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  • Lindskog, M., et al. (författare)
  • Overall survival in Swedish patients with renal cell carcinoma treated in the period 2002 to 2012: Update of the RENCOMP study with subgroup analysis of the synchronous metastatic and elderly populations
  • 2017
  • Ingår i: Urologic Oncology-Seminars and Original Investigations. - : ELSEVIER SCIENCE INC. - 1078-1439 .- 1873-2496. ; 35:9, s. 541.e15-541.e22
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: This retrospective study investigated overall survival (OS) and factors influencing OS in Swedish patients with metastatic renal cell carcinoma (mRCC) during the pre- (2002-2005), early (2006-2008), and late (2009-2012) targeted therapy (TT) era. Methods: Three national Swedish registries identified patients with mRCC. Median OS was estimated using the Kaplan-Meier method. Multivariate analysis was performed using Cox proportional hazards regression. Subgroup analysis was conducted for patients with synchronous metastases (Ml) and the elderly (aged >= 75 y). Results: A total of 4,217 patients with mRCC were identified, including 1,533 patients with Ml and 1,275 elderly patients. For patients with mRCC diagnosed in 2002 to 2005, 2006 to 2008, and 2009 to 2012, median OS was 10.0, 13.0, and 18.0 months. Similarly, median OS improved in the M1 and elderly populations. Elderly patients were less likely to be prescribed TT (>= 75 vs. <75 y): 18.3 vs. 63.5% (in 2006-2008) and 28.6% vs. 55.9% (in 2009-2012). Diagnosis of mRCC in 2009 to 2012, nephrectomy and TT prescription were associated with improved OS in the total mRCC, Ml, and elderly populations. Conclusion: This real-world study showed continued significant improvement in mRCC OS during the late TT era, including in Ml and elderly populations. TT should be considered for all patients with mRCC based on tolerability, regardless of age. (C) 2017 Elsevier Inc. All rights reserved.
  • Büchner, Frederike L, et al. (författare)
  • Variety in vegetable and fruit consumption and risk of bladder cancer in the European prospective investigation into cancer and nutrition
  • 2011
  • Ingår i: International Journal of Cancer. - : Wiley. - 0020-7136 .- 1097-0215. ; 128:12, s. 2971-2979
  • Tidskriftsartikel (refereegranskat)abstract
    • Recent research does not show an association between fruit and vegetable consumption and bladder cancer risk. None of these studies investigated variety in fruit and vegetable consumption, which may capture different aspects of consumption. We investigated whether a varied consumption of vegetables and fruits is associated with bladder cancer risk in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. Detailed data on food consumption and complete follow-up for cancer incidence were available for 452,185 participants, who were recruited from ten European countries. After a mean follow-up of 8.7 years, 874 participants were diagnosed with bladder cancer. Diet diversity scores (DDSs) were used to quantify the variety in fruit and vegetable consumption. Multivariable Cox proportional hazard models were used to assess the effect of the DDSs on bladder cancer risk. There was no evidence of a statistically significant association between bladder cancer risk and any of the DDSs when these scores were considered as continuous covariates. However, the hazard ratio (HR) for the highest tertile of the DDS for combined fruit and vegetable consumption was marginally significant compared to the lowest (HR = 1.30, 95% confidence interval: 1.00-1.69, p-trend = 0.05). In EPIC, there is no clear association between a varied fruit and vegetable consumption and bladder cancer risk. This finding provides further evidence for the absence of any strong association between fruit and vegetable consumption as measured by a food frequency questionnaire and bladder cancer risk.
  • Buckland, G, et al. (författare)
  • Adherence to the Mediterranean diet and risk of bladder cancer in the EPIC cohort study
  • 2014
  • Ingår i: International Journal of Cancer. - : Wiley-Blackwell. - 0020-7136 .- 1097-0215. ; 134:10, s. 2504-2511
  • Tidskriftsartikel (refereegranskat)abstract
    • There is growing evidence of the protective role of the Mediterranean diet (MD) on cancer. However, to date no epidemiological study has investigated the influence of the MD on bladder cancer. We evaluated the association between adherence to the MD and risk of urothelial cell bladder cancer (UCC), according to tumor aggressiveness, in the European Prospective Investigation into Cancer and Nutrition (EPIC). The analysis included 477,312 participants, recruited from ten European countries between 1991 and 2000. Information from validated dietary questionnaires was used to develop a relative Mediterranean diet score (rMED), including nine dietary components. Cox regression models were used to assess the effect of the rMED on UCC risk, while adjusting for dietary energy and tobacco smoking of any kind. Stratified analyses were performed by sex, BMI, smoking status, European region and age at diagnosis. During an average follow-up of 11 years, 1,425 participants (70.9% male) were diagnosed with a first primary UCC. There was a negative but non-significant association between a high versus low rMED score and risk of UCC overall (HR: 0.84 [95% CI 0.69, 1.03]) and risk of aggressive (HR: 0.88 [95% CI 0.61, 1.28]) and non-aggressive tumors (HR: 0.78 [95% CI 0.54, 1.14]). Although there was no effect modification in the stratified analyses, there was a significant 34% (p = 0.043) decreased risk of UCC in current smokers with a high rMED score. In EPIC, the MD was not significantly associated with risk of UCC, although we cannot exclude that a MD may reduce risk in current smokers.
