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Tahir M, Samankan S, Huang M, Pinto A. Endometrioid Squamous Proliferations of the Endometrium Express Alpha-Methylacyl-CoA Racemase (P504s). Int J Gynecol Pathol 2023; 42:576-581. [PMID: 37562065 DOI: 10.1097/pgp.0000000000000931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Squamous morular metaplasia is closely associated with endometrioid proliferative lesions such as endometrial intraepithelial neoplasia, whereas endometrioid adenocarcinoma may also demonstrate squamous differentiation (morular or nonmorular). Alpha-methylacyl-CoA racemase (AMACR; P504s) is an immunohistochemistry marker expressed in many tumors, including prostate adenocarcinoma, renal cell carcinoma, and in a subset of gynecologic carcinomas, predominantly of clear cell histology. In small biopsy samples, the distinction between cervical high-grade squamous intraepithelial lesions (HSILs) involving endocervical glands from endometrioid squamous proliferations can be challenging, given their anatomic vicinity and some degree of morphologic overlap. Following the observation of AMACR positivity by immunohistochemistry within squamous morules in an index case, 35 endometrial samples containing squamous morular metaplasia (25) and nonmorular squamous metaplasia (10), and 32 cases of cervical HSIL involving endocervical glands were stained with AMACR. The endometrial cohort consisted of 2 benign anovulatory endometrium, 7 endometrial polyps, 7 endometrial intraepithelial neoplasia, 4 atypical polypoid adenomyomas, and 15 endometrioid adenocarcinomas. Positive cases were scored as diffuse (≥50%) or focal (<50%). AMACR staining was present in 96.7% of endometrial squamous lesions, including 14 (93.3%) of endometrioid carcinomas, and in all cases of endometrial intraepithelial neoplasia, endometrial polyps, atypical polypoid adenomyomas, and anovulatory endometrium with squamous morular metaplasia or nonmorular squamous metaplasia. In comparison, only 2 cases (5.8%) of cervical HSIL demonstrated positivity for AMACR. In conclusion, AMACR can reliably differentiate the cervical versus endometrial origin of squamous lesions in small biopsy specimens.
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Clinical features and lipid metabolism genes as potential biomarkers in advanced lung cancer. BMC Cancer 2023; 23:36. [PMID: 36624406 PMCID: PMC9830782 DOI: 10.1186/s12885-023-10509-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Lung cancer is one of the most lethal tumors with a poor survival rate even in those patients receiving new therapies. Metabolism is considered one of the hallmarks in carcinogenesis and lipid metabolism is emerging as a significant contributor to tumor metabolic reprogramming. We previously described a profile of some lipid metabolism related genes with potential prognostic value in advanced lung cancer. AIM To analyze clinical and pathological characteristics related to a specific metabolic lipid genomic signature from patients with advanced lung cancer and to define differential outcome. METHODS Ninety samples from NSCLC (non-small cell lung cancer) and 61 from SCLC (small cell lung cancer) patients were obtained. We performed a survival analysis based on lipid metabolic genes expression and clinical characteristics. The primary end point of the study was the correlation between gene expression, clinical characteristics and survival. RESULTS Clinical variables associated with overall survival (OS) in NSCLC patients were clinical stage, adenocarcinoma histology, Eastern Cooperative Oncology Group (ECOG), number and site of metastasis, plasma albumin levels and first-line treatment with platinum. As for SCLC patients, clinical variables that impacted OS were ECOG, number of metastasis locations, second-line treatment administration and Diabetes Mellitus (DM). None of them was associated with gene expression, indicating that alterations in lipid metabolism are independent molecular variables providing complementary information of lung cancer patient outcome. CONCLUSIONS Specific clinical features as well as the expression of lipid metabolism-related genes might be potential biomarkers with differential outcomes.
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Zuo Z, Yu Y, Ren B, Liu S, Nelson J, Wang Z, Tao J, Pradhan‐Sundd T, Bhargava R, Michalopoulos G, Chen Q, Zhang J, Ma D, Pennathur A, Luketich J, Satdarshan Monga P, Nalesnik M, Luo J. Oncogenic Activity of Solute Carrier Family 45 Member 2 and Alpha-Methylacyl-Coenzyme A Racemase Gene Fusion Is Mediated by Mitogen-Activated Protein Kinase. Hepatol Commun 2022; 6:209-222. [PMID: 34505419 PMCID: PMC8710797 DOI: 10.1002/hep4.1724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 02/23/2021] [Accepted: 02/28/2021] [Indexed: 11/09/2022] Open
Abstract
Chromosome rearrangement is one of the hallmarks of human malignancies. Gene fusion is one of the consequences of chromosome rearrangements. In this report, we show that gene fusion between solute carrier family 45 member 2 (SLC45A2) and alpha-methylacyl-coenzyme A racemase (AMACR) occurs in eight different types of human malignancies, with frequencies ranging from 45% to 97%. The chimeric protein is translocated to the lysosomal membrane and activates the extracellular signal-regulated kinase signaling cascade. The fusion protein promotes cell growth, accelerates migration, resists serum starvation-induced cell death, and is essential for cancer growth in mouse xenograft cancer models. Introduction of SLC45A2-AMACR into the mouse liver using a sleeping beauty transposon system and somatic knockout of phosphatase and TENsin homolog (Pten) generated spontaneous liver cancers within a short period. Conclusion: The gene fusion between SLC45A2 and AMACR may be a driving event for human liver cancer development.
