scholarly journals Obesity paradox in patients with cancer: A systematic review and meta-analysis of 6,320,365 patients

2020 ◽  
Author(s):  
Fausto Petrelli ◽  
Alessio Cortellini ◽  
Alice Indini ◽  
Gianluca Tomasello ◽  
Michele Ghidini ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Systematic Review ◽  
Renal Cell Carcinoma ◽  
Meta Analysis ◽  
Obesity Paradox ◽  
Obese Patients ◽  
Patients With Cancer ◽  
Risk Of Death ◽  
Increased Risk ◽  
Obesity And Cancer

AbstractBACKGROUNDObesity, defined as a body mass index (BMI) > 30 kg/m2, is associated with a significant increase in risk of many cancers. In last years, various studies suggested that obese cancer patients have better outcomes than non-obese patients. This phenomenon, also known as “the obesity paradox”, is not well understood and presents controversial explanations. We performed a systematic review and meta-analysis to assess the association between obesity and outcome after a diagnosis of cancer.PATIENTS AND METHODSPubMed, the Cochrane Library, and EMBASE were searched from inception to January 2020, for studies reporting prognosis of patients with obesity and cancer. Risk of death, cancer-specific survival (CSS) and progression were pooled to provide an adjusted hazard ratio with a 95% confidence interval (HR 95%CI). The primary outcome of the study refers to overall survival (OS) in obese vs non-obese patients with malignancies. Secondary endpoints were CSS and progression- or disease-free survival (PFS or RFS).RESULTSMortality and relapse associated with obesity in patients with cancer were evaluated among n=6,320,365 participants (n=203 studies). Overall, association of obesity and cancer was associated with a reduced OS (HR =1.14, 95% CI: 1.09-1.19; P<.01) and CSS (HR=1.17, 95%CI 1.12-1.23; P<.01). Patients were also at increased risk for relapse (HR=1.13, 95%CI 1.07-1.19; P<.01). Patients with breast, colorectal and uterine tumors were at increased risk of death. Conversely, obese with lung cancer, renal cell carcinoma and melanoma survived longer that non-obese.CONCLUSIONSIn many cancer patients, obesity reduces survival and increases the risk of relapse. In lung cancer, renal cell carcinoma and melanoma obesity was protective in terms of outcome. More intensive follow up, adequate dosing of oncological treatments, calories intake restrictions, physical activity and monitoring of obesity-related complications are effective measures for reducing mortality in these subjects.

scholarly journals Clinical Characteristics and Outcomes of COVID-19–Infected Cancer Patients: A Systematic Review and Meta-Analysis

2020 ◽  
Author(s):  
Hua Zhang ◽  
Han Han ◽  
Tianhui He ◽  
Kristen E Labbe ◽  
Adrian V Hernandez ◽  
...  
Keyword(s):  
Risk Factors ◽  
Systematic Review ◽  
Case Fatality Rate ◽  
Meta Analysis ◽  
Univariate Analysis ◽  
Case Fatality ◽  
The United States ◽  
Fatality Rate ◽  
Patients With Cancer ◽  
Increased Risk

Abstract Background Previous studies have indicated coronavirus disease 2019 (COVID-19) patients with cancer have a high fatality rate. Methods We conducted a systematic review of studies that reported fatalities in COVID-19 patients with cancer. A comprehensive meta-analysis that assessed the overall case fatality rate and associated risk factors was performed. Using individual patient data, univariate and multivariable logistic regression analyses were used to estimate odds ratios (OR) for each variable with outcomes. Results We included 15 studies with 3019 patients, of which 1628 were men; 41.0% were from the United Kingdom and Europe, followed by the United States and Canada (35.7%), and Asia (China, 23.3%). The overall case fatality rate of COVID-19 patients with cancer measured 22.4% (95% confidence interval [CI] = 17.3% to 28.0%). Univariate analysis revealed age (OR = 3.57, 95% CI = 1.80 to 7.06), male sex (OR = 2.10, 95% CI = 1.07 to 4.13), and comorbidity (OR = 2.00, 95% CI = 1.04 to 3.85) were associated with increased risk of severe events (defined as the individuals being admitted to the intensive care unit, or requiring invasive ventilation, or death). In multivariable analysis, only age greater than 65 years (OR = 3.16, 95% CI = 1.45 to 6.88) and being male (OR = 2.29, 95% CI = 1.07 to 4.87) were associated with increased risk of severe events. Conclusions Our analysis demonstrated that COVID-19 patients with cancer have a higher fatality rate compared with that of COVID-19 patients without cancer. Age and sex appear to be risk factors associated with a poorer prognosis.

