prognostic model

预后模型
  • 文章类型: Journal Article
    胎儿生长受限与围产期发病率和死亡率相关。早期识别具有高危胎儿的妇女可以减少围产期不良结局。
    为了评估预测胎儿生长受限和出生体重的现有模型的预测性能,如果需要的话,使用个体参与者数据开发和验证新的多变量模型。
    国际妊娠并发症预测网络中队列的个体参与者数据荟萃分析,决策曲线分析和卫生经济学分析。
    孕妇预订。现有模型的外部验证(9个队列,441,415次怀孕);国际妊娠并发症预测模型的开发和验证(4个队列,237,228次怀孕)。
    产妇临床特征,生化和超声标记。
    胎儿生长受限定义为出生体重<10分,根据胎龄和死胎进行调整,新生儿死亡或分娩前32周出生体重。
    首先,我们使用个体参与者数据荟萃分析对现有模型进行了外部验证.如果需要,我们使用随机截距回归模型开发并验证了新的国际妊娠并发症预测模型,并对变量选择进行了反向剔除,并进行了内部-外部交叉验证.我们估计了具体研究的表现(c统计量,标定斜率,对每个模型进行大范围校准),并使用随机效应荟萃分析进行汇总。使用τ2和95%预测区间量化异质性。我们使用决策曲线分析评估胎儿生长受限模型的临床实用性,和卫生经济学分析基于国家卫生与护理卓越研究所2008模型。
    在119个已发布的模型中,可以验证一个出生体重模型(Poon)。根据我们的定义,没有报道胎儿生长受限。在所有队列中,Poon模型具有良好的汇总校准斜率0.93(95%置信区间0.90至0.96),略有过拟合,平均低估出生体重90.4g(95%置信区间37.9g至142.9g)。新开发的国际妊娠并发症预测-胎儿生长受限模型包括产妇年龄,高度,奇偶校验,吸烟状况,种族,和任何高血压病史,先兆子痫,先前的死产或小于胎龄的婴儿和分娩时的胎龄。这允许以分娩时假定的胎龄范围为条件的预测。合并的表观c统计量和校准为0.96(95%置信区间0.51至1.0),和0.95(95%置信区间0.67至1.23),分别。该模型显示,预测概率阈值在1%到90%之间,净收益为正。除了国际妊娠并发症预测-胎儿生长受限模型中的预测因子外,国际妊娠并发症预测-出生体重模型包括孕妇体重,糖尿病史和受孕方式。内部-外部交叉验证队列的平均校准斜率为1.00(95%置信区间0.78至1.23),没有过度拟合的证据。出生体重平均被低估9.7g(95%置信区间-154.3g至173.8g)。
    由于结果定义的差异,我们无法从外部验证大多数已发布的模型。我们的国际妊娠并发症预测-胎儿生长受限模型的内部-外部交叉验证受到纳入队列中事件少的限制。使用已发布的国家健康与护理卓越研究所2008模型进行的经济评估可能无法反映当前的做法,由于数据匮乏,无法进行全面的经济评估。
    国际妊娠并发症预测模型的性能需要在常规实践中进行评估,它们对决策和临床结果的影响需要评估。
    妊娠并发症的国际预测-胎儿生长受限和妊娠并发症的国际预测-出生体重模型可准确预测分娩时各种假定胎龄的胎儿生长受限和出生体重。这些可用于在预订时对风险状态进行分层,计划监控和管理。
    本研究注册为PROSPEROCRD42011135045。
    该奖项由美国国家卫生与护理研究所(NIHR)卫生技术评估计划(NIHR奖编号:17/148/07)资助,并在《卫生技术评估》中全文发布。28号14.有关更多奖项信息,请参阅NIHR资助和奖励网站。
    十个婴儿中就有一个出生时的年龄比他们小。三分之一这样的小婴儿被认为是“生长受限”,因为他们有并发症,如在子宫内死亡(死产)或出生后(新生儿死亡),脑瘫,或者需要长期住院。当胎儿怀疑生长受限时,他们被密切监测,并经常提前交付,以避免并发症。因此,重要的是,我们及早发现生长受限的婴儿,以便计划护理。我们的目标是提供对母亲生育生长受限婴儿的机会的个性化和准确估计,并预测婴儿在怀孕不同时间点分娩时的体重。要做到这一点,首先,我们测试了现有风险计算器(“预测模型”)在预测生长限制和出生体重方面的准确性。然后,我们开发了新的风险计算器,并研究了它们的临床和经济效益。我们通过在我们的大型数据库库(国际妊娠并发症预测)中访问单个孕妇及其婴儿的数据来做到这一点。已发布的风险计算器对生长限制有各种定义,没有人使用我们的定义来预测生长受限婴儿的机会。有人预测婴儿的出生体重。这个风险计算器表现很好,我们开发了两种新的风险计算器来预测生长受限的婴儿(国际妊娠并发症预测-胎儿生长受限)和出生体重(国际妊娠并发症预测-出生体重)。两个计算器都准确地预测了婴儿出生时生长受限的机会,和它的出生体重。出生体重低于9.7g。在预测低风险和高风险的两个母亲中,计算器表现良好。需要进一步的研究来确定在实践中使用这些计算器的影响,以及在实践中实施它们的挑战。国际妊娠并发症预测-胎儿生长受限和国际妊娠并发症预测-出生体重风险计算器都将告知医疗保健专业人员,并使父母能够就监测和分娩时机做出明智的决定。
    UNASSIGNED: Fetal growth restriction is associated with perinatal morbidity and mortality. Early identification of women having at-risk fetuses can reduce perinatal adverse outcomes.
