8 results on '"Bergström, Stefan"'
Search Results
2. Are older patients with non-small cell lung cancer receiving optimal care? A population-based study.
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Willén, Linda, Berglund, Anders, Bergström, Stefan, Isaksson, Johan, Bergqvist, Michael, Wagenius, Gunnar, and Lambe, Mats
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LUNG cancer diagnosis ,LUNG cancer ,SURVIVAL ,CANCER chemotherapy ,METASTASIS ,TUMOR classification ,RADIOSURGERY ,COMORBIDITY ,LONGITUDINAL method ,OLD age - Abstract
Results from studies addressing age-related patterns of cancer care have found evidence of unjustified differences in management between younger and older patients. We examined associations between age and clinical presentation, management and mortality in patients diagnosed with non-small cell lung cancer (NSCLC) between 2002 and 2016. Analyses were adjusted for comorbidity and other factors that may have affected management decisions and outcomes. The study population encompassed 40,026 patients with NSCLC. Stage at diagnosis did not differ between age groups ≤ 84. The diagnostic intensity was similar in age groups <80 years. In patients with stage IA–IIB disease and PS 0–2, surgery was more common in the youngest age groups and decreased with increasing age, and was rarely performed in those ≥ 85 years. The use of stereotactic body radiotherapy (SBRT) increased with age (≤69 years 5.4%; ≥85 years 35.8%). In patients with stage IIIA disease and PS 0–2, concurrent chemoradiotherapy was more common in younger patients (≤69 years 55.3%; ≥85 years 2.2%). In stage IA–IIIA disease, no major differences in treatment-related mortality was observed. In stage IIIB–IV and PS 0–2, chemotherapy was more common in patients <80 years. However, 58.1% of patients 80–84 years and 30.3% ≥ 85 years received treatment. In stage IA–IIIA, overall and cause-specific survival decreased with increasing age. No age-differences in survival were observed in patients with stage IIIB-IV NSCLC. Treatments were readily given to older patients with metastatic disease, but to a lesser degree to those with early stage disease. Significant differences in cause specific survival were observed in early, but not late stage disease. Our findings underscore the importance of individualized assessment of health status and life expectancy. Our results indicate that older patients with early stage lung cancer to a higher extent should be considered for curative treatment. [ABSTRACT FROM AUTHOR]
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- 2022
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3. Synergistic effects of combining proteasome inhibitors with chemotherapeutic drugs in lung cancer cells.
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Sooman, Linda, Gullbo, Joachim, Bergqvist, Michael, Bergström, Stefan, Lennartsson, Johan, and Ekman, Simon
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PROTEASOME inhibitors ,CANCER chemotherapy ,CANCER cells - Abstract
Background: The prognosis for patients with disseminated lung cancer is poor and current treatments have limited survival benefit as resistance often occurs, and is often associated with significant toxicity. A possible strategy to improve treatment and evade chemoresistance may be to find new combinations of drugs. The aim of this study was to analyze the potential of combining proteasome inhibitors (PIs) with chemotherapeutic drugs used in the routine treatment for lung cancer patients. Results: The median-effect method was applied to the Fluorometric Microculture Cytotoxicity Assay (FMCA) to evaluate effects of combining two different PIs (bortezomib and b-AP15) with clinically used chemotherapeutic drugs representing different mechanisms of action (cisplatin, gefitinib, gemcitabine and vinorelbine) in two lung cancer cell lines (one sensitive and one resistant). Proteasome inhibition in combination with cisplatin, gemcitabine or vinorelbine had synergistic effects in at least one of the tested cell lines. Furthermore, the effect of gefitinib appeared strongly potentiated by the PI in the least resistant lung cancer cell line, although the level of synergy could not be determined with the median-effect method. Conclusions: Combining PIs with cisplatin, gefitinib, gemcitabine or vinorelbine show potential as new combination chemotherapy for the treatment of lung cancer. [ABSTRACT FROM AUTHOR]
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- 2017
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4. The role of comorbidity in the management and prognosis in nonsmall cell lung cancer: a population-based study.