Association of chronic hepatitis C virus infection with an increased risk of lung cancer: A systematic review and meta-analysis.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e13562-e13562
Author(s):  
Ben Ponvilawan ◽  
Nipith Charoenngam ◽  
Pongprueth Rujirachun ◽  
Phuuwadith Wattanachayakul ◽  
Surapa Tornsatitkul ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Systematic Review ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Search Strategy ◽  
Meta Analysis ◽  
Hcv Infection ◽  
Increased Risk ◽  
Chronic Hcv Infection ◽  
Chronic Hcv

e13562 Background: Chronic hepatitis C virus (HCV) infection is associated with increased risk of multiple types of extrahepatic cancer, such as lymphomas, thyroid cancer and renal cancer. However, whether HCV infection also increases the risk of lung cancer is still inconclusive. This systematic review and meta-analysis was performed in order to determine the relationship between chronic HCV infection and lung cancer. Methods: A systematic review was performed using EMBASE and MEDLINE databases from inception to November 2019 with search strategy that represents “hepatitis C virus” and “cancer”. Eligible studies must be cohort studies which include patients with chronic HCV infection and comparators without HCV infection, then follow them for incident lung cancer. Relative risk, incidence rate ratio (IRR), standardized incidence ratio, or hazard risk ratio of this association along with associated 95% confidence interval (CI) from each study were extracted and combined for the calculation of the pooled effect estimate using the random effect, generic inverse variance. Results: 20,459 articles were discovered using the aforementioned search strategy. After two rounds of review, eight studies fulfilled the inclusion criteria and were included into the meta-analysis. Chronic HCV infection was significantly associated with increased risk of lung cancer with the pooled relative risk of 1.94 (95% CI, 1.56 – 2.42; I2 = 87%). Funnel plot was fairly symmetric and not suggestive of presence of publication bias. Conclusions: Chronic HCV infection is significantly associated with a 1.94-fold increased risk in the development of lung cancer compared to no infection.

Emergency Department Attendance by Patients With Cancer in Their Last Month of Life: A Systematic Review and Meta-Analysis

2015 ◽  
Vol 33 (4) ◽  
pp. 370-376 ◽  
Author(s):  
Lesley A. Henson ◽  
Wei Gao ◽  
Irene J. Higginson ◽  
Melinda Smith ◽  
Joanna M. Davies ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Emergency Department ◽  
Palliative Care ◽  
Meta Analysis ◽  
Cochrane Library ◽  
Black Race ◽  
Factors Associated ◽  
Patients With Cancer ◽  
Increased Risk ◽  
Combining Data

Purpose To explore factors associated with emergency department (ED) attendance by patients with cancer in their last month of life. Methods Five electronic databases (MEDLINE, EMBASE, CINAHL, PsycINFO, and the Cochrane Library) were searched through February 2014 for studies investigating ED attendance toward the end of life by adult patients (age 18 years or older) with cancer. No time or language limitations were applied. We performed meta-analysis of factors using a random-effects model, with results expressed as odds ratios (OR) for ED attendance. Sensitivity analyses explored heterogeneity. Results Thirty studies were identified, reporting three demographic, five clinical, and 13 environmental factors, combining data from five countries and 1,181,842 patients. An increased likelihood of ED attendance was found for men (OR, 1.24; 95% CI, 1.19 to 1.29; I2, 58.2%), black race (OR, 1.45; 95% CI, 1.40 to 1.50; I2, 0.0%; reference, white race), patients with lung cancer (OR, 1.17; 95% CI, 1.10 to 1.23; I2, 59.5%; reference, other cancers), and those patients of the lowest socioeconomic status (SES; OR, 1.15; 95% CI, 1.10 to 1.19; I2, 0.0%; reference, highest SES). Patients receiving palliative care were less likely to attend the ED in their last month of life (OR, 0.43; 95% CI, 0.36 to 0.51; I2, 59.4%). Conclusion We identified demographic (men; black race), clinical (lung cancer), and environmental (low SES; no palliative care) factors associated with an increased risk of ED attendance by patients with cancer in their last month of life. Our findings may be used to develop screening interventions and assist policy-makers to direct resources. Future studies should also investigate previously neglected areas of research, including psychosocial factors, and patients' and caregivers' emergency care preferences.

