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      The Impact of Diabetes Mellitus on Renal Cell Carcinoma Prognosis : A Meta-Analysis of Cohort Studies

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      Author(s): , MD, , MD, , MD, , MD, , MD, , MD, , MD, , MD, , MD, , MD, , MD, , MD
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      Publication date (Electronic):
      Journal: Medicine
      Publisher: Lippincott Williams & Wilkins

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          Abstract

          Previous studies that investigated the relationship between DM and survival in renal cell carcinoma (RCC) patients reported inconsistent findings. Hence, we conducted a meta-analysis to obtain a more precise evaluation of the prognostic significance of DM in RCC. A systematic review was conducted with PubMed, Embase, and Web of Science to identify relevant articles that evaluated the effect of DM on RCC patients. Based on the inclusion and quality assessment criteria, 18 studies were eligible for the meta-analysis. Pooled hazard ratios (HR) and corresponding 95% confidence intervals (CI) for overall survival (OS), cancer-specific survival (CSS), and recurrence-free survival (RFS) were calculated by standard meta-analysis techniques. The results suggested that DM was associated with poor OS (HR 1.56, 95% CI, 1.35–1.81, P < 0.001), poor CSS (HR 2.03, 95% CI, 1.37–3.01, P < 0.001), and poor RFS (HR 1.73, 95% CI, 1.25–2.39, P = 0.012). In addition, for patients with localized RCC, patients with clear cell RCC, or patients receiving nephrectomy, DM was associated with both poor OS and CSS by subgroup analyses. Our study revealed that there was a significant negative impact of DM on OS, CSS, and RFS in RCC patients. Therefore, more attention should be paid to RCC patients with preexisting DM because of their poor prognosis.

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          Fasting serum glucose level and cancer risk in Korean men and women.

          Sun Jee, Heechoul Ohrr, Jae Sull … (2005)
          Diabetes is a serious and costly disease that is becoming increasingly common in many countries. The role of diabetes as a cancer risk factor remains unclear. To examine the relationship between fasting serum glucose and diabetes and risk of all cancers and specific cancers in men and women in Korea. Ten-year prospective cohort study of 1,298,385 Koreans (829,770 men and 468,615 women) aged 30 to 95 years who received health insurance from the National Health Insurance Corp and had a biennial medical evaluation in 1992-1995 (with follow-up for up to 10 years). Death from cancer and registry-documented incident cancer or hospital admission for cancer. During the 10 years of follow-up, there were 20,566 cancer deaths in men and 5907 cancer deaths in women. Using Cox proportional hazards models and controlling for smoking and alcohol use, the stratum with the highest fasting serum glucose (> or =140 mg/dL [> or =7.8 mmol/L]) had higher death rates from all cancers combined (hazard ratio [HR], 1.29; 95% confidence interval [CI], 1.22-1.37 in men and HR, 1.23; 95% CI, 1.09-1.39 in women) compared with the stratum with the lowest level (<90 mg/dL [<5.0 mmol/L]). By cancer site, the association was strongest for pancreatic cancer, comparing the highest and lowest strata in men (HR, 1.91; 95% CI, 1.52-2.41) and in women (HR, 2.05; 95% CI, 1.43-2.93). Significant associations were also found for cancers of the esophagus, liver, and colon/rectum in men and of the liver and cervix in women, and there were significant trends with glucose level for cancers of the esophagus, colon/rectum, liver, pancreas, and bile duct in men and of the liver and pancreas in women. Of the 26,473 total cancer deaths in men and women, 848 were estimated as attributable to having a fasting serum glucose level of less than 90 mg/dL. For cancer incidence, the general patterns reflected those found for mortality. For persons with a diagnosis of diabetes or a fasting serum glucose level greater than 125 mg/dL (6.9 mmol/L), risks for cancer incidence and mortality were generally elevated compared with those without diabetes. In Korea, elevated fasting serum glucose levels and a diagnosis of diabetes are independent risk factors for several major cancers, and the risk tends to increase with an increased level of fasting serum glucose.
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            Less aggressive treatment and worse overall survival in cancer patients with diabetes: a large population based analysis.