    UNASSIGNED: To assess the predictive performance of existing models predicting fetal growth restriction and birthweight, and if needed, to develop and validate new multivariable models using individual participant data.
    UNASSIGNED: Individual participant data meta-analyses of cohorts in International Prediction of Pregnancy Complications network, decision curve analysis and health economics analysis.
    UNASSIGNED: Pregnant women at booking. External validation of existing models (9 cohorts, 441,415 pregnancies); International Prediction of Pregnancy Complications model development and validation (4 cohorts, 237,228 pregnancies).
    UNASSIGNED: Maternal clinical characteristics, biochemical and ultrasound markers.
    UNASSIGNED: fetal growth restriction defined as birthweight <10th centile adjusted for gestational age and with stillbirth, neonatal death or delivery before 32 weeks\' gestation birthweight.
    UNASSIGNED: First, we externally validated existing models using individual participant data meta-analysis. If needed, we developed and validated new International Prediction of Pregnancy Complications models using random-intercept regression models with backward elimination for variable selection and undertook internal-external cross-validation. We estimated the study-specific performance (c-statistic, calibration slope, calibration-in-the-large) for each model and pooled using random-effects meta-analysis. Heterogeneity was quantified using τ2 and 95% prediction intervals. We assessed the clinical utility of the fetal growth restriction model using decision curve analysis, and health economics analysis based on National Institute for Health and Care Excellence 2008 model.
    UNASSIGNED: Of the 119 published models, one birthweight model (Poon) could be validated. None reported fetal growth restriction using our definition. Across all cohorts, the Poon model had good summary calibration slope of 0.93 (95% confidence interval 0.90 to 0.96) with slight overfitting, and underpredicted birthweight by 90.4 g on average (95% confidence interval 37.9 g to 142.9 g). The newly developed International Prediction of Pregnancy Complications-fetal growth restriction model included maternal age, height, parity, smoking status, ethnicity, and any history of hypertension, pre-eclampsia, previous stillbirth or small for gestational age baby and gestational age at delivery. This allowed predictions conditional on a range of assumed gestational ages at delivery. The pooled apparent c-statistic and calibration were 0.96 (95% confidence interval 0.51 to 1.0), and 0.95 (95% confidence interval 0.67 to 1.23), respectively. The model showed positive net benefit for predicted probability thresholds between 1% and 90%. In addition to the predictors in the International Prediction of Pregnancy Complications-fetal growth restriction model, the International Prediction of Pregnancy Complications-birthweight model included maternal weight, history of diabetes and mode of conception. Average calibration slope across cohorts in the internal-external cross-validation was 1.00 (95% confidence interval 0.78 to 1.23) with no evidence of overfitting. Birthweight was underestimated by 9.7 g on average (95% confidence interval -154.3 g to 173.8 g).
    UNASSIGNED: We could not externally validate most of the published models due to variations in the definitions of outcomes. Internal-external cross-validation of our International Prediction of Pregnancy Complications-fetal growth restriction model was limited by the paucity of events in the included cohorts. The economic evaluation using the published National Institute for Health and Care Excellence 2008 model may not reflect current practice, and full economic evaluation was not possible due to paucity of data.