scholarly journals Association between health literacy and mortality: a systematic review and meta-analysis

2021 ◽  
Vol 79 (1) ◽  
Author(s):  
Zhao-ya Fan ◽  
Yuan Yang ◽  
Fan Zhang
Keyword(s):  
Systematic Review ◽  
Health Literacy ◽  
English Language ◽  
Meta Analysis ◽  
Correlation Coefficients ◽  
Functional Health ◽  
Risk Of Death ◽  
Number Of Patients ◽  
Increased Risk ◽  
Newcastle Ottawa Scale

Abstract Background To identify the relationship between health literacy (HL) and mortality based on a systematic review and meta-analysis. Methods Literature published from database inception until July 2020 was searched using the PubMed and Web of Science databases, using relevant keywords and clear inclusion and exclusion criteria. The search was limited to English language articles. Two reviewers independently selected studies and extracted data. Pooled correlation coefficients and their 95% confidence intervals (CI) between HL and mortality were estimated using Stata 15.0 software. Potential sources of heterogeneity were explored using subgroup analysis, sensitivity analysis, and meta-regression. Quality of the original studies that were included in the meta-analysis was evaluated using the Newcastle–Ottawa Scale. A funnel plot and Egger’s test were used to determine whether significant publication bias was present. Results Overall, 19 articles were included, reporting on a total of 41,149 subjects. Eleven were prospective cohort studies, and all articles were considered “good” quality. The most used screening instruments were the short Test of Functional Health Literacy (S-TOFHLA) in Adults and the Brief Health Literacy Screen (BHLS). Among 39,423 subjects (two articles did not report the number of patients with low HL), approximately 9202 (23%) had inadequate or marginal HL. The correlation coefficient between HL and mortality was 1.25 (95%CI = 0.25–0.44). Conclusion Lower HL was associated with an increased risk of death. This finding should be considered carefully and confirmed by further research.

scholarly journals Obesity as a risk factor for heart failure: overview of systematic reviews

2022 ◽  
Vol 11 (1) ◽  
pp. e0811124380
Author(s):  
Cleyton Oliveira Bezerra ◽  
Rafael Marinho de Lima Paiva ◽  
Thamires Lucena da Silva ◽  
Vinicius Soares Ribeiro ◽  
Cinthia Caldas Rios ◽  
...  
Keyword(s):  
Heart Failure ◽  
Risk Factor ◽  
Systematic Reviews ◽  
Data Extraction ◽  
Meta Analysis ◽  
Obesity Paradox ◽  
Overweight And Obesity ◽  
Risk Of Death ◽  
Increased Risk ◽  
Overview Of Systematic Reviews

The overweight and population with obesity has an increased risk of mortality from HF. However, some studies point to the existence of an "obesity paradox" where there could be a protective effect on the relative risk of death by HF in these populations with high BMI. In this way, the present study aimed to investigate obesity as a risk factor for heart failure. For this, an overview of systematic reviews was performed by selecting articles from the following databases: "Pubmed", "Scopus" and "SciElo”. A total of 615 articles were found from this initial search, leaving 59 articles for full-text reading, of which 22 articles were included for data extraction using the predefined inclusion criteria. From these 22 studies 73% were meta-analysis and 64% of the studies are of high methodological quality according to AMSTAR-2. Overweight and obesity have demonstrated a close relationship with the onset and increase of mortality by HF, studies have even been found that point to a gene interference in this relationship. In studies reporting on the obesity paradox, the results pointed to a momentary protection from mortality risk.

scholarly journals Cannabis Smoking And Risk Of Lung Cancer - A Systematic Review And Meta-Analysis

2014 ◽  
Vol 1 (2) ◽  
pp. 31-37 ◽  
Author(s):  
Khalid Bouti ◽  
Rajae Borki ◽  
Hicham Fenane ◽  
Laila Harrak
Keyword(s):  
Lung Cancer ◽  
Systematic Review ◽  
Fixed Effects ◽  
Meta Analysis ◽  
Case Control ◽  
Cochrane Library ◽  
Case Control Studies ◽  
Open Access Journals ◽  
Increased Risk ◽  
Cannabis Smoking

