MiR-146a rs2910164 polymorphism is associated with hepatocellular carcinoma: a meta-analysis.
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Results of published studies on the association between the miR-146a rs2910164 polymorphism and the risk of hepatocellular carcinoma (HCC) were inclusive. We performed a meta-analysis. A literature research was conducted using PubMed, Cochrane Library, Ovid, Embase, Wanfang and China National Knowledge Infrastructure (CNKI) databases, to identify studies. Statistical analyses were conducted in STATA version 11.0 (Stata Corporation, College station, TX, USA). A total of 12 publications were included in this meta-analysis. The results of this meta-analysis suggested that miR-146a rs2910164 was associated with an increased risk of HCC (OR = 1.09, 95% CI = 1.00-1.19). In sensitivity analysis, the result was still positive when excluding the studies without HWE (OR = 1.12, 95% CI = 1.01-1.23). In conclusion, this meta-analysis suggested a significant association between miR-146a rs2910164 polymorphism and HCC risk.Keywords:
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Various studies examined the relationship between p53 expression with the clinical outcome in patients with hepatocellular carcinoma (HCC), but yielded conflicting results. Electronic databases updated to July 2013 were searched to find relevant studies. A meta-analysis was conducted with eligible studies which quantitatively evaluated the relationship between p53 expression and survival of patients with HCC. Survival data were aggregated and quantitatively analyzed. We performed a meta-analysis of 24 studies that evaluated the correlation between p53 expression and survival in patients with HCC. Combined hazard ratios suggested that p53 expression had an unfavorable impact on overall survival (OS) (HR (hazard ratio) = 1.55, 95 % CI (confidence interval) 1.36-1.74) and disease-free survival (DFS) (HR = 1.54, 95 % CI 1.21-1.88) in patients with HCC. No significant heterogeneity was observed among 20 studies for OS (P = 0.786) and among 11 studies for DFS (P = 0.698). P53 expression indicates a poor prognosis for patients with hepatocellular carcinoma.
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Abstract Several studies have investigated the relationship between Manganese (Mn) levels and hepatocellular carcinoma (HCC), but the results were inconsistent. Thus, we conducted a systematic review and meta-analysis to evaluate the association between Mn levels and HCC. Nine studies focusing on hair Mn levels, 6 studies on serum Mn levels and 6 studies on tissue Mn levels were identified in a systematic search of PubMed, CNKI, Wanfang and SinoMed databases. Standard mean differences (SMD) with the corresponding 95% confidence intervals (CI) were pooled to compare the Mn levels between HCC and controls. In serum, the Mn levels in HCC were significantly lower than in healthy controls (SMD (95% CI): −0.941 (−1.559, −0.323)). In hair, the Mn levels in HCC were slightly lower than in healthy controls, but not significant (SMD (95% CI): −0.168 (−0.766, 0.430)). In tissue, the Mn levels in tumors were significantly lower than in adjacent normal tissues (SMD (95% CI): −4.867 (−7.143, −2.592)). Subgroup analysis showed consistent results. In conclusion, this meta-analysis suggested an inverse association between Mn levels and HCC.
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Abstract BackgroundRecent studies have shown that MicroRNAs can be used as potential biomarkers to the prognosis in non-small cell lung cancer (NSCLC). Hence, we conducted this meta-analysis to evaluate the prognostic role of microRNA let-7 in NSCLC patients.MethodsPubMed, Web of Science, Medline and the Cochrane Library were searched for relevant studies. Eligible studies were met specific inclusion and exclusion criteria. Stata 15.1 was used to calculate the pooled parameters.ResultsA total of 11 studies involving 2278 NSCLC patients were included in this meta-analysis. Subgroup analyses established that the heterogeneity was connected with ethnicity and follow-up time. The results suggested that the low expression of microRNA let-7 indicates a poor overall survival rate, with a hazard ratio value of 0.99 (95% CI: 0.64-1.34, P <0.05).ConclusionsLow expression of microRNA let-7 is closely related to the poor prognosis of NSCLC, so microRNA let-7 may become a new biomarker to evaluate the prognosis of NSCLC patients.