    UNASSIGNED: International Prediction of Pregnancy Complications models\' performance needs to be assessed in routine practice, and their impact on decision-making and clinical outcomes needs evaluation.
    UNASSIGNED: The International Prediction of Pregnancy Complications-fetal growth restriction and International Prediction of Pregnancy Complications-birthweight models accurately predict fetal growth restriction and birthweight for various assumed gestational ages at delivery. These can be used to stratify the risk status at booking, plan monitoring and management.
    UNASSIGNED: This study is registered as PROSPERO CRD42019135045.
    UNASSIGNED: This award was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: 17/148/07) and is published in full in Health Technology Assessment; Vol. 28, No. 14. See the NIHR Funding and Awards website for further award information.
    One in ten babies is born small for their age. A third of such small babies are considered to be ‘growth-restricted’ as they have complications such as dying in the womb (stillbirth) or after birth (newborn death), cerebral palsy, or needing long stays in hospital. When growth restriction is suspected in fetuses, they are closely monitored and often delivered early to avoid complications. Hence, it is important that we identify growth-restricted babies early to plan care. Our goal was to provide personalised and accurate estimates of the mother’s chances of having a growth-restricted baby and predict the baby’s weight if delivered at various time points in pregnancy. To do so, first we tested how accurate existing risk calculators (‘prediction models’) were in predicting growth restriction and birthweight. We then developed new risk-calculators and studied their clinical and economic benefits. We did so by accessing the data from individual pregnant women and their babies in our large database library (International Prediction of Pregnancy Complications). Published risk-calculators had various definitions of growth restriction and none predicted the chances of having a growth-restricted baby using our definition. One predicted baby’s birthweight. This risk-calculator performed well, but underpredicted the birthweight by up to 143 g. We developed two new risk-calculators to predict growth-restricted babies (International Prediction of Pregnancy Complications-fetal growth restriction) and birthweight (International Prediction of Pregnancy Complications-birthweight). Both calculators accurately predicted the chances of the baby being born with growth restriction, and its birthweight. The birthweight was underpredicted by <9.7 g. The calculators performed well in both mothers predicted to be low and high risk. Further research is needed to determine the impact of using these calculators in practice, and challenges to implementing them in practice. Both International Prediction of Pregnancy Complications-fetal growth restriction and International Prediction of Pregnancy Complications-birthweight risk calculators will inform healthcare professionals and empower parents make informed decisions on monitoring and timing of delivery.
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  • 文章类型: Journal Article
    背景:脓毒症对住院患者构成严重威胁,特别是那些在重症监护病房(ICU)。快速识别脓毒症对于提高生存率至关重要。机器学习技术提供优于传统方法的预测结果。本研究旨在使用基于Stacking的Meta-分类器从MIMIC-III数据库中预测脓毒症-3患者的30天死亡风险,建立一种预后模型。
    方法:分析了4,240例脓毒症-3患者的队列,783人死亡30天,3,457人存活。使用特征排序方法选择了15种生物标志物,包括极端梯度提升(XGBoost),随机森林,和额外的树,和Logistic回归(LR)模型被用来评估他们的个人可预测性与五倍交叉验证方法的预测验证。使用SMOTE-TOMEKLINK技术平衡数据集,基于堆叠的元分类器用于30天死亡率预测。进行了SHapley加法解释分析,以解释模型的预测。
    结果:使用LR分类器,模型的曲线下面积或AUC评分为0.99.列线图提供了对生物标志物意义的临床见解。堆叠的元学习者,LR分类器表现出最佳性能,准确率为95.52%,95.79%精度,95.52%召回,93.65%特异性,和95.60%的F1分数。
    结论:结合列线图,提出的堆叠分类器模型可有效预测脓毒症患者的30天死亡率.这种方法有望在脓毒症病例的早期干预和改善预后。
    BACKGROUND: Sepsis poses a critical threat to hospitalized patients, particularly those in the Intensive Care Unit (ICU). Rapid identification of Sepsis is crucial for improving survival rates. Machine learning techniques offer advantages over traditional methods for predicting outcomes. This study aimed to develop a prognostic model using a Stacking-based Meta-Classifier to predict 30-day mortality risks in Sepsis-3 patients from the MIMIC-III database.
