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  • 1
    In: Molecular Carcinogenesis, Wiley, Vol. 52, No. S1 ( 2013-11), p. 139-147
    Abstract: Nonalcoholic fatty liver disease (NAFLD) is an emerging epidemic with high prevalence in Western countries. Genome‐wide association studies had reported that a variation in the patatin‐like phospholipase domain containing 3 ( PNPLA3 ) gene is associated with high susceptibility to NAFLD. However, the relationship between this variation and hepatocellular carcinoma (HCC) has not been well established. We investigated the impact of PNPLA3 genetic variation (rs738409: C 〉 G) on HCC risk and prognosis in the United States by conducting a case−control study that included 257 newly diagnosed and pathologically confirmed Caucasian patients with HCC (cases) and 494 healthy controls. Multivariate logistics and Cox regression models were used to control for the confounding effects of HCC risk and prognostic factors. We observed higher risk of HCC for subjects with a homozygous GG genotype than for those with CC or CG genotypes, the adjusted odds ratio (OR) was 3.21 (95% confidence interval [CI], 1.68–6.41). We observed risk modification among individuals with diabetes mellitus (OR = 19.11; 95% CI, 5.13–71.20). The PNPLA3 GG genotype was significantly associated with underlying cirrhosis in HCC patients (OR = 2.48; 95% CI, 1.05–5.87). Moreover, GG allele represents an independent risk factor for death. The adjusted hazard ratio of the GG genotype was 2.11 (95% CI, 1.26–3.52) compared with CC and CG genotypes. PNPLA3 genetic variation (rs738409: C 〉 G) may determine individual susceptibility to HCC development and poor prognosis. Further experimental investigations are necessary for thorough assessment of the hepatocarcinogenic role of PNPLA3 . © 2013 Wiley Periodicals, Inc.
    Type of Medium: Online Resource
    ISSN: 0899-1987 , 1098-2744
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2013
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  • 2
    In: Hepatology, Ovid Technologies (Wolters Kluwer Health), Vol. 49, No. 5 ( 2009-05), p. 1563-1570
    Type of Medium: Online Resource
    ISSN: 0270-9139
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2009
    detail.hit.zdb_id: 1472120-X
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  • 3
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2008
    In:  Journal of Clinical Oncology Vol. 26, No. 28 ( 2008-10-01), p. 4557-4562
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 26, No. 28 ( 2008-10-01), p. 4557-4562
    Abstract: Hepatitis B virus (HBV) and hepatitis C virus (HCV) are considered to be hepatotropic and are a major cause of hepatocellular carcinoma. However, little is known about the role of HBV and HCV infection in other malignancies. This study aimed to determine whether HBV and HCV infections increase the risk for pancreatic cancer development. Patients and Methods At The University of Texas M. D. Anderson Cancer Center, Houston, TX, we recruited 476 patients with pathologically confirmed adenocarcinoma of the pancreas and 879 age-, sex-, and race-matched healthy controls. Blood samples were tested for the presence of HCV antibodies (anti-HCV), HBV surface antigen (HBsAg), antibodies against HBV core antigen (anti-HBc), and antibodies against HBsAg (anti-HBs). The positive samples were retested by two confirmatory tests. An unconditional multivariable logistic regression analysis was used to estimate adjusted odds ratios (AORs). Results Anti-HCV was positive in seven cases (1.5%) and nine controls (1%). Anti-HBc was positive in 36 cases (7.6%) and 28 controls (3.2%). The estimated AORs and 95% CIs were as follows: anti-HCV–positive, 0.9 (95% CI, 0.3 to 2.8), anti-HBc–positive, 2.5 (95% CI, 1.5 to 4.2), anti-HBc–positive/anti-HBs–positive, 2.3 (95% CI, 1.2 to 4.2), and anti-HBc–positive/anti-HBs–negative, 4 (95% CI, 1.4 to 11.1). Risk modification by past exposure to HBV was observed among diabetics (AOR, 7.1; 95% CI, 1.7 to 28.7). Conclusion Past exposure to HBV may be associated with pancreatic cancer development. Should such findings be confirmed by other studies, it may offer important insights into the etiology of pancreatic cancer and may suggest the need to consider prevention of HBV reactivation among patients with HBV-related pancreatic cancer during chemotherapy.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2008