  • Jahnson, Staffan, et al. (författare)
  • Swedish National Registry of Urinary Bladder Cancer : no difference in relative survival over time despite more aggressive treatment
  • 2016
  • Ingår i: Scandinavian journal of urology. - : Taylor & Francis. - 2168-1805 .- 2168-1813. ; 50:1, s. 14-20
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: The aim of this study was to use the Swedish National Registry of Urinary Bladder Cancer (SNRUBC) to investigate changes in patient and tumour characteristics, management and survival in bladder cancer cases over a period of 15 years. MATERIALS AND METHODS: All patients with newly detected bladder cancer reported to the SNRUBC during 1997-2011 were included in the study. The cohort was divided into three groups, each representing 5 years of the 15 year study period. RESULTS: The study included 31,266 patients (74% men, 26% women) with a mean age of 72 years. Mean age was 71.7 years in the first subperiod (1997-2001) and 72.5 years in the last subperiod (2007-2011). Clinical T categorization changed from the first to the last subperiod: Ta from 45% to 48%, T1 from 21.6% to 22.4%, and T2-T4 from 27% to 25%. Also from the first to the last subperiod, intravesical treatment after transurethral resection for T1G2 and T1G3 tumours increased from 15% to 40% and from 30% to 50%, respectively, and cystectomy for T2-T4 tumours increased from 30% to 40%. No differences between the analysed subperiods were found regarding relative survival in patients with T1 or T2-T4 tumours, or in the whole cohort. CONCLUSIONS: This investigation based on a national bladder cancer registry showed that the age of the patients at diagnosis increased, and the proportion of muscle-invasive tumours decreased. The treatment of all tumour stages became more aggressive but relative survival showed no statistically significant change over time.
  • Jakszyn, Paula, et al. (författare)
  • Red Meat, Dietary Nitrosamines, and Heme Iron and Risk of Bladder Cancer in the European Prospective Investigation into Cancer and Nutrition (EPIC)
  • 2011
  • Ingår i: Cancer Epidemiology Biomarkers & Prevention. - : American Association for Cancer Research. - 1538-7755 .- 1055-9965. ; 20:3, s. 555-559
  • Tidskriftsartikel (övrigt vetenskapligt)abstract
    • Background: Previous epidemiologic studies found inconsistent results for the association between red meat intake, nitrosamines [NDMA: N-nitrosodimethylamine, and ENOC (endogenous nitroso compounds)], and the risk of bladder cancer. We investigated the association between red meat consumption, dietary nitrosamines, and heme iron and the risk of bladder cancer among participants of the European Prospective Investigation into Cancer and Nutrition (EPIC). Methods: Data on food consumption and complete follow-up for cancer occurrence were available for a total of 481,419 participants, recruited in 10 European countries. Estimates of HRs were obtained by proportional hazard models, stratified by age at recruitment, gender, and study center and adjusted for total energy intake, smoking status, lifetime intensity of smoking, duration of smoking, educational level, and BMI. Results: After a mean follow-up of 8.7 years, 1,001 participants were diagnosed with bladder cancer. We found no overall association between intake of red meat (log(2) HR: 1.06; 95% CI: 0.99-1.13), nitrosamines (log(2) HR: 1.09; 95% CI: 0.92-1.30 and HR: 0.98; 95% CI: 0.92-1.05 for ENOC and NDMA, respectively) or heme iron (log(2) HR: 1.05; 95 CI: 0.99-1.12) and bladder cancer risk. The associations did not vary by sex, high-versus low-risk bladder cancers, smoking status, or occupation (high vs. low risk). Conclusions: Our findings do not support an effect of red meat intake, nitrosamines (endogenous or exogenous), or heme iron intake on bladder cancer risk. Cancer Epidemiol Biomarkers Prev; 20(3); 555-9. (C)2011 AACR.