    METHODS: A cohort of 4,240 Sepsis-3 patients was analyzed, with 783 experiencing 30-day mortality and 3,457 surviving. Fifteen biomarkers were selected using feature ranking methods, including Extreme Gradient Boosting (XGBoost), Random Forest, and Extra Tree, and the Logistic Regression (LR) model was used to assess their individual predictability with a fivefold cross-validation approach for the validation of the prediction. The dataset was balanced using the SMOTE-TOMEK LINK technique, and a stacking-based meta-classifier was used for 30-day mortality prediction. The SHapley Additive explanations analysis was performed to explain the model\'s prediction.
    RESULTS: Using the LR classifier, the model achieved an area under the curve or AUC score of 0.99. A nomogram provided clinical insights into the biomarkers\' significance. The stacked meta-learner, LR classifier exhibited the best performance with 95.52% accuracy, 95.79% precision, 95.52% recall, 93.65% specificity, and a 95.60% F1-score.
    CONCLUSIONS: In conjunction with the nomogram, the proposed stacking classifier model effectively predicted 30-day mortality in Sepsis patients. This approach holds promise for early intervention and improved outcomes in treating Sepsis cases.
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  • 文章类型: Journal Article
    目的:通过单细胞RNA测序(scRNA-seq)和RNA测序(RNA-seq)数据确定细胞凋亡相关基因(CRGs)与肝细胞癌(HCC)预后之间的联系。相关数据从GEO和TCGA数据库下载.通过scRNA-seq数据库中HCC患者和正常对照(NC)之间差异表达基因(DEG)的重叠来过滤差异表达的CRGs(DE-CRGs)。高和低CRG活性细胞之间的DE-CRG,和TCGA数据库中HCC患者和NC之间的DEG。
    结果:在HCC中确定了33个DE-CRGs。使用六个生存相关基因(SRGs)(NDRG2,CYB5A,SOX4,MYC,TM4SF1和IFI27)通过单变量Cox回归分析和LASSO。通过列线图和接收器工作特性曲线验证了模型的预测能力。研究已将肿瘤免疫功能障碍和排斥作为检查PM对免疫异质性影响的手段。巨噬细胞M0水平在高危组(HRG)和低危组(LRG)之间有显著差异,和更高的巨噬细胞水平与更不利的预后有关。药物敏感性数据表明,HRG和LRG之间伊达比星和雷帕霉素的半数最大药物抑制浓度存在实质性差异。通过使用公共数据集和我们的队列在蛋白质和mRNA水平上验证了该模型。
    结论:使用6个SRG(NDRG2,CYB5A,SOX4,MYC,TM4SF1和IFI27)是通过生物信息学研究开发的。该模型可能为评估和管理HCC提供新的视角。
    OBJECTIVE: To ascertain the connection between cuproptosis-related genes (CRGs) and the prognosis of hepatocellular carcinoma (HCC) via single-cell RNA sequencing (scRNA-seq) and RNA sequencing (RNA-seq) data, relevant data were downloaded from the GEO and TCGA databases. The differentially expressed CRGs (DE-CRGs) were filtered by the overlaps in differentially expressed genes (DEGs) between HCC patients and normal controls (NCs) in the scRNA-seq database, DE-CRGs between high- and low-CRG-activity cells, and DEGs between HCC patients and NCs in the TCGA database.
    RESULTS: Thirty-three DE-CRGs in HCC were identified. A prognostic model (PM) was created employing six survival-related genes (SRGs) (NDRG2, CYB5A, SOX4, MYC, TM4SF1, and IFI27) via univariate Cox regression analysis and LASSO. The predictive ability of the model was validated via a nomogram and receiver operating characteristic curves. Research has employed tumor immune dysfunction and exclusion as a means to examine the influence of PM on immunological heterogeneity. Macrophage M0 levels were significantly different between the high-risk group (HRG) and the low-risk group (LRG), and a greater macrophage level was linked to a more unfavorable prognosis. The drug sensitivity data indicated a substantial difference in the half-maximal drug-suppressive concentrations of idarubicin and rapamycin between the HRG and the LRG. The model was verified by employing public datasets and our cohort at both the protein and mRNA levels.
    CONCLUSIONS: A PM using 6 SRGs (NDRG2, CYB5A, SOX4, MYC, TM4SF1, and IFI27) was developed via bioinformatics research. This model might provide a fresh perspective for assessing and managing HCC.