    detail.hit.zdb_id: 2005181-5
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  • 4
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2013
    In:  Journal of Clinical Oncology Vol. 31, No. 4_suppl ( 2013-02-01), p. 141-141
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 31, No. 4_suppl ( 2013-02-01), p. 141-141
    Abstract: 141 Background: Similar to primary liver cancer, obesity, diabetes mellitus and hepatitis B virus infection have been associated with increased risk of pancreatic cancer (PC) development. A genome-wide association study has reported that a polymorphic variant of the patatin-like phospholipase domain containing 3 (PNPLA3) gene was associated with a higher susceptibility to fatty liver and liver cancer. The relationship between this variation and PC has not been previously examined. We investigated the correlation in the degree of organ damage between the liver and the pancreas in patients with PC. In addition, we examined the effect of PNPLA3genetic variation (rs738409: C 〉 G) on PC development. Methods: Using resources of our case-control study in MD Anderson Cancer Center, we analyzed 544 pathologically confirmed PC patients and 498 healthy controls. Cases and controls were frequency matched by age, gender, and race. Multivariate logistic regression analysis was performed to adjust for the confounding factors. Medical records of PC patients were reviewed for pancreatic and liver fatty changes. Results: We found that 18.8% of PC patients had evidence of pancreatic steatosis, fibrosis, or pancreatitis. Fatty liver was observed in 14.5% of PC patients which was frequently detected in patients with pancreatitis (p=0.002). A significant correlation between pancreatitis and cirrhosis was observed in PC patients with a prior history of obesity but not in patients without a history of obesity (p=0.001). On the other hand, we observed no significant association between PNPLA3 genotype and risk of PC. The adjusted odds ratio (OR) was 1.4 (95% confidence interval [CI], 0.7-2.7) for the homozygous variant GG genotype compared with the CC/CG genotypes. Conclusions: We concluded that despite the similarities between the liver and the pancreas, genetic susceptibility to fatty infiltration and its effect on cancer development may differ between the two organs. Evaluation and assessment of nonalcoholic fatty pancreatic disease (NAFPD) in PC patients and genetic susceptibility of NAFPD may be warranted in future research.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2013
    detail.hit.zdb_id: 2005181-5
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  • 5
    Online Resource
    Online Resource
    American Association for Cancer Research (AACR) ; 2006
    In:  Cancer Research Vol. 66, No. 6 ( 2006-03-15), p. 3323-3330
    In: Cancer Research, American Association for Cancer Research (AACR), Vol. 66, No. 6 ( 2006-03-15), p. 3323-3330