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Affiliation(s)
- Ze‐Hua Zuo
- Department of PathologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
| | - Yan‐Ping Yu
- Department of PathologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
- Pittsburgh Liver Research Center of University of Pittsburgh Medical CenterPittsburghPAUSA
| | - Bao‐Guo Ren
- Department of PathologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
| | - Silvia Liu
- Department of PathologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
- Pittsburgh Liver Research Center of University of Pittsburgh Medical CenterPittsburghPAUSA
| | - Joel Nelson
- Department of UrologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
| | - Zhou Wang
- Department of UrologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
| | - Junyan Tao
- Department of PathologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
| | | | - Rohit Bhargava
- Department of PathologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
| | - George Michalopoulos
- Department of PathologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
- Pittsburgh Liver Research Center of University of Pittsburgh Medical CenterPittsburghPAUSA
| | - Qi Chen
- Department of PharmacologyToxicology, and TherapeuticsUniversity of KansasKansas CityKSUSA
| | - Jun Zhang
- Department of MedicineUniversity of IowaIowa CityIAUSA
- Present address:
Department of MedicineUniversity of Kansas Medical CenterKansas CityKSUSA
| | - Deqin Ma
- Department of PathologyUniversity of IowaIowa CityIAUSA
| | - Arjun Pennathur
- Thoracic SurgeryUniversity of Pittsburgh School of MedicinePittsburghPAUSA
| | - James Luketich
- Thoracic SurgeryUniversity of Pittsburgh School of MedicinePittsburghPAUSA
| | - Paul Satdarshan Monga
- Department of PathologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
- Pittsburgh Liver Research Center of University of Pittsburgh Medical CenterPittsburghPAUSA
| | - Michael Nalesnik
- Department of PathologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
| | - Jian‐Hua Luo
- Department of PathologyUniversity of Pittsburgh School of MedicinePittsburghPAUSA
- Pittsburgh Liver Research Center of University of Pittsburgh Medical CenterPittsburghPAUSA
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Metabolic Health Together with a Lipid Genetic Risk Score Predicts Survival of Small Cell Lung Cancer Patients. Cancers (Basel) 2021; 13:cancers13051112. [PMID: 33807668 PMCID: PMC7961979 DOI: 10.3390/cancers13051112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/24/2021] [Accepted: 03/01/2021] [Indexed: 01/17/2023] Open
Abstract
Simple Summary Despite the progress in surgery and therapies, small cell lung cancer (SCLC) is still one of the most lethal types of cancer. The disease control remains heterogeneous and consequently, the ability to predict patient survival would be of great clinical value. Here, we propose for the first time, a metabolic precision approach for SCLC patients. We found that a healthy metabolic status contributes to increasing SCLC survival. Moreover, we discovered that two lipid metabolism-related genes, racemase and perilipin 1, and a genetic risk score of both genes, predict better SCLC survival. Our results show that a metabolic scenario characterized by metabolic health, lipid gene expression and environmental factors, is crucial for increase SCLC survival. Abstract Small cell lung cancer (SCLC) prognosis is the poorest of all types of lung cancer. Its clinical management remains heterogeneous and therefore, the capability to predict survival would be of great clinical value. Metabolic health (MH) status and lipid metabolism are two relevant factors in cancer prevention and prognosis. Nevertheless, their contributions in SCLC outcome have not yet been analyzed. We analyzed MH status and a transcriptomic panel of lipid metabolism genes in SCLC patients, and we developed a predictive genetic risk score (GRS). MH and two lipid metabolism genes, racemase and perilipin 1, are biomarkers of SCLC survival (HR = 1.99 (CI95%: 1.11–3.61) p = 0.02, HR = 0.36 (CI95%: 0.19–0.67), p = 0.03 and HR = 0.21 (CI95%: 0.09–0.47), respectively). Importantly, a lipid GRS of these genes predict better survival (c-index = 0.691). Finally, in a Cox multivariate regression model, MH, lipid GRS and smoking history are the main predictors of SCLC survival (c-index = 0.702). Our results indicate that the control of MH, lipid gene expression and environmental factors associated with lifestyle is crucial for increased SCLC survival. Here, we propose for the first time, a metabolic precision approach for SCLC patients.