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  • 文章类型: Journal Article
    背景:LUAD和TB之间存在关联,结核病会增加肺腺癌的风险。然而,结核病在肺腺癌发展中的作用尚未明确.方法:获得来自TB和LUAD肺样本的DEGs以鉴定TB-LUAD共有的DEGs。对TCGA队列进行共识聚类以表征TB转录组衍生的肺腺癌亚型的独特变化。基于TB特征构建预后模型以探索亚组的表征。最后,进行了潜在标志物的实验验证和单细胞分析。结果:我们表征了三种具有独特临床特征的分子亚型,细胞浸润,和途径改变表现。我们在六个队列中构建并验证了与结核病相关的签名。与TB相关的签名具有特征性的改变,可作为免疫治疗反应的有效预测指标。通过RT-qPCR验证预后相关的新标志物KRT80、C1QTNF6和TRPA1。KRT80与肺腺癌疾病进展之间的关联在大容量转录组和单细胞转录组中得到证实。结论:第一次,我们对结核病特征进行了全面的生物信息学分析,以确定肺腺癌的亚型.TB相关标签预测预后并鉴定潜在标志物。该结果揭示了肺结核在肺腺癌进展中的潜在致病关联。
    Background: There is an association between LUAD and TB, and TB increases the risk of lung adenocarcinogenesis. However, the role of TB in the development of lung adenocarcinoma has not been clarified. Methods: DEGs from TB and LUAD lung samples were obtained to identify TB-LUAD-shared DEGs. Consensus Clustering was performed on the TCGA cohort to characterize unique changes in TB transcriptome-derived lung adenocarcinoma subtypes. Prognostic models were constructed based on TB signatures to explore the characterization of subgroups. Finally, experimental validation and single-cell analysis of potential markers were performed. Results: We characterized three molecular subtypes with unique clinical features, cellular infiltration, and pathway change manifestations. We constructed and validated TB-related Signature in six cohorts. TB-related Signature has characteristic alterations, and can be used as an effective predictor of immunotherapy response. Prognostically relevant novel markers KRT80, C1QTNF6, and TRPA1 were validated by RT-qPCR. The association between KRT80 and lung adenocarcinoma disease progression was verified in Bulk transcriptome and single-cell transcriptome. Conclusion: For the first time, a comprehensive bioinformatics analysis of tuberculosis signatures was used to identify subtypes of lung adenocarcinoma. The TB-related Signature predicted prognosis and identified potential markers. This result reveals a potential pathogenic association of tuberculosis in the progression of lung adenocarcinoma.
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  • 文章类型: Journal Article
    结直肠癌(CRC)的肿瘤微环境(TME)主要由免疫细胞组成,基质细胞,肿瘤细胞,以及细胞外基质(ECM),具有举足轻重的地位。ECM影响癌症进展,但其在CRC中的调控作用和预测潜力尚不完全清楚。
    我们分析了来自CRC肿瘤和配对正常组织的转录组以研究ECM特征。通过功能富集分析检查上调的ECM成分,单细胞测序确定了产生胶原蛋白的细胞类型,监管者,和分泌因子。进行转录因子分析和细胞-细胞相互作用研究以鉴定ECM变化的潜在调节因子。此外,使用TCGA-CRC队列数据建立了预后模型,专注于上调的核心ECM组件。
    BulkRNA-seq分析揭示了肿瘤中独特的ECM模式,ECM丰度和组成与患者生存率显着相关。上调的ECM成分与各种癌症相关途径有关。成纤维细胞和非成纤维细胞的相互作用在形成TME中是至关重要的。确定的关键潜在调节因子包括ZNF469、PRRX2、TWIST1和AEBP1。基于五个ECM基因(THBS3,LAMB3,ESM1,SPRX,COL9A3)与免疫抑制和肿瘤血管生成密切相关。
    ECM成分参与各种细胞间相互作用,并与肿瘤发展和不良生存结果相关。ECM预后模型组件可能是结直肠癌新型治疗干预的潜在目标。
    UNASSIGNED: The tumor microenvironment (TME) of colorectal cancer (CRC) mainly comprises immune cells, stromal cells, tumor cells, as well as the extracellular matrix (ECM), which holds a pivotal position. The ECM affects cancer progression, but its regulatory roles and predictive potential in CRC are not fully understood.