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Objective: The primary purpose of our study is to systemically evaluate the effect of repetitive transcranial magnetic stimulation (rTMS) on recovery of dysphagia after stroke. Search Methods: We searched randomized controlled trials (RCTs) and non-RCTs published by PubMed, the Cochrane Library, ScienceDirect, MEDLINE, and Web of Science from inception until April 24, 2021. Language is limited to English. After screening and extracting the data, and evaluating the quality of the selected literature, we carried out the meta-analysis with software RevMan 5.3 and summarized available evidence from non-RCTs. Results: Among 205 potentially relevant articles, 189 participants (from 10 RCTs) were recruited in the meta-analysis, and six non-RCTs were qualitatively described. The random-effects model analysis revealed a pooled effect size of SMD = 0.65 (95% CI = 0.04-1.26, p = 0.04), which indicated that rTMS therapy has a better effect than conventional therapy. However, the subgroup analysis showed that there was no significant difference between low-frequency and high-frequency groups. Even more surprisingly, there were no statistically significant differences between the two groups and the conventional training group in the subgroup analysis, but the combined effect was positive. Conclusion: Our study suggests that rTMS might be effective in treating patients with dysphagia after stroke.
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Results of published studies on the association between the miR-146a rs2910164 polymorphism and the risk of hepatocellular carcinoma (HCC) were inclusive. We performed a meta-analysis. A literature research was conducted using PubMed, Cochrane Library, Ovid, Embase, Wanfang and China National Knowledge Infrastructure (CNKI) databases, to identify studies. Statistical analyses were conducted in STATA version 11.0 (Stata Corporation, College station, TX, USA). A total of 12 publications were included in this meta-analysis. The results of this meta-analysis suggested that miR-146a rs2910164 was associated with an increased risk of HCC (OR = 1.09, 95% CI = 1.00-1.19). In sensitivity analysis, the result was still positive when excluding the studies without HWE (OR = 1.12, 95% CI = 1.01-1.23). In conclusion, this meta-analysis suggested a significant association between miR-146a rs2910164 polymorphism and HCC risk.
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Single nucleotide polymorphism in miRNAs can alter its expression, thus can lead to the development of cancers. Many studies have explored the association between miR-146a rs2910164 (G>C) polymorphism and hepatocellular carcinoma (HCC) risk, but the results remains inconsistent. So, we performed this pooled analyses in order to get a precise result.Odds ratios (OR) with 95% confidence intervals (CI), calculated by STATA software, was used to determine whether miR-146a rs2910164 polymorphism contributes to the risk of HCC. A comprehensive literature search was conducted on PubMed, Embase, Web of Science, and China National Knowledge Infrastructure up to May 30, 2016.A total of 14 studies including 5921 cases and 7005 controls were included in this meta-analysis. When all the eligible studies were pooled into this meta-analysis, the miR-146a rs2910164 was associated with a decreased risk of hepatocellular carcinoma (OR=0.90; 95% CI=0.82-0.98, P=0.01, allele model).Our meta-analysis supports that the miR-146a rs2910164 polymorphism contributes to the risk of HCC from currently available evidence.
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The prognostic significance of O6-methylguanine-DNA methyltransferase (MGMT) promoter status for survival of patients with malignant gliomas remains controversial. Thus, the meta-analysis was performed in order to identify the impact of MGMT expression on prognosis of malignant gliomas.An extensive literature search for relevant studies was conducted on PubMed, Embase, Web of Science, Cochrane Library, and CBM databases. Version 12.0 STATA software was used for the current meta-analysis. Hazard ratios (HRs) with their corresponding 95% confidence interval (95% CI) were also calculated to clarify the correlation between MGMT expression and the prognosis of malignant gliomas.Final analysis of 2,377 malignant gliomas patients from 32 clinical studies was performed. The meta-analysis results show that MGMT promoter group and unmethylated MGMT group has a significant difference (all P < 0.01). Combined HR of MGMT suggests that the methylated MGMT group has a longer overall survival than the unmethylated MGMT group (P < 0.01), but the Asians don't present a difference between the two groups.The meta-analysis study shows that the elevated MGMT promoter group may have a better prognosis in malignant gliomas patients, but the Asians don't have a better prognosis.
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To investigate the relationship between obesity and disease-free survival (DFS) and overall survival (OS) of triple-negative breast cancer.Citations were searched in PubMed, Cochrane Library, and Web of Science. Random effect model meta-analysis was conducted by using Revman software version 5.0, and publication bias was evaluated by creating Egger regression with STATA software version 12.Nine studies (4412 patients) were included for DFS meta-analysis, 8 studies (4392 patients) include for OS meta-analysis. There were no statistical significances between obesity with DFS (P = .60) and OS (P = .71) in triple-negative breast cancer (TNBC) patients.Obesity has no impact on DFS and OS in patients with TNBC.
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