    Abstract: Genetic variation in DNA repair may affect the clinical response to cytotoxic therapies. We investigated the effect of six single nucleotide polymorphisms of the RecQ1, RAD54L, XRCC2, and XRCC3 genes on overall survival of 378 patients with pancreatic adenocarcinoma who were treated at University of Texas M.D. Anderson Cancer Center during February 1999 to October 2004 and were followed up to October 2005. Genotypes were determined using the MassCode method. Survival was determined from pathologic diagnosis to death. Patients who were alive at the last follow-up evaluation were censored at that time. Kaplan-Meier plot, log-rank test, and Cox regression were used to compare overall survival by genotypes. A significant effect on survival of all patients was observed for RecQ1 and RAD54L genes. The median survival time was 19.2, 14.7, and 13.2 months for the RecQ1 159 AA, AC, and CC genotypes, and 16.4, 13.3, and 10.3 months for RAD54L 157 CC, CT, and TT genotypes, respectively. A significantly reduced survival was associated with the variant alleles of XRCC2 R188H and XRCC3 A17893G in subgroup analysis. When the four genes were analyzed in combination, an increasing number of adverse alleles were associated with a significantly decreased survival. Subgroup analyses have shown that the genotype effect on survival was present among patients without metastatic disease or among patients who receive radiotherapy. These observations suggest that polymorphisms of genes involved in the repair of DNA double-strand breaks significantly affect the clinical outcome of patients with pancreatic cancer. (Cancer Res 2006; 66(6): 3323-30)
    Type of Medium: Online Resource
    ISSN: 0008-5472 , 1538-7445
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    Language: English
    Publisher: American Association for Cancer Research (AACR)
    Publication Date: 2006
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    detail.hit.zdb_id: 1432-1
    detail.hit.zdb_id: 410466-3
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  • 6
    Online Resource
    Online Resource
    American Association for Cancer Research (AACR) ; 2005
    In:  Cancer Epidemiology, Biomarkers & Prevention Vol. 14, No. 6 ( 2005-06-01), p. 1470-1476
    In: Cancer Epidemiology, Biomarkers & Prevention, American Association for Cancer Research (AACR), Vol. 14, No. 6 ( 2005-06-01), p. 1470-1476
    Abstract: To test the hypothesis that 5,10-methylenetetrahydrofolate reductase (MTHFR) polymorphisms modify the risk of pancreatic cancer, we conducted a hospital-based, case-control study involving 347 patients with newly diagnosed pancreatic adenocarcinoma and 348 healthy controls, frequency matched by age, sex, and race. MTHFR polymorphisms were determined using the PCR-RFLP method. Association of these polymorphisms with the risk of pancreatic cancer was estimated by unconditional logistic regression analysis. We found that the C667T (but not the A1298C) polymorphism had a significant main effect on the risk of pancreatic cancer. The frequencies of the MTHFR 667CC, 667CT, and 667TT genotypes were 49.5%, 38.6%, and 11.9%, respectively, among cases compared with 48.5%, 45.0%, and 6.5%, respectively, among controls. Individuals with the 667TT genotype displayed a 2-fold increased risk for pancreatic cancer compared with those with the CC/CT genotypes [adjusted odds ratio (OR), 2.14; 95% confidence interval (95% CI), 1.14-4.01]. Multivariate analyses found that the effect of the 677TT genotype on the risk of pancreatic cancer was present among ever smokers (OR, 5.53; 95% CI, 2.0-15.3) and ever alcohol drinkers (OR, 3.16; 95% CI, 1.30-7.69) but not in never smokers (OR, 0.82; 95% CI, 0.33-2.06) and never drinkers (OR, 1.42; 95% CI, 0.56-3.62). Furthermore, a positive interaction between the MTHFR TT genotype and heavy smoking or heavy alcohol consumption was detected. The OR (95% CI) of pancreatic cancer was 6.83 (1.91-24.38) for heavy smokers among the TT carriers compared with never smokers with the CC/CT genotypes and 4.23 (0.88-20.3) for heavy drinkers with the TT genotype compared with nondrinkers with the CC/CT genotypes. These observations support a role for folate metabolism in pancreatic cancer, especially among smokers and heavy drinkers.