Background: Cannabis is the illicit psychoactive substance the most consumed in the world. Little is known about the association between the use of cannabis and the risk of lung cancer. Objective:The objective of this meta-analysis is to determine whether use of cannabis is a risk factor for lung cancer. Methods: We conducted a systematic review and meta-analyses of all languages articles using relevant computerised databases. MEDLINE (online PubMed), Web of knowledge, Embase, EBSCO CINAHL, ScienceDirect, Scopus, Cochrane Library, and Directory of Open Access Journals were searched to September 2014 for cohorts and case-control studies that assessed the risk of lung cancer associated with cannabis smoking. The literature search was performed with a combination of medical subject headings terms, "cannabis" and "lung neoplasms". Data extraction: Two investigators independently analysed and extracted results from eligible studies. Our study's registration number on PROSPERO is CRD42014008872. Results: The search strategy identified 2476 citations. 13 studies were eligible for inclusion: 2 pooled analysis of 9 case-control studies, one case-control study and 3 cohorts. The cumulative analysis for all the studies under a fixed-effects model showed that cannabis smoking determined an increased risk of developing lung cancer in the future (relative risk 1.22, 95% confidence interval 0.999–1.5; p=0.051), with no evidence of heterogeneity across the studies (I2: 34%; p¼0.01). Conclusions: The use of cannabis with or without tobacco smoking is associated with an increased risk for lung cancer

scholarly journals Obesity and Mortality Among Patients Diagnosed With COVID-19: A Systematic Review and Meta-Analysis

2021 ◽  
Vol 8 ◽  
Author(s):  
Tahmina Nasrin Poly ◽  
Md. Mohaimenul Islam ◽  
Hsuan Chia Yang ◽  
Ming Chin Lin ◽  
Wen-Shan Jian ◽  
...  
Keyword(s):  
Systematic Review ◽  
Risk Ratio ◽  
Web Of Science ◽  
Meta Analysis ◽  
Epidemiological Studies ◽  
Class Iii ◽  
Risk Of Death ◽  
Risk Of Mortality ◽  
Increased Risk ◽  
Class Iii Obesity

Coronavirus disease 2019 (COVID-19) has already raised serious concern globally as the number of confirmed or suspected cases have increased rapidly. Epidemiological studies reported that obesity is associated with a higher rate of mortality in patients with COVID-19. Yet, to our knowledge, there is no comprehensive systematic review and meta-analysis to assess the effects of obesity and mortality among patients with COVID-19. We, therefore, aimed to evaluate the effect of obesity, associated comorbidities, and other factors on the risk of death due to COVID-19. We did a systematic search on PubMed, EMBASE, Google Scholar, Web of Science, and Scopus between January 1, 2020, and August 30, 2020. We followed Cochrane Guidelines to find relevant articles, and two reviewers extracted data from retrieved articles. Disagreement during those stages was resolved by discussion with the main investigator. The random-effects model was used to calculate effect sizes. We included 17 articles with a total of 543,399 patients. Obesity was significantly associated with an increased risk of mortality among patients with COVID-19 (RRadjust: 1.42 (95%CI: 1.24–1.63, p &lt; 0.001). The pooled risk ratio for class I, class II, and class III obesity were 1.27 (95%CI: 1.05–1.54, p = 0.01), 1.56 (95%CI: 1.11–2.19, p &lt; 0.01), and 1.92 (95%CI: 1.50–2.47, p &lt; 0.001), respectively). In subgroup analysis, the pooled risk ratio for the patients with stroke, CPOD, CKD, and diabetes were 1.80 (95%CI: 0.89–3.64, p = 0.10), 1.57 (95%CI: 1.57–1.91, p &lt; 0.001), 1.34 (95%CI: 1.18–1.52, p &lt; 0.001), and 1.19 (1.07–1.32, p = 0.001), respectively. However, patients with obesity who were more than 65 years had a higher risk of mortality (RR: 2.54; 95%CI: 1.62–3.67, p &lt; 0.001). Our study showed that obesity was associated with an increased risk of death from COVID-19, particularly in patients aged more than 65 years. Physicians should aware of these risk factors when dealing with patients with COVID-19 and take early treatment intervention to reduce the mortality of COVID-19 patients.