    UNASSIGNED: We analyzed transcriptomes from CRC tumors and paired normal tissues to study ECM features. Up-regulated ECM components were examined through functional enrichment analysis, and single-cell sequencing identified cell types producing collagen, regulators, and secreted factors. Transcription factor analysis and cell-cell interaction studies were conducted to identify potential regulators of ECM changes. Additionally, a prognostic model was developed using TCGA-CRC cohort data, focusing on up-regulated core ECM components.
    UNASSIGNED: Bulk RNA-seq analysis revealed a unique ECM pattern in tumors, with ECM abundance and composition significantly related to patient survival. Up-regulated ECM components were linked to various cancer-related pathways. Fibroblasts and non-fibroblasts interactions were crucial in forming the TME. Key potential regulators identified included ZNF469, PRRX2, TWIST1, and AEBP1. A prognostic model based on five ECM genes (THBS3, LAMB3, ESM1, SPRX, COL9A3) demonstrated strong associations with immune suppression and tumor angiogenesis.
    UNASSIGNED: The ECM components were involved in various cell-cell interactions and correlated with tumor development and poor survival outcomes. The ECM prognostic model components could be potential targets for novel therapeutic interventions in colorectal cancer.
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  • 文章类型: Journal Article
    免疫细胞浸润和肿瘤相关免疫分子在肿瘤发生和进展中起着关键作用。免疫相互作用对肾透明细胞癌(ccRCC)的分子特征和预后的影响尚不清楚。将机器学习算法应用于来自癌症基因组图谱数据库的转录组数据,以确定ccRCC患者的免疫表型和免疫学特征。这些算法包括单样品基因集富集分析和细胞类型鉴定。利用生物信息学技术,我们研究了参与ccRCC免疫相互作用的免疫相关基因(IRGs)的预后潜力和调控网络.15个IRG(CCL7,CHGA,CMA1,CRABP2,IFNE,ISG15,NPR3,PDIA2,PGLYRP2,PLA2G2A,SAA1,TEK,TGFA,TNFSF14和UCN2)被鉴定为与总生存期相关的预后IRG,并用于构建预后模型。1年受试者工作特征曲线下面积为0.927;3年,0.822;和5年,0.717,表明良好的预测准确性。发现分子调节网络控制ccRCC中的免疫相互作用。此外,我们建立了一个包含模型和具有高预后潜力的临床特征的列线图.通过系统地研究复杂的监管机制,分子特征,和ccRCC免疫相互作用的预后潜力,我们为理解ccRCC的分子机制和确定新的预后标志物和治疗靶点提供了一个重要的框架,为未来的研究提供了一个重要的框架.
    Immune cell infiltration and tumor-related immune molecules play key roles in tumorigenesis and tumor progression. The influence of immune interactions on the molecular characteristics and prognosis of clear cell renal cell carcinoma (ccRCC) remains unclear. A machine learning algorithm was applied to the transcriptome data from The Cancer Genome Atlas database to determine the immunophenotypic and immunological characteristics of ccRCC patients. These algorithms included single-sample gene set enrichment analyses and cell type identification. Using bioinformatics techniques, we examined the prognostic potential and regulatory networks of immune-related genes (IRGs) involved in ccRCC immune interactions. Fifteen IRGs (CCL7, CHGA, CMA1, CRABP2, IFNE, ISG15, NPR3, PDIA2, PGLYRP2, PLA2G2A, SAA1, TEK, TGFA, TNFSF14, and UCN2) were identified as prognostic IRGs associated with overall survival and were used to construct a prognostic model. The area under the receiver operating characteristic curve at 1 year was 0.927; 3 years, 0.822; and 5 years, 0.717, indicating good predictive accuracy. Molecular regulatory networks were found to govern immune interactions in ccRCC. Additionally, we developed a nomogram containing the model and clinical characteristics with high prognostic potential. By systematically examining the sophisticated regulatory mechanisms, molecular characteristics, and prognostic potential of ccRCC immune interactions, we provided an important framework for understanding the molecular mechanisms of ccRCC and identifying new prognostic markers and therapeutic targets for future research.