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Yu YP, Tsung A, Liu S, Nalesnick M, Geller D, Michalopoulos G, Luo JH. Detection of fusion transcripts in the serum samples of patients with hepatocellular carcinoma. Oncotarget 2019. [DOI: 10.18632/oncotarget.26918] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Yan-Ping Yu
- Department of Pathology and Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Allan Tsung
- Department of Pathology and Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Current address: Department of Surgery, Ohio State University School of Medicine, Columbus, Ohio 43210, USA
| | - Silvia Liu
- Department of Pathology and Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Michael Nalesnick
- Department of Pathology and Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - David Geller
- Department of Pathology and Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - George Michalopoulos
- Department of Pathology and Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Jian-Hua Luo
- Department of Pathology and Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
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Kovaleva OV, Samoilova DV, Shitova MS, Oleinikova NA, Danilova NV, Malkov PG, Gratchev A. A Novel Monoclonal Antibody Against Alpha-Methylacyl-CoA Racemase Applicable for Paraffin-Embedded Tissues and Diagnostics of Prostate Cancer. Monoclon Antib Immunodiagn Immunother 2017; 36:30-34. [PMID: 28234557 DOI: 10.1089/mab.2016.0048] [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: 11/12/2022] Open
Abstract
AMACR (alpha-methylacyl-CoA racemase) has been recently described as a prostate cancer-specific gene that encodes a protein involved in the beta-oxidation of branched chain fatty acids. Expression of AMACR protein is found in prostatic adenocarcinoma, but not in benign prostatic tissue. Thus, monoclonal antibodies (mAbs) for AMACR detection are an important tool for the diagnosis of AMACR-positive cancers. However, only a few mAbs, especially those applicable for immunohistochemistry (IHC), have been established to date. In this study, we describe the generation of a new hybridoma clone G8 producing anti-AMACR antibodies. G8 mAb specifically binds human AMACR and was successfully used in immunoblotting and immunofluorescence on paraformaldehyde-fixed cells and in IHC of paraffin-embedded tumor specimens. These results indicate that this new anti-AMACR mAb G8 would be useful in the diagnosis of AMACR-related cancers and would be a strong tool in both basic and clinical research on AMACR.
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Affiliation(s)
- Olga V Kovaleva
- 1 Institute of Carcinogenesis , NN Blokhin Russian Cancer Research Center, Moscow, Russia
| | - Daria V Samoilova
- 1 Institute of Carcinogenesis , NN Blokhin Russian Cancer Research Center, Moscow, Russia
| | - Maria S Shitova
- 1 Institute of Carcinogenesis , NN Blokhin Russian Cancer Research Center, Moscow, Russia
| | | | | | | | - Alexei Gratchev
- 1 Institute of Carcinogenesis , NN Blokhin Russian Cancer Research Center, Moscow, Russia .,3 Medical Faculty Mannheim, Ruprecht-Karls University of Heidelberg , Mannheim, Germany
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Powell CA, Nasser MW, Zhao H, Wochna JC, Zhang X, Shapiro C, Shilo K, Ganju RK. Fatty acid binding protein 5 promotes metastatic potential of triple negative breast cancer cells through enhancing epidermal growth factor receptor stability. Oncotarget 2016; 6:6373-85. [PMID: 25779666 PMCID: PMC4467443 DOI: 10.18632/oncotarget.3442] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 01/12/2015] [Indexed: 12/31/2022] Open
Abstract
Fatty acid binding protein 5 (FABP5), an intracellular lipid binding protein, has been shown to play a role in various cancers, including breast cancer. However, FABP5 and its role in triple negative breast cancer (TNBC) have not been studied. We show FABP5 protein expression correlates with TNBC, high grade tumors, and worse disease-free survival in a tissue microarray containing 423 breast cancer patient samples. High FABP5 expression significantly correlates with epidermal growth factor receptor (EGFR) expression in these samples. Decreased tumor growth and lung metastasis were observed in FABP5-/- mice othotopically injected with murine breast cancer cells. FABP5 loss in TNBC tumor cells inhibited motility and invasion. Mechanistic studies revealed that FABP5 knockdown in TNBC cells results in decreased EGFR expression and FABP5 is important for EGF-induced metastatic signaling. Loss of FABP5 leads to proteasomal targeting of EGFR. Our studies show that FABP5 has a role in both host and tumor cell during breast cancer progression. These findings suggest that FABP5 mediates its enhanced effect on TNBC metastasis, in part, through EGFR, by inhibiting EGFR proteasomal degradation. These studies show, for the first time, a correlation between FABP5 and EGFR in enhancing TNBC metastasis through a novel mechanism.
