of the top 10 most significant polymorphisms from a large blood pressure genome-wide association study of northeastern Han Chinese East Asians. Hypertens Res 2013; 37:134-8. [PMID: 24196197 DOI: 10.1038/hr.2013.132] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 06/20/2013] [Accepted: 07/01/2013] [Indexed: 01/11/2023]
Abstract
The replication of genome-wide significant association signals in independent populations is a practical approach for characterizing gene-disease relationships. Therefore, we sought to explore the top 10 polymorphisms from a large blood pressure genome-wide association study of northeastern Han Chinese East Asians. This was a hospital-based study involving 1009 patients with essential hypertension and 756 normotensive controls from Qiqihar city, China. Genotyping was conducted with a polymerase chain reaction-ligase detection reaction method. All polymorphisms except for rs6825911 satisfied Hardy-Weinberg equilibrium. Overall, the genotype differences between the patients and controls were significant for rs35444 (P<0.001), rs11191548 (P=0.017) and rs17249754 (P=0.017). The per-minor-allele odds ratios of rs35444, rs11191548 and rs17249754 were 0.54 (95% confidence interval (95% CI): 0.46-0.62; P<0.01), 1.23 (95% CI: 1.07-1.43; P=0.005) and 1.23 (95% CI: 1.07-1.41; P=0.004), respectively. Similarly, the carriers of minor homozygotes had a significant reduction in adjusted systolic and diastolic blood pressure for rs35444 (P<0.01) but an increase for both rs11191548 (P<0.01) and rs17249754 (P<0.04). Further application of the genetic risk score method indicated that subjects with risk scores of 8, 10 and 12-16 had 1.66-fold (95% CI: 1.01-2.72), 1.72-fold (95% CI: 1.03-2.86) and 1.97-fold (95% CI: 1.12-3.46) increases, respectively, in the odds of developing hypertension, and similar increases were also observed for blood pressure. Taken together, our findings demonstrate that although only three of the top 10 polymorphisms were successfully validated in the northeastern Han Chinese population, the genetic risk score analyses led us to more profound insights into the possible joint effects of multiple polymorphisms on hypertension risk and blood pressure variation.
Collapse
Affiliation(s)
- Yue Qi
- Department of Epidemiology, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China
| | - Hongye Zhao
- Department of Physiology, Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - Yanli Wang
- Department of Cardiology, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - Yuefei Wang
- Department of Physiology, Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - Changzhu Lu
- Department of Physiology, Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - Yu Xiao
- Department of Physiology, Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - Jun Cao
- Department of Property Theory and Complication, Science of Materia Medica, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Nan Jia
- 1] Department of Hypertension, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China [2] Shanghai Institute of Hypertension, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China [3] State Key Laboratory of Medical Genomics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bin Wang
- Department of Physiology, Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - Wenquan Niu
- 1] Shanghai Institute of Hypertension, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China [2] State Key Laboratory of Medical Genomics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
42
|
Lung Cancer Screening: Review and Performance Comparison Under Different Risk Scenarios. Lung 2013; 192:55-63. [DOI: 10.1007/s00408-013-9517-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 10/02/2013] [Indexed: 02/04/2023]
|
43
|
Daniels J, Kadlubar S. Sulfotransferase genetic variation: from cancer risk to treatment response. Drug Metab Rev 2013; 45:415-22. [PMID: 24010997 DOI: 10.3109/03602532.2013.835621] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cytosolic sulfotransferases (SULTs) are phase II detoxification enzymes that are involved in the biotransformation of a wide variety of structurally diverse endo- and xenobiotics. Single-nucleotide polymorphisms (SNPs) in SULTs can alter the phenotype of the translated proteins. SNPs in some SULTs are fairly uncommon in the population, but some, most notably for SULT isoform 1A1, are commonly found and have been associated with cancer risk for a variety of tumor sites and also with response to therapeutic agents. SNPs in many SULTs vary by ethnicity, another factor that could influence SULT-associated disease risk and pharmacogenetics. This review surveys the current knowledge of SULT genetic variability in relation to cancer risk and response to therapy, focusing primarily on SULT1A1.