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  • 文章类型: Journal Article
    失调的超级增强子(SE)导致驱动癌症起始和进展的异常转录。SE已被证明是跨多种人类癌症的新型有前景的诊断/预后生物标志物和治疗靶标。这里,我们试图开发一种源自SE相关基因的头颈部鳞状细胞癌(HNSCC)的新预后特征.通过ROSE算法从HNSCC细胞系中的H3K27acChIP-seq数据集中鉴定SE,并进一步对SE相关基因进行定位和功能注释。通过差异表达基因(DEGs)和Cox回归分析,筛选了133个具有mRNA上调和预后意义的SE相关基因。使用三个独立的HNSCC队列(TCGA-HNSC数据集作为训练队列,通过机器学习方法对这些候选人进行了预后模型构建。GSE41613和GSE42743作为验证队列)。在数十种预后模型中,随机生存森林算法(RSF)具有最佳性能,最高平均一致性指数(C指数)证明了这一点。整合该SE相关基因标签(SEAGS)加上肿瘤大小的预后列线图显示出令人满意的预测能力和出色的校准和辨别能力。此外,来自SEARG的WNT7A被验证为推定的癌基因,其通过SE转录激活以促进恶性表型。BRD4或EP300抑制剂对SE功能的药理学破坏显著损害了HNSCC患者来源的异种移植模型中的肿瘤生长并减少了WNT7A表达。一起来看,我们的结果建立了一个小说,稳健的SE衍生的HNSCC预后模型,并建议SE的翻译潜力作为HNSCC的有希望的治疗靶标。
    Dysregulated super-enhancer (SE) results in aberrant transcription that drives cancer initiation and progression. SEs have been demonstrated as novel promising diagnostic/prognostic biomarkers and therapeutic targets across multiple human cancers. Here, we sought to develop a novel prognostic signature derived from SE-associated genes for head and neck squamous cell carcinoma (HNSCC). SE was identified from H3K27ac ChIP-seq datasets in HNSCC cell lines by ROSE algorithm and SE-associated genes were further mapped and functionally annotated. A total number of 133 SE-associated genes with mRNA upregulation and prognostic significance was screened via differentially-expressed genes (DEGs) and Cox regression analyses. These candidates were subjected for prognostic model constructions by machine learning approaches using three independent HNSCC cohorts (TCGA-HNSC dataset as training cohort, GSE41613 and GSE42743 as validation cohorts). Among dozens of prognostic models, the random survival forest algorithm (RSF) stood out with the best performance as evidenced by the highest average concordance index (C-index). A prognostic nomogram integrating this SE-associated gene signature (SEAGS) plus tumor size demonstrated satisfactory predictive power and excellent calibration and discrimination. Moreover, WNT7A from SEARG was validated as a putative oncogene with transcriptional activation by SE to promote malignant phenotypes. Pharmacological disruption of SE functions by BRD4 or EP300 inhibitor significantly impaired tumor growth and diminished WNT7A expression in a HNSCC patient-derived xenograft model. Taken together, our results establish a novel, robust SE-derived prognostic model for HNSCC and suggest the translational potentials of SEs as promising therapeutic targets for HNSCC.
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  • 文章类型: Journal Article
    背景:CCA预后不良。不同的解剖亚型具有不同的临床特征。手术选择,和预测,这可能会影响根治性切除术后的生存结局。除了CCA本身的恶性,临床分期和治疗方法是影响生存率的主要因素。本研究旨在更新基于不同解剖位置的CCA预后更可靠的预测模型。
    方法:共1172例CCA患者(305iCCA,467pCCA,在2015年至2022年期间接受手术切除的400dCCA)被纳入分析。分析中包含的协变量是年龄,性别,肿瘤直径,分化等级,T级,N级,M阶段,神经入侵,癌栓,乙型肝炎或胆道结石病史,并接受辅助化疗。数据被随机分为训练(80%)和验证队列(20%)。
    结果:我们开发了敏感模型的列线图,并计算了不同构建的预后生存模型的一致性指数。同时,我们验证了列线图模型的有效性,并通过决策曲线分析(DCA)和内部队列验证与TNM系统进行了比较.在任何给定的iCCA阈值下,列线图模型都比TNM系统具有更好的净效益,pCCA,和dCCA,不管他们的位置。
    结论:我们根据肿瘤位置的不同,更新了接受根治性切除术的CCA患者OS的预后模型。该模型可以有效地预测OS,并具有促进个人临床决策的潜力。
    BACKGROUND: CCA has a poor prognosis. Different anatomical subtypes are characterized by distinct clinical features, surgical options, and prognoses, which can potentially impact survival outcomes following radical resection. In addition to the malignancy of CCA itself, clinical staging and treatment methods are the main factors that can affect survival. This study aims to update a more reliable prediction model for the prognosis of CCA based on different anatomical locations.