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Affiliation(s)
| | - Mohd W Nasser
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - Helong Zhao
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - Jacob C Wochna
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - Xiaoli Zhang
- Center for Biostatistics, The Ohio State University, Columbus, OH, USA
| | - Charles Shapiro
- Tisch Cancer Institute, Mount Sinai School of Medicine, New York, USA
| | - Konstantin Shilo
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - Ramesh K Ganju
- Department of Pathology, The Ohio State University, Columbus, OH, USA
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AMACR amplification and overexpression in primary imatinib-naïve gastrointestinal stromal tumors: a driver of cell proliferation indicating adverse prognosis. Oncotarget 2015; 5:11588-603. [PMID: 25473890 PMCID: PMC4294386 DOI: 10.18632/oncotarget.2597] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 10/18/2014] [Indexed: 12/12/2022] Open
Abstract
Non-random gains of chromosome 5p have been observed in clinically aggressive gastrointestinal stromal tumors, whereas the driving oncogenes on 5p remain to be characterized. We used an integrative genomic and functional approach to identify amplified oncogenes on 5p and to evaluate the relevance of AMACR amplification at 5p13.3 and its overexpression in gastrointestinal stromal tumors. Thirty-seven tumor samples, imatinib-sensitive GIST882 cell line, and imatinib-resistant GIST48 cell line were analyzed for DNA imbalances using array-based genomic profiling. Forty-one fresh tumor samples of various risk categories were enriched for pure tumor cells by laser capture microdissection and quantified for AMACR mRNA expression. AMACR-specific fluorescence in situ hybridization and immunohistochemistry were both informative in tissue microarray sections of 350 independent primary gastrointestinal stromal tumors, including 213 cases with confirmed KIT /PDGFRA genotypes. To assess the oncogenic functions of AMACR, GIST882 and GIST48 cell lines were stably silenced against their endogenous AMACR expression. In 59% of cases featuring 5p gains, two major amplicons encompassed discontinuous chromosomal regions that were differentially overrepresented in high-risk cases, including the one harboring the mRNA-upregulated AMACR gene. Gene amplification was detected in 19.7% of cases (69/350) and strongly related to protein overexpression (p<0.001), although 52% of AMACR-overexpressing cases exhibited no amplification. Both gene amplification and protein overexpression were significantly associated with epithelioid histology, larger size, increased mitoses, higher risk levels, and unfavorable genotypes (all p≤0.03). They were also independently predictive of decreased disease-free survival (overexpression, p<0.001; amplification, p=0.020) in the multivariate analysis. Concomitant with downregulated cyclin D1, cyclin E, and CDK4, AMACR knockdown suppressed cell proliferation and induced G1-phase arrest, but did not affect apoptosis in both GIST882 and GIST48 cells. In conclusion, AMACR amplification is a mechanism driving increased mRNA and protein expression and conferring aggressiveness through heightened cell proliferation in gastrointestinal stromal tumors.
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Alpha-methylacyl-CoA racemase is expressed in a majority of pancreatic neoplasms of neuroendocrine, acinar, and solid pseudopapillary differentiation. Pathology 2015; 47:466-8. [PMID: 26126032 DOI: 10.1097/pat.0000000000000278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Luo JH, Liu S, Zuo ZH, Chen R, Tseng GC, Yu YP. Discovery and Classification of Fusion Transcripts in Prostate Cancer and Normal Prostate Tissue. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:1834-45. [PMID: 25963990 DOI: 10.1016/j.ajpath.2015.03.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/03/2015] [Accepted: 03/12/2015] [Indexed: 12/20/2022]
Abstract
Fusion transcript formation is one of the fundamental mechanisms that drives the development of prostate cancer. Because of the advance of high-throughput parallel sequencing, many fusion transcripts have been discovered. However, the discovery rate of fusion transcripts specific for prostate cancer is lagging behind the discoveries made on chromosome abnormalities of prostate cancer. Recent analyses suggest that many fusion transcripts are present in both benign and cancerous tissues. Some of these fusion transcripts likely represent important components of normal gene expression in cells. It is necessary to identify the criteria and features of fusion transcripts that are specific for cancer. In this review, we discuss optimization of RNA sequencing depth for fusion transcript discovery and the characteristics of fusion transcripts in normal prostate tissues and prostate cancer. We also propose a new classification of cancer-specific fusion transcripts on the basis of their tail gene fusion protein product and the roles that these fusions may play in cancer development.