    Type of Medium: Online Resource
    ISSN: 1055-9965 , 1538-7755
    Language: English
    Publisher: American Association for Cancer Research (AACR)
    Publication Date: 2005
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  • 7
    Online Resource
    Online Resource
    American Association for Cancer Research (AACR) ; 2011
    In:  Cancer Research Vol. 71, No. 8_Supplement ( 2011-04-15), p. 3750-3750
    In: Cancer Research, American Association for Cancer Research (AACR), Vol. 71, No. 8_Supplement ( 2011-04-15), p. 3750-3750
    Abstract: Background: There is accumulating evidence that obesity and diabetes are modifiable risk factors for pancreatic cancer. However, the genetic factors predispose individuals with obesity or diabetes to pancreatic cancer has not been identified. Aims: To investigate the hypothesis that obesity- and diabetes-related genes modify the risk of pancreatic cancer. Methods: We genotyped 15 single nucleotide polymorphisms (SNPs) of the fat mass and obesity associated (FTO), peroxisome proliferators-activated receptor gamma (PPARγ), nuclear receptor family 5 member 2 NR5A2 (aka liver receptor homolog 1), AMP-activated protein kinase (AMPK), and adiponectin (ADIPOQ) gene in 1,070 patients with pancreatic cancer and 1,175 cancer-free controls that are enrolled in a case control study conducted at MD Anderson Cancer Center during 2000-2008. Information on risk factors was collected by personal interview. Genotypes were determined using the Taqman method. Adjusted odds ratios (AORs) and 95% confidence intervals (CIs) were calculated using multivariable unconditional logistic regression. Results: The PPARγ P12A (rs1801282) GG genotype was inversely associated with risk of pancreatic cancer (AOR: 0.21, 95%CI: 0.07−0.62). Three NR5A2 variants (rs12029406, rs3790844 and rs3790843) that were previously identified in a genome-wide association study were significantly associated with reduced risk of pancreatic cancer, AORs ranging 0.57-0.79. Two FTO gene variants (rs8050136 and rs9939609) and one ADIPOQ variant (rs17366743) were differentially associated with pancreatic cancer according to levels of body mass index (BMI) (P interaction = 0.0001, 0.0015, and 0.03). The variant alleles were associated reduced risk of pancreatic cancer among individuals with normal weight but increased risk among those with excess body weight. For example, the AOR (95%CI) for FTO IVS1-2777 AC/AA genotype (rs8050136) was 0.72 (0.55-0.96) and 1.54 (1.14-2.09) in participants with a BMI & lt;25 or ≥ 25 kg/m2, respectively. We observed no significant association between AMPK genotype and pancreatic cancer and no genotype interactions with diabetes or smoking. Conclusion: Our findings suggest a protective effect of PPARγ P12A GG genotype and NR5A2 variants on pancreatic cancer. A positive association of FTO and ADIPOQ gene variants with pancreatic cancer may be limited to persons who are overweight. Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 3750. doi:10.1158/1538-7445.AM2011-3750
    Type of Medium: Online Resource
    ISSN: 0008-5472 , 1538-7445
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    Language: English
    Publisher: American Association for Cancer Research (AACR)
    Publication Date: 2011
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    detail.hit.zdb_id: 1432-1
    detail.hit.zdb_id: 410466-3
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  • 8
    In: Oncology, S. Karger AG, Vol. 80, No. 5-6 ( 2011), p. 373-381
    Abstract: 〈 i 〉 Objective: 〈 /i 〉 Improving the prognostic stratification of unresectable hepatocellular carcinoma (HCC) patients is critically needed. Since patients’ survival is closely linked to the severity of the underlying liver disease, and insulin-like growth factor-1 (IGF-1) is produced predominantly in the liver, we hypothesized that IGF-1 may correlate with patients’ survival and hence improve the prognostic ability of the Cancer of the Liver Italian Program (CLIP) score. 〈 i 〉 Methods: 〈 /i 〉 Baseline plasma IGF-1 and clinicopathologic parameters were available from 288 patients. Multivariate Cox regression models, Kaplan-Meier curves, and the log-rank test were applied. Recursive partitioning was used to determine the optimal cut point for IGF-1 using training/validation samples. Prognostic ability of the I-CLIP (I = IGF) was compared to CLIP using C-index. 〈 i 〉 Results: 〈 /i 〉 IGF-1 significantly correlated with the clinicopathologic features. With an optimal IGF-1 cut point of 26 ng/ml, the overall survival of patients with IGF-1 〉 26 was 17.7 months (95% CI 13.6–22.8), and with IGF-1 ≤26 was 5.8 months (95% CI 4.0–12.5), p 〈 0.0001. The concordance probabilities for CLIP and I-CLIP were 0.7037 and 0.7096, respectively (p 〈 0.0001). 〈 i 〉 Conclusions: 〈 /i 〉 Our preliminary results indicate that I-CLIP significantly improved prognostic stratification of patients with advanced HCC. However, independent validation of our study is warranted.