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Nilsson, Jonas, Berglund, Anders, Bergström, Stefan, Bergqvist, Michael, and Lambe, Mats
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LUNG cancer treatment ,LUNG cancer prognosis ,CONFIDENCE intervals ,LUNG cancer ,MORTALITY ,QUESTIONNAIRES ,TUMOR classification ,COMORBIDITY ,LOGISTIC regression analysis ,DESCRIPTIVE statistics ,ODDS ratio - Abstract
Background:Coexisting disease constitutes a challenge for the provision of optimal cancer care. The influence of comorbidity on lung cancer management and prognosis remains incompletely understood. We assessed the influence of comorbidity on treatment intensity and prognosis in a population-based setting in patients with nonsmall cell lung cancer. Material and methods:Our study was based on information available in Lung Cancer Data Base Sweden (LcBaSe), a database generated by record linkage between the National Lung Cancer Register (NLCR) and several other population-based registers in Sweden. The NLCR includes data on clinical characteristics on 95% of all patients with lung cancer in Sweden since 2002. Comorbidity was assessed using the Charlson Comorbidity Index. Logistic regression and time to event analysis was used to address the association between comorbidity and treatment and prognosis. Results:In adjusted analyses encompassing 19,587 patients with a NSCLC diagnosis and WHO Performance Status 0–2 between 2002 and 2011, those with stage-IA–IIB disease and severe comorbidity were less likely to be offered surgery (OR: 0.45; 95% CI: 0.36–0.57). In late-stage disease (IIIB–IV), severe comorbidity was also associated with lower chemotherapy treatment intensity (OR: 0.76; 95% CI: 0.65–0.89). In patients with early, but not late-stage disease, severe comorbidity in adjusted analyses was associated with an increased all-cause mortality, while lung cancer-specific mortality was largely unaffected by comorbidity burden. Conclusions:Comorbidity contributes to the poor prognosis in NSCLC patients. Routinely published lung cancer survival statistics not considering coexisting disease conveys a too pessimistic picture of prognosis. Optimized management of comorbid conditions pre- and post-NSCLC-specific treatment is likely to improve outcomes. [ABSTRACT FROM AUTHOR]
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- 2017
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5. Swedish Lung Cancer Radiation Study Group: Predictive value of age at diagnosis for radiotherapy response in patients with non-small cell lung cancer.
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Holgersson, Georg, Hoye, Even, Bergqvist, Michael, Ekman, Simon, Nyman, Jan, Helsing, Martin, Friesland, Signe, Holgersson, Margareta, Ekberg, Lars, Blystad, Thomas, Ewers, Sven-Börje, Mörth, Charlotte, Löden, Britta, Henriksson, Roger, and Bergström, Stefan
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LUNG cancer diagnosis ,LUNG cancer prognosis ,AGE distribution ,COMBINED modality therapy ,CONFIDENCE intervals ,LONGITUDINAL method ,LUNG cancer ,MULTIVARIATE analysis ,HEALTH outcome assessment ,RESEARCH ,STATISTICS ,SURVIVAL analysis (Biometry) ,SURVIVAL ,TREATMENT effectiveness ,PROPORTIONAL hazards models ,RETROSPECTIVE studies ,DESCRIPTIVE statistics ,KAPLAN-Meier estimator - Abstract
Introduction. The aim of the present study was to investigate the impact of age at diagnosis on prognosis in patients treated with curatively intended radiotherapy for NSCLC. Material and methods. This is a joint effort among all the Swedish Oncology Departments that includes all identified patients with a diagnosed non-small cell lung cancer that have been subjected to curatively intended irradiation (≥50 Gy) treated during 1990 to 2000. Included patients had a histopathological/cytological diagnosis date as well as a death date or a last follow-up date. The following variables were studied in relation to overall and disease-specific survival: age, gender, histopathology, time period, smoking status, stage and treatment. Results. The median overall survival of all 1146 included patients was 14.7 months, while the five-year overall survival rate was 9.5%. Younger patients (<55 years), presented with a more advanced clinical stage but had yet a significantly better overall survival compared with patients in the age groups 55-64 years (p = 0.035) and 65-74 years (p = 0.0097) in a multivariate Cox regression analysis. The overall survival of patients aged ≥75 years was comparable to those aged <55 years. Conclusion. In this large retrospective study we describe that patients younger than 55 years treated with curatively intended radiotherapy for NSCLC have a better overall survival than patients aged 55-64 and 65-74 years and that younger patients seem to benefit more from the addition of surgery and/or chemotherapy to radiotherapy. Due to the exploratory nature of the study, these results should be confirmed in future prospective trials. [ABSTRACT FROM AUTHOR]
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- 2012
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6. Swedish Lung Cancer Radiation Study Group: Predictive value of histology for radiotherapy response in patients with non-small cell lung cancer
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Holgersson, Georg, Bergström, Stefan, Bergqvist, Michael, Nyman, Jan, Hoye, Even, Helsing, Martin, Friesland, Signe, Holgersson, Margareta, Birath, Elisabet, Ekman, Simon, Blystad, Thomas, Ewers, Sven-Börje, Mörth, Charlotte, Löden, Britta, and Henriksson, Roger