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Affiliation(s)
- Jian-Hua Luo
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
| | - Silvia Liu
- Department of Biostatistics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Ze-Hua Zuo
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Rui Chen
- Department of Biostatistics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - George C Tseng
- Department of Biostatistics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Yan P Yu
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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11
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Nasser MW, Wani NA, Ahirwar DK, Powell CA, Ravi J, Elbaz M, Zhao H, Padilla L, Zhang X, Shilo K, Ostrowski M, Shapiro C, Carson WE, Ganju RK. RAGE mediates S100A7-induced breast cancer growth and metastasis by modulating the tumor microenvironment. Cancer Res 2015; 75:974-85. [PMID: 25572331 DOI: 10.1158/0008-5472.can-14-2161] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
RAGE is a multifunctional receptor implicated in diverse processes including inflammation and cancer. In this study, we report that RAGE expression is upregulated widely in aggressive triple-negative breast cancer (TNBC) cells, both in primary tumors and in lymph node metastases. In evaluating the functional contributions of RAGE in breast cancer, we found that RAGE-deficient mice displayed a reduced propensity for breast tumor growth. In an established model of lung metastasis, systemic blockade by injection of a RAGE neutralizing antibody inhibited metastasis development. Mechanistic investigations revealed that RAGE bound to the proinflammatory ligand S100A7 and mediated its ability to activate ERK, NF-κB, and cell migration. In an S100A7 transgenic mouse model of breast cancer (mS100a7a15 mice), administration of either RAGE neutralizing antibody or soluble RAGE was sufficient to inhibit tumor progression and metastasis. In this model, we found that RAGE/S100A7 conditioned the tumor microenvironment by driving the recruitment of MMP9-positive tumor-associated macrophages. Overall, our results highlight RAGE as a candidate biomarker for TNBCs, and they reveal a functional role for RAGE/S100A7 signaling in linking inflammation to aggressive breast cancer development.
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Affiliation(s)
- Mohd W Nasser
- Department of Pathology, The Ohio State Medical Center, Columbus, Ohio
| | - Nissar Ahmad Wani
- Department of Pathology, The Ohio State Medical Center, Columbus, Ohio
| | - Dinesh K Ahirwar
- Department of Pathology, The Ohio State Medical Center, Columbus, Ohio
| | | | - Janani Ravi
- Department of Pathology, The Ohio State Medical Center, Columbus, Ohio
| | - Mohamad Elbaz
- Department of Pathology, The Ohio State Medical Center, Columbus, Ohio
| | - Helong Zhao
- Department of Pathology, The Ohio State Medical Center, Columbus, Ohio
| | - Laura Padilla
- Biomed Division, LEITAT Technological Center, Barcelona, Spain
| | - Xiaoli Zhang
- Centre for Biostatics, The Ohio State Medical Center, Columbus, Ohio
| | - Konstantin Shilo
- Department of Pathology, The Ohio State Medical Center, Columbus, Ohio
| | - Michael Ostrowski
- Comprehensive Cancer Center, The Ohio State Medical Center, Columbus, Ohio
| | - Charles Shapiro
- Department of Pathology, The Ohio State Medical Center, Columbus, Ohio
| | - William E Carson
- Comprehensive Cancer Center, The Ohio State Medical Center, Columbus, Ohio. Department of Surgery, The Ohio State Medical Center, Columbus, Ohio
| | - Ramesh K Ganju
- Department of Pathology, The Ohio State Medical Center, Columbus, Ohio.
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Li CF, Fang FM, Lan J, Wang JW, Kung HJ, Chen LT, Chen TJ, Li SH, Wang YH, Tai HC, Yu SC, Huang HY. AMACR amplification in myxofibrosarcomas: a mechanism of overexpression that promotes cell proliferation with therapeutic relevance. Clin Cancer Res 2014; 20:6141-52. [PMID: 25384383 DOI: 10.1158/1078-0432.ccr-14-1182] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Myxofibrosarcomas frequently display arm-level gains on 5p. We characterized the pathogenetic and therapeutic relevance of the α-methylacyl coenzyme A racemase (AMACR) at 5p13.3. EXPERIMENTAL DESIGN AMACR mRNA expression in myxofibrosarcomas was analyzed using the public transcriptome and laser-microdissected sarcoma cells. We performed florescence in situ hybridization (FISH) and immunohistochemistry in independent samples for clinical correlates. In AMACR-overexpressing myxofibrosarcoma cells and xenografts, we elucidated the biologic function of AMACR using RNA interference and explored the therapeutic effect and mechanism of an AMACR inhibitor, ebselen oxide. RESULTS AMACR protein overexpression and gene amplification were significantly associated with each other (P < 0.001), with higher tumor grades (both P ≤ 0.002), and univariately with worse metastasis-free survival (MFS; both P < 0.0001) and disease-specific survival (DSS; P = 0.0002 for overexpression; P = 0.0062 for amplification). AMACR protein overexpression also independently portended adverse outcome (DSS, P = 0.007; MFS, P = 0.001). However, 39% of AMACR-overexpression cases did not show gene amplification, implying alternative regulatory mechanisms. In myxofibrosarcoma cell lines, stable AMACR knockdown suppressed cell proliferation, anchorage-independent growth, and expression of cyclin D1 and cyclin T2. These growth-promoting attributes of AMACR were corroborated in the AMACR-silenced xenograft model and AMACR-underexpressed myxofibrosarcomas, showing decreased labeling for cyclin D1, cyclin T2, and Ki-67. Compared with fibroblasts, AMACR-expressing myxofibrosarcoma cells were more susceptible to ebselen oxide, which not only decreased viable cells, promoted proteasome-mediated degradation of AMACR protein, and induced cellular apoptosis in vitro, but also dose-dependently suppressed xenografted tumor growth in vivo. CONCLUSIONS Overexpressed AMACR in myxofibrosarcomas can be amplification-driven, associated with tumor aggressiveness, and may be relevant as a druggable target.