Collapse
Affiliation(s)
- Jaclyn Daniels
- Department of Medical Genetics, College of Medicine, University of Arkansas for Medical Sciences , Little Rock, AR , USA
| | | |
Collapse
|
44
|
Contributory role of five common polymorphisms of RAGE and APE1 genes in lung cancer among Han Chinese. PLoS One 2013; 8:e69018. [PMID: 23874853 PMCID: PMC3708913 DOI: 10.1371/journal.pone.0069018] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 06/02/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Lung cancer is the leading cause of cancer mortality in China. Given the ubiquitous nature of gene-to-gene interaction in lung carcinogenesis, we sought to evaluate five common polymorphisms from advanced glycosylation end product-specific receptor (RAGE) and apurinic/apyrimidinic endonuclease 1 (APE1) genes in association with lung cancer among Han Chinese. METHODS AND RESULTS 819 patients with lung cancer and 803 cancer-free controls were recruited from Qiqihar city. Genotypes of five examined polymorphisms (RAGE gene: rs1800625, rs1800624, rs2070600; APE1 gene: rs1760944, rs1130409) were determined by ligase detection reaction method. Data were analyzed by R software and multifactor dimensionality reduction (MDR). Hardy-Weinberg equilibrium was satisfied for all five polymorphisms. Overall differences in the genotype and allele distributions were significant for rs1800625 (Pgenotype<0.0005; Pallele<0.0005), rs2070600 (Pgenotype = 0.005; Pallele = 0.004) and rs1130409 (Pgenotype = 0.009; Pallele = 0.004) polymorphisms. Haplotype C-A-A (alleles in order of rs1800625, rs1800624 and rs2070600) of RAGE gene was overrepresented in patients, and conferred a 2.1-fold increased risk of lung cancer (95% confidence interval: 1.52-2.91), independent of confounding factors. Further application of MDR method to five examined polymorphisms identified the overall best interaction model including rs2070600 and rs1130409 polymorphisms. This model had a maximal testing accuracy of 64.63% and a maximal cross-validation consistency of 9 out of 10 at the significant level of 0.006. CONCLUSIONS Our findings demonstrated a potential interactive contribution of RAGE and APE1 genes to the pathogenesis of lung cancer among Han Chinese. Further studies are warranted to confirm or refute these findings.
Collapse
|
45
|
Peluso MEM, Munnia A, Srivatanakul P, Jedpiyawongse A, Sangrajrang S, Ceppi M, Godschalk RWL, van Schooten FJ, Boffetta P. DNA adducts and combinations of multiple lung cancer at-risk alleles in environmentally exposed and smoking subjects. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2013; 54:375-383. [PMID: 23797975 DOI: 10.1002/em.21788] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 04/23/2013] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
Interindividual variation in DNA adduct levels in individuals exposed to similar amounts of environmental carcinogens may be due to genetic variability. We analysed the influence of genes involved in determining/modifying DNA damage, including microsomal epoxide hydrolase1 (EPHX1) His139Arg, N-acetyl-transferase, NAD(P)H:quinone oxidoreductase1 (NQO1) Pro187Ser, manganese superoxide dismutase2 (MnSOD2) Val16Ala, and apurinic/apyrimidinic endonuclease1 (APE1) Asp148Glu polymorphisms in blood of 120 smokers. Subsequently, we examined the effects of the combinations of the variant alleles of EPHX, NQO1 and MnSOD2 together with the wild type allele of APE1 on DNA damage by calculating the "sum of at-risk alleles." We reviewed the studies examining the relationships of DNA adducts with at-risk alleles in environmentally exposed subjects. Our findings showed that smokers carrying the EPHX1-139Arg and the NQO1-187Ser variants were significantly more likely to have higher adduct levels. Null associations were found with the other variants. Nevertheless, DNA adduct levels in smokers with ≥5 at-risk alleles were significantly different from those with fewer than two alleles. A similar picture emerged from studies of DNA adducts and at-risk alleles in environmentally exposed and smoking subjects. Certain at-risk allele combinations may confer a greater likelihood of increased levels of adducts after environmental insults. The increase in DNA adduct levels in susceptible subjects exposed to environmental carcinogens may reflect changes in the mechanisms that protect cells from the accumulation of genetic damage. Alterations of the physiological processes designed to maintain homeostasis may reduce the individual "genotoxic tolerance" to environmental challenges and result in phenotypes characterized by high levels of DNA adducts.
Collapse
Affiliation(s)
- Marco E M Peluso
- Cancer Risk Factor Branch, Cancer Prevention and Research Institute, Florence, Italy.
| | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Rodrigues P, Furriol J, Tormo E, Ballester S, Lluch A, Eroles P. Epistatic interaction of Arg72Pro TP53 and −710 C/T VEGFR1 polymorphisms in breast cancer: predisposition and survival. Mol Cell Biochem 2013; 379:181-90. [DOI: 10.1007/s11010-013-1640-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Accepted: 03/28/2013] [Indexed: 01/30/2023]
|
47
|
Wang S, Zhu J, Zhang R, Wang S, Gu Z. Association between microsomal epoxide hydrolase 1 T113C polymorphism and susceptibility to lung cancer. Tumour Biol 2013; 34:1045-52. [PMID: 23378225 DOI: 10.1007/s13277-012-0644-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Accepted: 12/27/2012] [Indexed: 11/30/2022] Open
Abstract
Previous case-control studies assessing the association between microsomal epoxide hydrolase 1 (EPHX1) T113C and susceptibility to lung cancer reported conflicting results. Thus, a systemic review and meta-analysis of published studies were performed to assess the possible association. PubMed and Embase databases were searched for all eligible studies. The strength of the association between EPHX1 T113C polymorphism and lung cancer risk was estimated by the pooled odds ratios (ORs) with its 95 % confidence interval. Twenty-four individual case-control studies involving a total of 4,970 lung cancer cases and 8,917 controls were finally included into the meta-analysis. When all 24 studies were included into the meta-analysis, the pooled results suggested that there was no association between EPHX1 T113C polymorphism and lung cancer risk under all four comparison models, and all P values for the pooled ORs were more than 0.05. In the subgroup analysis of Caucasians, the pooled results suggested that EPHX1 T113C polymorphism was associated with decreased risk of lung cancer under all four comparison models, and all P values for the pooled ORs were less than 0.05. However, in the subgroup analysis of Asians, the pooled results suggested that EPHX1 T113C polymorphism was associated with increased risk of lung cancer under three comparison models, and all P values for the pooled ORs were less than 0.05. There was no risk of publication bias. This current meta-analysis suggests that EPHX1 T113C polymorphism is associated with lung cancer risk, and there is an obvious race-specific effect in the association.