Incidence and risk of neutropenia with palbociclib in patients with cancer: A systematic review and meta-analysis.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. e12530-e12530
Author(s):  
Yan Mao ◽  
Janice Lu ◽  
Haibo Wang ◽  
Gang Nie
Keyword(s):  
Systematic Review ◽  
Fixed Effects ◽  
Meta Analysis ◽  
Significant Risk ◽  
Metastatic Breast ◽  
Progression Free Survival ◽  
High Grade ◽  
Fixed Effects Model ◽  
Patients With Cancer ◽  
Increased Risk

e12530 Background: Palbociclib is an oral small-molecule inhibitor of cyclin-dependent kinases 4 and 6 and has improved the progression-free survival of estrogen receptor positive, metastatic breast cancer (MBC). Its application in other cancers is also undergoing clinical evaluation. Neutropenia, especially high grade (grade 3 or 4), is one of the major side-effects of palbociclib, and the incidence was reported too vary in different studies. In order to better understand the overall risk of palbociclib associated neutropenia, we conducted a systematic review and meta-analysis. Methods: We conducted a systematic literature search (including Medline, Web of Science to November, 2016 and abstracts presented at the ASCO annual meetings from 2009 to 2016). Eligible studies include prospective clinical trials of patients with cancer treated with palbociclib on a 125mg daily 3/4 week schedule and have available data on neutropenia. The incidence and relative risk (RR) of neutropenia were calculated using a random-effects or fixed-effects model, depending on the heterogeneity of the included studies. Results: Eight studies published between 2012 and 2016 included a total of 1515 patients with cancer were eligible for analysis. For patients treated with palbociclib, the overall incidence of all-grade and high grade neutropenia were 77.4% (95% CI 70.9-82.8%) and 60.9% (57.8–63.8%), respectively. Surprisingly, the incidence of neutropenia was significantly different between MBC patients and non-MBC patients (all grade: RR 1.26 [95% CI 1.01–1.56], p = 0.041; high-grade: RR 1.57 [1.23–2.00], p = 0.000) who received palbociclib. Palbociclib was associated with a significantly increased risk of all-grade neutropenia in patients with cancer with an RR of 15.03 (10.17–22.21, p < 0.001) compared with controls. Conclusions: Patients with cancer who received palbociclib have a significant risk of developing neutropenia, especially MBC patients. It is strongly recommended to monitor these patients who are treated with palbociclib to adjust dose, treatment intervals, and avoid infections.

scholarly journals An increased risk of lung cancer in combined pulmonary fibrosis and emphysema patients with usual interstitial pneumonia compared with patients with idiopathic pulmonary fibrosis alone: a systematic review and meta-analysis

2021 ◽  
Vol 15 ◽  
pp. 175346662110170
Author(s):  
Qianqian Chen ◽  
Ping Liu ◽  
Hong Zhou ◽  
Hui Kong ◽  
Weiping Xie
Keyword(s):  
Lung Cancer ◽  
Systematic Review ◽  
Idiopathic Pulmonary Fibrosis ◽  
Pulmonary Fibrosis ◽  
Interstitial Pneumonia ◽  
Fixed Effects ◽  
Meta Analysis ◽  
Usual Interstitial Pneumonia ◽  
Fixed Effects Model ◽  
Increased Risk

Background: Lung cancer is an important complication of combined pulmonary fibrosis and emphysema (CPFE). Whether the risk of lung cancer is higher in CPFE patients with usual interstitial pneumonia (UIP) than those with idiopathic pulmonary fibrosis (IPF) alone, remains controversial. We conducted this systematic review and meta-analysis to evaluate the prevalence of lung cancer in CPFE patients with UIP compared with IPF patients. Methods: We searched the PubMed, Embase, and Cochrane databases for studies that focused on the incidence of lung cancer in CPFE/UIP and IPF groups. We used a fixed-effects model to analyze the odds ratios (ORs) with 95% confidence intervals (CIs) according to data heterogeneity. The cumulative effects based on the publication year and sample size were assessed by cumulative meta-analysis. Results: A total of nine studies with 933 patients, including 374 CPFE patients with UIP, fulfilled the inclusion criteria. Overall, CPFE patients with UIP have a higher risk of lung cancer than those with IPF alone (OR = 2.69; 95% CI: 1.78–4.05). There were increased risks of lung cancer in CPFE/UIP patients with the presence of emphysema (OR = 2.93; 95% CI: 1.79–4.79) or emphysema in ⩾10% of the lung volume (OR = 2.22; 95% CI: 1.06–4.68). Conclusions: Our systematic review and meta-analysis indicated a significantly higher prevalence of lung cancer in CPFE patients with UIP than in patients with IPF alone. The reviews of this paper are available via the supplemental material section.

Sign in / Sign up

Export Citation Format

Share Document