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Affiliation(s)
- Chien-Feng Li
- Department of Pathology, Chi-Mei Medical Center, Tainan, Taiwan. Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan. Department of Biotechnology, Southern Taiwan University, Tainan, Taiwan
| | - Fu-Min Fang
- Department of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Jui Lan
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Jun-Wen Wang
- Department of Orthopedic Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsing-Jien Kung
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Tainan, Taiwan
| | - Li-Tzong Chen
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
| | - Tzu-Ju Chen
- Department of Pathology, Chi-Mei Medical Center, Tainan, Taiwan
| | - Shau-Hsuan Li
- Division of Oncology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yu-Hui Wang
- Institute of Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan
| | - Hui-Chun Tai
- Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan
| | - Shih-Chen Yu
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsuan-Ying Huang
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
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Shilo K, Wu X, Sharma S, Welliver M, Duan W, Villalona-Calero M, Fukuoka J, Sif S, Baiocchi R, Hitchcock CL, Zhao W, Otterson GA. Cellular localization of protein arginine methyltransferase-5 correlates with grade of lung tumors. Diagn Pathol 2013; 8:201. [PMID: 24326178 PMCID: PMC3933389 DOI: 10.1186/1746-1596-8-201] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 12/03/2013] [Indexed: 12/19/2022] Open
Abstract
Background Protein arginine methyltransferase-5 (PRMT5) is a chromatin-modifying enzyme capable of methylating histone and non-histone proteins, and is involved in a wide range of cellular processes that range from transcriptional regulation to organelle biosynthesis. As such, its overexpression has been linked to tumor suppressor gene silencing, enhanced tumor cell growth and survival. Material and methods Quantitative real-time polymerase chain reaction, Western immunoblot and immunohistochemistry were used to characterize PRMT5 expression in lung cancer cell lines and human tumors. Clinicopathological findings of tissue microarray based samples from 229 patients with non-small cell lung carcinomas (NSCLC) and 133 cases with pulmonary neuroendocrine tumors (NET) were analyzed with regard to nuclear and cytoplasmic PRMT5 expression. Results There was statistically significant difference in PRMT5 messenger RNA expression between tumors and nonneoplastic lung tissues. Immunoblot experiments showed abundant expression of PRMT5 and its symmetric methylation mark H4R3 in lung carcinoma but not in non-neoplastic human pulmonary alveolar and bronchial epithelial cell lines. More than two thirds of lung tumors expressed PRMT5. High levels of cytoplasmic PRMT5 were detected in 20.5% of NSCLC and in 16.5% of NET; high levels of nuclear PRMT5 were detected in 38.0% of NSCLC and 24.0% of NET. Cytoplasmic PRMT5 was associated with high grade in both NSCLC and pulmonary NET while nuclear PRMT5 was more frequent in carcinoid tumors (p < 0.05). Conclusion The observed findings support the role of PRMT5 in lung tumorigenesis and reflect its functional dichotomy in cellular compartments. Virtual slide The virtual slides for this article can be found here:
http://www.diagnosticpathology.diagnomx.eu/vs/1611895162102528
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Affiliation(s)
- Konstantin Shilo
- Department of Pathology, The Wexner Medical Center at the Ohio State University, 410 W, 10th Avenue, Columbus, OH, 43210, USA.
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Fadare O, Parkash V, Gwin K, Hanley KZ, Jarboe EA, Liang SX, Quick CM, Zheng W, Rawish KR, Hecht JL, Desouki MM. Utility of α-methylacyl-coenzyme-A racemase (p504s) immunohistochemistry in distinguishing endometrial clear cell carcinomas from serous and endometrioid carcinomas. Hum Pathol 2013; 44:2814-21. [PMID: 24119561 DOI: 10.1016/j.humpath.2013.07.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 07/25/2013] [Accepted: 07/26/2013] [Indexed: 10/26/2022]
Abstract
The expression of α-methylacyl-coenzyme-A racemase (AMACR) has previously been reported in 75% to 100% of urethral/bladder clear cell carcinomas, tumors that are known to display broad phenotypic overlap with their identically named müllerian counterparts. Herein, we assess the utility of AMACR in distinguishing endometrial clear cell carcinomas (CCCs) from endometrial serous carcinomas (ESCs) and endometrial endometrioid carcinomas (EECs). A total of 111 endometrial carcinomas in a tissue microarray, including 49 CCCs, 13 ESCs, and 49 EECs, were assessed for AMACR immunoreactivity, with results scored semiquantitatively (scores 0, 1+, 2+, 3+ for 0%, 1%-5%, 6%-50%, >50% immunoreactive cells, respectively). Fifty (45%) of the 111 carcinomas were AMACR positive, with the following score distribution: CCC: 0 (n = 12), 1+ (n = 12), 2+ (n = 3), 3+ (n = 22); EEC: 0 (n = 38), 1+ (n = 4), 2+ (n = 4), 3+ (n = 3); ESC: 0 (n = 11), 1+ (n = 1), 2+ (n = 0), 3+ (n = 1). AMACR expression was significantly more frequent in CCC (75%) than in ESC (15%) or EEC (22%); P < .0001. The sensitivity and specificity of AMACR expression in classifying a carcinoma as CCC were 0.75 (95% confidence interval [CI], 0.61-0.86) and 0.79 (95% CI, 0.66-0.88), respectively, with an odds ratio of 11.62 (95% CI, 5-28; P < .001) and an area under the curve of 0.79 (95% CI, 0.68-0.88). These findings indicate that AMACR expression is strongly associated with CCC and displays a relatively robust diagnostic test performance. However, its practical utility may be limited by the focal nature of its expression in 32% of the AMACR-positive CCC cases as well as its expression in 15% to 22% of the non-CCC histotypes.