Collapse
Affiliation(s)
- Siwen Wang
- Department of Emergency, Fourth Affiliated Hospital of China Medical University, No. 102 Nan Qi Road, Heping District, Shenyang City, 110005, Liaoning Province, People's Republic of China.
| | | | | | | | | |
Collapse
|
48
|
Lung cancer risk in relation to nicotinic acetylcholine receptor, CYP2A6 and CYP1A1 genotypes in the Bangladeshi population. Clin Chim Acta 2013. [DOI: 10.1016/j.cca.2012.11.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
49
|
Santos SS, Koifman RJ, Ferreira RM, Diniz LF, Brennan P, Boffetta P, Koifman S. SULT1A1 genetic polymorphisms and the association between smoking and oral cancer in a case-control study in Brazil. Front Oncol 2012; 2:183. [PMID: 23264952 PMCID: PMC3524504 DOI: 10.3389/fonc.2012.00183] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 11/14/2012] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Oral cancer is a public health problem worldwide, being tobacco and alcohol consumption their main risk factors. Sulfotransferase (SULT) 1A1 (encoded by SULT1A1) is involved in procarcinogens metabolism, such as polycyclic aromatic hydrocarbons (PAHs) present in tobacco smoke. OBJECTIVE The aim of this study was to explore the magnitude of association between SULT1A1 gene Arg(213)His polymorphism and oral cancer, and to explore the interaction between such polymorphism and smoking. METHODS A hospital-based case-control study was carried out in Rio de Janeiro, Brazil, during 1999-2002. Epidemiological data and biological samples were obtained from 202 oral cancer patients and 196 sex and age-frequency matched controls without cancer antecedents. RESULTS No association was observed between Arg(213)His SULT1A1 polymorphism and oral cancer risk in overall analysis (OR = 1.06, 95% CI = 0.71-1.57). The magnitude of association between cigarette smoking and oral cancer was higher in individuals with a SULT1A1(*)1 isoform (wild type, genotype Arg/Arg) (OR = 10.19, 95% CI = 3.90-26.61) than in those with at least one SULT1A1(*)2 allele (genotypes Arg/His + His/His) (OR = 4.50, 95% CI =2.09-9.69). CONCLUSION Our results suggest that Arg(213)His SULT1A1 polymorphism may modulate the association between smoking and oral cancer. However, this association needs to be replicated in other studies: due to modest number of cases and controls, the role of chance in the observed association cannot be ruled out.
Collapse
|
50
|
Association of glutathione S-transferase P1 gene polymorphism with the histological types of lung cancer: a meta-analysis. Mol Biol Rep 2012. [PMID: 23184053 DOI: 10.1007/s11033-012-2324-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The conclusions of the published reports on the relationship between glutathione S-transferase P1 (GSTP1) A/G gene polymorphism and the histological types of lung cancer are still debated. GSTP1 is one of the important mutant sites reported at present. This meta-analysis was performed to evaluate the association between GSTP1 and histological types of lung cancer. The association investigations were identified from PubMed and Cochrane Library, and eligible studies were included and synthesized using meta-analysis method. Seventeen reports were included into this meta-analysis for the association of GSTP1 A/G gene polymorphism and histological types of lung cancer. The G allele and GG genotype were not associated with the susceptibility of risk of squamous cell carcinomas, adenocarcinomas, small cell carcinoma, non-small cell carcinoma or large cell carcinoma. However, in the sub-group analysis, there was an association between G allele/GG genotype with the risk of squamous cell carcinomas in East-Asians and GG genotype was associated with the risk of small cell carcinoma in Caucasians. In conclusion, GSTP1 A/G gene polymorphism is not associated with the susceptibility of squamous cell carcinomas, adenocarcinomas, small cell carcinoma, non-small cell carcinoma or large cell carcinoma.
Collapse
|