            H R Haak, M W Dercksen, Chantal Heijnen … (2007)
            The purpose of this study was to document the prevalence of diabetes among newly diagnosed cancer patients and to evaluate the influence of diabetes on stage at diagnosis, treatment and overall survival. We performed a population-based analyses of all 58,498 cancer patients newly diagnosed between 1995 and 2002 in the registration area of the Eindhoven Cancer Registry. Stage of cancer, cancer treatment and comorbidities were actively collected by hospital medical records review. Follow-up of all patients was completed until January 1, 2005. Nine percent of all cancer patients had diabetes at the time of cancer diagnosis. The prevalence of diabetes was highest among patients with cancer of the pancreas (19%), uterus (14%) and among young men with kidney cancer (8%). Colon, breast and ovarian cancer patients with diabetes were more often diagnosed with a higher tumour stage (p < 0.05). Patients with diabetes and cancer of the oesophagus, colon, breast and ovary were treated less aggressively compared to those without diabetes (p < 0.05). During the follow-up period 3,902 of 5,555 cancer patients with diabetes died and 29,909 of 52,943 cancer patients without diabetes died. For all cancers combined, in a multivariate cox-regression model, adjusting for age, gender, stage, treatment and cardiovascular disease, patients with diabetes experienced a significant increase in overall mortality (HR = 1.44, 95% CI 1.40-1.49), ranging however from 0 to 40% for different types of cancer, compared to those without diabetes. In conclusion, diabetic cancer patients frequently were treated less aggressively and had a worse prognosis compared to those without diabetes. (c) 2007 Wiley-Liss, Inc.
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              Impact of prediagnosis smoking, alcohol, obesity, and insulin resistance on survival in male cancer patients: National Health Insurance Corporation Study.

              Ee Lim, S. Shin, Y Yun … (2006)
              Although many studies have demonstrated that smoking, alcohol, obesity, and insulin resistance are risk factors for cancer, the role of those factors on cancer survival has been less studied. The study participants were 14,578 men with a first cancer derived from a cohort of 901,979 male government employees and teachers who participated in a national health examination program in 1996. We obtained mortality data for those years from the Korean Statistical Office. We used a standard Poisson regression model to estimate the hazard ratio (HR) for survival in relation to smoking, alcohol, obesity, and insulin resistance before diagnosis. Poor survival of all cancer combined (HR, 1.24; 95% CI, 1.16 to 1.33), cancer of the lung (HR, 1.45; 95% CI, 1.15 to 1.82), and cancer of the liver (HR, 1.36; 95% CI, 1.21 to 1.53) were significantly associated with smoking. Compared with the nondrinker, heavy drinkers had worse outcomes for head and neck (HR, 1.85; 95% CI, 1.23 to 2.79) and liver (HR, 1.25; 95% CI, 1.11 to 1.41) cancer, with dose-dependent relationships. Patients with a fasting serum glucose level above 126 mg/dL had a higher mortality rate for stomach (HR, 1.52; 95% CI, 1.25 to 1.84) and lung (HR, 1.48; 95% CI, 1.18 to 1.87) cancer. Higher body mass index was significantly associated with longer survival in head and neck (HR, 0.54; 95% CI, 0.39 to 0.74) and esophagus (HR, 0.44; 95% CI, 0.28 to 0.68) cancer. Prediagnosis risk factors for cancer development (smoking, alcohol consumption, obesity, and insulin resistance) had a statistically significant effect on survival among male cancer patients.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Medicine (Baltimore)
                Journal ID (iso-abbrev): Medicine (Baltimore)
                Journal ID (publisher-id): MEDI
                Title: Medicine
                Publisher: Lippincott Williams & Wilkins
                ISSN (Print): 0025-7974
                ISSN (Electronic): 1536-5964
                Publication date Collection: July 2015
                Publication date (Electronic): 02 July 2015
                Volume: 94
                Issue: 26
                Electronic Location Identifier: e1055
                Affiliations
                From the State Key Laboratory of Kidney Diseases, Department of Urology, Chinese PLA Medical School, Chinese PLA General Hospital, Beijing (LC, HL, LG, XM, XL, YG, YZ, DS, YF, BW, XZ); and Medical School, Nankai University, Tianjin, People's Republic of China (XB).
                Author notes
                Correspondence: Xu Zhang, Department of Urology, Chinese PLA General Hospital, Beijing 100853, People's Republic of China (e-mail: xzhang@ 123456tjh.tjmu.edu.cn ).
                Article
                Accession ID: 01055
                DOI: 10.1097/MD.0000000000001055
                PMC ID: 4504607
                PubMed ID: 26131819
                SO-VID: cf2632b3-ed2a-43a9-8932-cd267ddc9dd3
                Copyright © Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.
                License:

                This is an open access article distributed under the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0

                History
                Date received : 27 March 2015
                Date received : 19 May 2015
                Date accepted : 25 May 2015
                Categories
                Subject: 7300
                Subject: Research Article
                Subject: Meta-Analysis of Observ Studies in Epidemiology
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                OPEN-ACCESS TRUE

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