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Affiliation(s)
- Oluwole Fadare
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Obstetrics and Gynecology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.
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Alpha-methylacyl-coenzyme A racemase expression in neuroendocrine neoplasms of the stomach. Virchows Arch 2012; 461:169-75. [PMID: 22782380 PMCID: PMC3421105 DOI: 10.1007/s00428-012-1272-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 05/25/2012] [Accepted: 06/20/2012] [Indexed: 10/28/2022]
Abstract
The enzyme alpha-methylacyl-coenzyme A racemase plays an important role in the beta-oxidation of branched-chain fatty acid and its derivatives. It has been used to detect prostatic adenocarcinoma and high-grade intraepithelial neoplasia, and recently also as a marker for other neoplasms, including those of the genitourinary system, breast, upper and lower gastrointestinal tract and their precursor lesions. We assessed expression of alpha-methylacyl-coenzyme A racemase by immunohistochemistry in neuroendocrine tumours of the stomach to determine differences in the incidence and pattern of expression among different types of gastric neuroendocrine tumours. While none of the grade 1 neuroendocrine tumours were immunoreactive, 67 % of grade 2 neuroendocrine tumours and 90 % of neuroendocrine carcinomas were positive for alpha-methylacyl-coenzyme A racemase. Furthermore, an adenocarcinoma component was found in 72.5 % (37 of 51) of neuroendocrine carcinomas, whereas none of the grade 1 and 2 neuroendocrine tumours contained an adenocarcinoma component. In 83 % of neuroendocrine carcinomas, the adenocarcinoma component was positive for alpha-methylacyl-coenzyme A racemase, and both adenocarcinoma and neuroendocrine carcinoma components stained positively in 78 % of these cases. Our results indicate that alpha-methylacyl-coenzyme A racemase is a useful marker for distinguishing between grade 1 (negative) and grade 2 neuroendocrine tumours, and neuroendocrine carcinoma of the stomach (frequently positive). Different patterns of alpha-methylacyl-coenzyme A racemase expression between gastric neuroendocrine tumours and neuroendocrine carcinoma suggest that these might develop via different tumourigenic pathways.
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Morgenroth A, Urusova EA, Dinger C, Al-Momani E, Kull T, Glatting G, Frauendorf H, Jahn O, Mottaghy FM, Reske SN, Zlatopolskiy BD. New Molecular Markers for Prostate Tumor Imaging: A Study on 2-Methylene Substituted Fatty Acids as New AMACR Inhibitors. Chemistry 2011; 17:10144-50. [DOI: 10.1002/chem.201003176] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Revised: 05/09/2011] [Indexed: 11/10/2022]
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Ouyang B, Leung YK, Wang V, Chung E, Levin L, Bracken B, Cheng L, Ho SM. α-Methylacyl-CoA racemase spliced variants and their expression in normal and malignant prostate tissues. Urology 2011; 77:249.e1-7. [PMID: 21195844 DOI: 10.1016/j.urology.2010.08.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 07/21/2010] [Accepted: 08/02/2010] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To evaluate the possibility of using α-methylacyl-CoA racemase (AMACR) variants to improve the specificity of prostate cancer (CaP) detection. AMACR has been used as a diagnostic biomarker for CaP and is now a standard biomarker for needle biopsy specimens with ambiguous lesions. METHODS We used in silico analysis and molecular cloning to discover new AMACR variants and quantitative reverse transcription-polymerase chain reaction (RT-PCR) to measure the transcript levels of AMACR and its variants in 4 prostate cell lines and in 23 pairs of CaP and adjacent normal tissue. RESULTS We found 4 novel variants, IAs, IBL, IBLd, and IBLi. Transcript levels of most AMACR variants were significantly upregulated in CaP compared with its adjacent normal counterparts. A variants, the functional variants based on bioinformatic analysis, showed levels of transcript expression in CaP in this order: IA≫IAd=IIA≫IIAs>IAs. In contrast, the expression of the B variants, which appear to be nonfunctional due to the absence of exon 3, was lower than that of the A variants. IB was the most abundant form of B variant; and expression of IIB was negligible. More important, the difference between levels of variant IA, IAd, IIA, IIAs, IB, and IBLi in CaP and normal tissue was significantly higher than the difference in levels of total AMACR. CONCLUSIONS Our data suggest that AMACR variants have better power than total AMACR in discriminating between CaP and adjacent normal tissue. These findings may be useful for the development of future diagnostic assays.