  • Jerlstrom, Tomas, et al. (författare)
  • Urinary bladder cancer treated with radical cystectomy: Perioperative parameters and early complications prospectively registered in a national population-based database
  • 2014
  • Ingår i: Scandinavian Journal of Urology. - London : Taylor & Francis. - 2168-1813 .- 2168-1805. ; 48:4, s. 334-340
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective. Cystectomy combined with pelvic lymph-node dissection and urinary diversion entails high morbidity and mortality. Improvements are needed, and a first step is to collect information on the current situation. In 2011, this group took the initiative to start a population-based database in Sweden (population 9.5 million in 2011) with prospective registration of patients and complications until 90 days after cystectomy. This article reports findings from the first year of registration. Material and methods. Participation was voluntary, and data were reported by local urologists or research nurses. Perioperative parameters and early complications classified according to the modified Clavien system were registered, and selected variables of possible importance for complications were analysed by univariate and multivariate logistic regression. Results. During 2011, 285 (65%) of 435 cystectomies performed in Sweden were registered in the database, the majority reported by the seven academic centres. Median blood loss was 1000 ml, operating time 318 min, and length of hospital stay 15 days. Any complications were registered for 103 patients (36%). Clavien grades 1-2 and 3-5 were noted in 19% and 15%, respectively. Thirty-seven patients (13%) were reoperated on at least once. In logistic regression analysis elevated risk of complications was significantly associated with operating time exceeding 318 min in both univariate and multivariate analysis, and with age 76-89 years only in multivariate analysis. Conclusions. It was feasible to start a national population-based registry of radical cystectomies for bladder cancer. The evaluation of the first year shows an increased risk of complications in patients with longer operating time and higher age. The results agree with some previously published series but should be interpreted with caution considering the relatively low coverage, which is expected to be higher in the future.
  • Landberg, A., et al. (författare)
  • The renal cell cancer database Sweden (RCCBaSe)–a new register-based resource for renal cell carcinoma research
  • 2020
  • Ingår i: Scandinavian Journal of Urology. - : Taylor & Francis. - 2168-1805 .- 2168-1813. ; 54:3, s. 235-240
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: In 2005, the National Swedish Kidney Cancer Register (NSKCR) was set up to collect data on newly diagnosed patients with renal cell carcinoma (RCC). In 2015, the NSKCR was linked to a number of national healthcare and demographic registers to construct the Renal Cell Cancer Database Sweden (RCCBaSe). The aim was to facilitate research on trends in incidence, effects of treatment and survival, with detailed data on tumour characteristics, treatment, pharmaceutical prescriptions, socioeconomic factors and comorbidity. Material and methods: All patients registered in the NSKCR between 2005 and 2014 were included. For each case, ten controls and first-degree relatives for cases and controls were identified. The RCCBaSe was created linking all cases, controls and first-degree relatives to a number of national registers with information on co-morbidity, socioeconomic factors and pharmaceutical prescriptions. Results: Between 2005 and 2014, a total of 9,416 patients with RCC were reported to the NSKCR. 94,159 controls and a total cohort of 575,007 individuals including cases, controls and first-degree relatives were identified. Linkage to the Swedish cancer register resulted in 106,772 matches. When linked to the National patient register, 432,677 out-patient and 471,359 in-patient matches were generated. When linked to the Swedish renal registry 1,778 matches were generated. Linkage to the Prescribed drug register resulted in 448,084 matches and linkage to the The Longitudinal integration database for health insurance and labour market studies database resulted in 450,017 matches. Conclusion: By linking the NSKCR to several Swedish national databases, a unique database for RCC research has been created. © 2020, © 2020 Acta Chirurgica Scandinavica Society.