    Type of Medium: Online Resource
    ISSN: 0030-2414 , 1423-0232
    RVK:
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2011
    detail.hit.zdb_id: 1483096-6
    detail.hit.zdb_id: 250101-6
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  • 9
    In: Oncology, S. Karger AG, Vol. 86, No. 2 ( 2014), p. 63-71
    Abstract: 〈 b 〉 〈 i 〉 Objective: 〈 /i 〉 〈 /b 〉 Hepatocellular carcinoma (HCC) staging systems were developed using data predominantly from patients who had hepatitis and cirrhosis. Given the recent change in prevalence of viral hepatitis and cirrhosis at oncology centers, which has altered the natural history of HCC, we aimed at comparing the accuracy of HCC staging systems in patients with or without hepatitis and cirrhosis. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 A total of 438 patients were enrolled. Baseline clinicopathologic parameters, Barcelona Clinic Liver Cancer stage, Cancer of the Liver Italian Program score, TNM (6th edition) stage, Okuda stage, and Chinese University Prognostic Index score were prospectively obtained for all patients, and retrospectively analyzed. Kaplan-Meier analysis was used to determine overall survival (OS), Cox regression analyses were performed, and Harrell's Correspondence Index compared the staging systems' ability to predict OS duration. Subgroup analyses of patients with or without hepatitis or cirrhosis were performed. 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 Median patient OS was 13.9 months; 165 patients (37.7%) had no cirrhosis and 256 patients (58.4%) had no hepatitis. Overall, all staging systems were significantly less predictive of OS in patients who did not have cirrhosis or hepatitis. 〈 b 〉 〈 i 〉 Conclusion: 〈 /i 〉 〈 /b 〉 Our results advocate the need to further stratify HCC based on cirrhosis and hepatitis status, which may change patient risk-stratification and, ultimately, treatment decisions.
    Type of Medium: Online Resource
    ISSN: 0030-2414 , 1423-0232
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    Language: English
    Publisher: S. Karger AG
    Publication Date: 2014
    detail.hit.zdb_id: 1483096-6
    detail.hit.zdb_id: 250101-6
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  • 10
    In: Oncology, S. Karger AG, Vol. 85, No. 4 ( 2013), p. 197-203
    Abstract: 〈 b 〉 〈 i 〉 Objective: 〈 /i 〉 〈 /b 〉 Fibrolamellar hepatocellular carcinoma (FLHCC) is a rare variant of HCC. We report an analysis of the clinicopathologic features, treatment outcomes, and prognostic indicators of 94 cases. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 We retrospectively collected clinicopathologic and treatment outcome data from 94 FLHCC patients (48 males and 46 females). Median overall survival (OS) and recurrence-free survival (RFS) were calculated using Kaplan-Meier curves, and survival rates were compared by the log-rank test. The Cox proportional hazard model was used for univariate and multivariate estimation of hazard risk ratios and 95% confidence intervals (CI) for factors that correlated with survival and disease recurrence after resection. 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 Median age was 23 years (14-75); median OS was 57.2 months (95% CI, 36.4-77.9), and median RFS was 13.9 months (95% CI, 8.8-18.9). White race, female gender, early tumor stage, and tumor resection including metastasectomy were positively associated with longer OS, while female gender was the only significant positive predictor of longer RFS. Finally, the 5-fluorouracil-interferon combination was the most frequently used systemic therapy. 〈 b 〉 〈 i 〉 Conclusions: 〈 /i 〉 〈 /b 〉 Our analyses indicate that surgical approaches including metastasectomy as the first-line treatment in FLHCC correlated with better outcome. Multimodality approaches, including neoadjuvant and adjuvant therapies, prolonged patient survival.
    Type of Medium: Online Resource
    ISSN: 0030-2414 , 1423-0232
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    Language: English
    Publisher: S. Karger AG
    Publication Date: 2013
    detail.hit.zdb_id: 1483096-6
    detail.hit.zdb_id: 250101-6
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