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Affiliation(s)
- Bin Ouyang
- Department of Environmental Health, University of Cincinnati Medical Center, Cincinnati, Ohio 45267, USA
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Cakir M, Grossman A. The molecular pathogenesis and management of bronchial carcinoids. Expert Opin Ther Targets 2011; 15:457-91. [DOI: 10.1517/14728222.2011.555403] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Berretta R, Moscato P. Cancer biomarker discovery: the entropic hallmark. PLoS One 2010; 5:e12262. [PMID: 20805891 PMCID: PMC2923618 DOI: 10.1371/journal.pone.0012262] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2009] [Accepted: 06/26/2010] [Indexed: 12/29/2022] Open
Abstract
Background It is a commonly accepted belief that cancer cells modify their transcriptional state during the progression of the disease. We propose that the progression of cancer cells towards malignant phenotypes can be efficiently tracked using high-throughput technologies that follow the gradual changes observed in the gene expression profiles by employing Shannon's mathematical theory of communication. Methods based on Information Theory can then quantify the divergence of cancer cells' transcriptional profiles from those of normally appearing cells of the originating tissues. The relevance of the proposed methods can be evaluated using microarray datasets available in the public domain but the method is in principle applicable to other high-throughput methods. Methodology/Principal Findings Using melanoma and prostate cancer datasets we illustrate how it is possible to employ Shannon Entropy and the Jensen-Shannon divergence to trace the transcriptional changes progression of the disease. We establish how the variations of these two measures correlate with established biomarkers of cancer progression. The Information Theory measures allow us to identify novel biomarkers for both progressive and relatively more sudden transcriptional changes leading to malignant phenotypes. At the same time, the methodology was able to validate a large number of genes and processes that seem to be implicated in the progression of melanoma and prostate cancer. Conclusions/Significance We thus present a quantitative guiding rule, a new unifying hallmark of cancer: the cancer cell's transcriptome changes lead to measurable observed transitions of Normalized Shannon Entropy values (as measured by high-througput technologies). At the same time, tumor cells increment their divergence from the normal tissue profile increasing their disorder via creation of states that we might not directly measure. This unifying hallmark allows, via the the Jensen-Shannon divergence, to identify the arrow of time of the processes from the gene expression profiles, and helps to map the phenotypical and molecular hallmarks of specific cancer subtypes. The deep mathematical basis of the approach allows us to suggest that this principle is, hopefully, of general applicability for other diseases.
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Affiliation(s)
- Regina Berretta
- Centre for Bioinformatics, Biomarker Discovery and Information-Based Medicine, The University of Newcastle, Callaghan, New South Wales, Australia
- Information Based Medicine Program, Hunter Medical Research Institute, John Hunter Hospital, New Lambton Heights, New South Wales, Australia
| | - Pablo Moscato
- Centre for Bioinformatics, Biomarker Discovery and Information-Based Medicine, The University of Newcastle, Callaghan, New South Wales, Australia
- Information Based Medicine Program, Hunter Medical Research Institute, John Hunter Hospital, New Lambton Heights, New South Wales, Australia
- Australian Research Council Centre of Excellence in Bioinformatics, Callaghan, New South Wales, Australia
- * E-mail:
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Chromosome 5p Region SNPs Are Associated with Risk of NSCLC among Women. J Cancer Epidemiol 2010; 2009:242151. [PMID: 20445798 PMCID: PMC2861408 DOI: 10.1155/2009/242151] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Accepted: 12/14/2009] [Indexed: 11/17/2022] Open
Abstract
In a population-based case-control study, we explored the associations between 42 polymorphisms in seven genes in this region and non-small cell lung cancer (NSCLC) risk among Caucasian (364 cases; 380 controls) and African American (95 cases; 103 controls) women. Two TERT region SNPs, rs2075786 and rs2853677, conferred an increased risk of developing NSCLC, especially among African American women, and TERT-rs2735940 was associated with a decreased risk of lung cancer among African Americans. Five of the 20 GHR polymorphisms and SEPP1-rs6413428 were associated with a marginally increased risk of NSCLC among Caucasians. Random forest analysis reinforced the importance of GHR among Caucasians and identified AMACR, TERT, and GHR among African Americans, which were also significant using gene-based risk scores. Smoking-SNP interactions were explored, and haplotypes in TERT and GHR associated with NSCLC risk were identified. The roles of TERT, GHR, AMACR and SEPP1 genes in lung carcinogenesis warrant further exploration.
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