  • Landberg, Anna, et al. (författare)
  • Validation of data quality in the National Swedish Kidney Cancer Register
  • 2021
  • Ingår i: Scandinavian journal of urology. - : Taylor & Francis Group. - 2168-1805 .- 2168-1813. ; 55:2, s. 142-148
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: The National Swedish Kidney Cancer Register (NSKCR) was launched in 2005. It is used for health care quality improvement and research. The aim of this study was to validate the register’s data quality by assessing the timeliness, completeness, comparability and validity of the register.Material and Methods: To assess timeliness we evaluated the number of days between date of diagnosis and date of reporting the patient to the NSKCR. For completeness, we used data on number of cancer cases reported to the NSKCR compared to cases reported to the Swedish Cancer Register. Comparability was evaluated by reviewing coding routines and comparing data collected in the NSKCR to national and international guidelines. Validity was assessed by reabstraction of data from medical charts from 431 randomly selected patients diagnosed in 2007, 2010, 2013 and 2016.Results: Timeliness has improved since the register started. In 2016, 76.9% and 96.5% of the patients were reported within 6 and 12 months respectively. Completeness was high, with a 99.5% coverage between 2008 and 2017. Registration forms and manuals were updated according to national and European guidelines. Improvements have been made continuously to decrease the risk of reporting mistakes and misunderstandings. Validity was high where a majority of the variables demonstrated an exact agreement >90% and few missing values.Conclusion: Overall, the data quality of the NSKCR is high. Completeness, comparability and validity is high. Timeliness can be further improved, which will make it easier to follow changes and improve the care and research of RCC patients.
  • Laskar, Ruhina S, et al. (författare)
  • Sex specific associations in genome wide association analysis of renal cell carcinoma.
  • 2019
  • Ingår i: European Journal of Human Genetics. - : Nature Publishing Group. - 1018-4813 .- 1476-5438. ; 27:10, s. 1589-1598
  • Tidskriftsartikel (refereegranskat)abstract
    • Renal cell carcinoma (RCC) has an undisputed genetic component and a stable 2:1 male to female sex ratio in its incidence across populations, suggesting possible sexual dimorphism in its genetic susceptibility. We conducted the first sex-specific genome-wide association analysis of RCC for men (3227 cases, 4916 controls) and women (1992 cases, 3095 controls) of European ancestry from two RCC genome-wide scans and replicated the top findings using an additional series of men (2261 cases, 5852 controls) and women (1399 cases, 1575 controls) from two independent cohorts of European origin. Our study confirmed sex-specific associations for two known RCC risk loci at 14q24.2 (DPF3) and 2p21(EPAS1). We also identified two additional suggestive male-specific loci at 6q24.3 (SAMD5, male odds ratio (ORmale) = 0.83 [95% CI = 0.78-0.89], Pmale = 1.71 × 10-8 compared with female odds ratio (ORfemale) = 0.98 [95% CI = 0.90-1.07], Pfemale = 0.68) and 12q23.3 (intergenic, ORmale = 0.75 [95% CI = 0.68-0.83], Pmale = 1.59 × 10-8 compared with ORfemale = 0.93 [95% CI = 0.82-1.06], Pfemale = 0.21) that attained genome-wide significance in the joint meta-analysis. Herein, we provide evidence of sex-specific associations in RCC genetic susceptibility and advocate the necessity of larger genetic and genomic studies to unravel the endogenous causes of sex bias in sexually dimorphic traits and diseases like RCC.
  • Liedberg, Fredrik, et al. (författare)
  • Local recurrence and progression of non-muscle-invasive bladder cancer in Sweden : a population-based follow-up study
  • 2015
  • Ingår i: Scandinavian journal of urology. - : Informa Healthcare. - 2168-1805 .- 2168-1813. ; 49:4, s. 290-295
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective. The aim of this study was to investigate recurrence and progression of non-muscle-invasive bladder cancer (NMIBC) in a large population-based setting. Materials and methods. Patients with bladder cancer (stage Ta, T1 or carcinoma in situ) diagnosed in 2004-2007 (n = 5839) in Sweden were investigated 5 years after diagnosis using a questionnaire. Differences in time to recurrence and progression were analysed in relation to age, gender, tumour stage and grade, intravesical treatment, healthcare region, and hospital volume of NMIBC patients (stratified in three equally large groups). Results. Local bladder recurrence and progression occurred in 50 and 9% of the patients, respectively. The rate of local recurrence was 56% in the southern healthcare region compared to 37% in the northern region. A multivariate Cox proportional hazards model, adjusting for age, gender, tumour stage and grade, intravesical treatment, healthcare region and hospital volume, showed that recurrence was associated with TaG2 and T1 disease, no intravesical treatment and treatment in the southern healthcare region, but indicated a lower risk of recurrence in the northern healthcare region. Adjusting for the same factors in a multivariate analysis suggested that increased relative risk of progression correlated with older age, higher tumour stage and grade, and diagnosis in the Uppsala/Orebro healthcare region, whereas such risk was decreased by intravesical treatment (relative risk 0.72, 95% confidence interval 0.55-0.93, p = 0.012). Conclusions. The incidence of NMIBC recurrence and progression was found to be high in Sweden, and important disparities in outcome related to care patterns appear to exist between different healthcare regions.
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