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ANALYSIS of variance , *LUNG cancer , *PROBABILITY theory , *SURVIVAL analysis (Biometry) , *PREDICTIVE tests , *PROPORTIONAL hazards models - Abstract
Abstract: The aim of the present study was to evaluate the potential predictive value of histology in non-small cell lung cancer (NSCLC) treated with curatively intended radiotherapy. In a collaborative effort among all the Swedish Oncology Departments, clinical data were collected for 1146 patients with a diagnosed non-small cell lung cancer subjected to curatively intended irradiation (⩾50Gy) during the years 1990 to 2000. The included patients were identified based on a manual search of all medical and radiation charts at the oncology departments from which the individual patient data were collected. Only patients who did not have a histological diagnosis date and death date/last follow-up date were excluded (n =141). Among the 1146 patients with non-small cell carcinoma eligible for analysis, 919 were diagnosed with either adenocarcinoma (n =323) or squamous cell carcinoma (n =596) and included in this study. The median survival for the 919 patients was 14.8months, while the 5-year survival rate was 9.5%. Patients with adenocarcinoma had a significantly better overall survival compared with patients with squamous cell carcinoma (p =0.0062, log-rank test). When comparing different stages, this survival benefit was most pronounced for stages IIA–IIB (p <0.0001, log-rank test). The difference in survival between the two histological groups was statistically significant in a univariate Cox analysis (p =0.0063) as well as in two multivariate Cox analyses including demographic and treatment variables (p =0.037 and p =0.048, respectively). In this large population based retrospective study we describe for the first time that patients with adenocarcinoma have a better survival after curatively intended radiation therapy in comparison with squamous cell carcinoma patients, particularly those with clinical stages IIA–IIB. [Copyright &y& Elsevier]
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- 2011
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7. Reply to Assoc. Prof. Kocak.
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Willén, Linda, Berglund, Anders, Bergström, Stefan, Isaksson, Johan, Bergqvist, Michael, Wagenius, Gunnar, and Lambe, Mats
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LUNG cancer ,LUNG tumors ,BODY mass index ,CANCER patient medical care ,ELDER care - Published
- 2022
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8. Educational level and management and outcomes in non-small cell lung cancer. A nationwide population-based study.
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Willén, Linda, Berglund, Anders, Bergström, Stefan, Bergqvist, Michael, Öjdahl-Bodén, Anna, Wagenius, Gunnar, and Lambe, Mats
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NON-small-cell lung carcinoma , *EDUCATIONAL attainment , *NATIONAL health services , *STEREOTACTIC radiotherapy , *PATIENT education - Abstract
• Educational level was not associated with stage at diagnosis or waiting times. • The use of diagnostic methods and SBRT differed between educational groups. • A socioeconomic gradient in mortality was observed in early stage disease. • Observed differences may reflect use of novel diagnostic methods and treatments. We examined associations between educational level and clinical presentation, patterns of management and mortality in patients with non-small cell lung cancer (NSCLC) in Sweden, a country with a National Health Care System. We identified 39,671 patients with a NSCLC diagnosis 2002–2016 in Lung Cancer Data Base Sweden (LCBaSe), a population-based research database. In analyses adjusted for comorbidity and other prognostic factors, odds Ratios (OR) and hazard Ratios (HR) were estimated to examine associations between patients' educational level and aspects of management and mortality. Stage at diagnosis and waiting times did not differ between educational groups. In multivariable analysis, the likelihood to undergo PET/CT and assessment in a multidisciplinary team setting were higher in patients with high compared to low education (aOR 1.14; CI 1.05–1.23 and aOR 1.22; CI 1.14–1.32, respectively). In patients with early stage IA-IIB disease, the likelihood to undergo stereotactic radiotherapy was elevated in patients with high education (aOR 1.40; CI 1.03–1.91). Both all-cause (aHR 0.86; CI 0.77-0.92) and cause-specific mortality (aHR 0.83; CI 0.74-0.92) was lower in patients with high compared to low education in early stage disease (IA-IIB). In higher stage NSCLC no differences were observed. Patterns were similar in separate assessments stratified by sex and histopathology. While stage at diagnosis and waiting times did not differ between educational groups, we found socioeconomic differences in diagnostic intensity, multidisciplinary team assessment, stereotactic radiotherapy and mortality in patients with NSCLC. These findings may in part reflect social gradients in implementation and use of novel diagnostic and treatment modalities. Our findings underscore the need for improved adherence to national guidelines. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
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