    METHODS: A total of 1172 CCA patients (305 iCCA, 467 pCCA, and 400 dCCA) who underwent surgical resection between 2015 and 2022 were included in the analysis. The covariates included in the analysis were age, sex, tumor diameter, differentiation grade, T stage, N stage, M stage, neural invasion, cancer thrombus, history of hepatitis B or biliary calculi, and receipt of adjuvant chemotherapy. The data were randomly divided into training (80 %) and validation cohort (20 %).
    RESULTS: We developed a nomogram of the sensitive model and calculated concordance indices of different constructed prognostic survival models. Meanwhile, we validated the effectiveness of the nomogram model and compared it with the TNM system through decision curve analysis (DCA) and internal cohort validation. The nomogram model had a better net benefit than the TNM system at any given threshold for iCCA, pCCA, and dCCA, regardless of their location.
    CONCLUSIONS: We have updated the prognostic model for OS in CCA patients who underwent radical resection according to the different tumor locations. This model can effectively predict OS and has the potential to facilitate individual clinical decision-making.
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  • 文章类型: Journal Article
    2022年12月初,中国政府对疫情防控措施进行了重大调整。基于这一时期的流行病感染数据和感染患者的实验室制造商可能有助于COVID-19患者的管理和预后。
    纳入2022年12月住院的COVID-19患者。采用Logistic回归分析筛选与COVID-19患者死亡相关的重要因素。通过LASSO和逐步逻辑回归方法筛选候选变量,并用于构建逻辑回归作为预后模型。通过区别对待来评估模型的性能,校准,和净收益。
    888名患者符合资格,包括715名幸存者和173名全因死亡。与COVID-19患者死亡率显著相关的因素是:乳酸脱氢酶(LDH),白蛋白(ALB),降钙素原(PCT),年龄,吸烟史,恶性肿瘤病史,高密度脂蛋白胆固醇(HDL-C),乳酸,疫苗状态和尿素。888例合格患者中有335例被定义为ICU病例。七个预测因子,包括中性粒细胞与淋巴细胞的比率,D-二聚体,PCT,C反应蛋白,ALB,碳酸氢盐,LDH,最后选择建立预后模型并生成列线图。训练和验证队列中受试者工作曲线的曲线下面积分别为0.842和0.853。在校准方面,预测概率和观察到的比例显示出很高的一致性。决策曲线分析表明,在0.10-0.85的风险阈值中,临床净收益很高。通过此列线图确定了81.220的临界值,以预测COVID-19患者的预后。
    在这项研究中建立的实验室模型显示出很高的区分度,校准,和净收益。它可用于早期识别COVID-19重症患者。
    UNASSIGNED: At the beginning of December 2022, the Chinese government made major adjustments to the epidemic prevention and control measures. The epidemic infection data and laboratory makers for infected patients based on this period may help with the management and prognostication of COVID-19 patients.
    UNASSIGNED: The COVID-19 patients hospitalized during December 2022 were enrolled. Logistic regression analysis was used to screen significant factors associated with mortality in patients with COVID-19. Candidate variables were screened by LASSO and stepwise logistic regression methods and were used to construct logistic regression as the prognostic model. The performance of the models was evaluated by discrimination, calibration, and net benefit.
    UNASSIGNED: 888 patients were eligible, consisting of 715 survivors and 173 all-cause deaths. Factors significantly associated with mortality in COVID-19 patients were: lactate dehydrogenase (LDH), albumin (ALB), procalcitonin (PCT), age, smoking history, malignancy history, high density lipoprotein cholesterol (HDL-C), lactate, vaccine status and urea. 335 of the 888 eligible patients were defined as ICU cases. Seven predictors, including neutrophil to lymphocyte ratio, D-dimer, PCT, C-reactive protein, ALB, bicarbonate, and LDH, were finally selected to establish the prognostic model and generate a nomogram. The area under the curve of the receiver operating curve in the training and validation cohorts were respectively 0.842 and 0.853. In terms of calibration, predicted probabilities and observed proportions displayed high agreements. Decision curve analysis showed high clinical net benefit in the risk threshold of 0.10-0.85. A cutoff value of 81.220 was determined to predict the outcome of COVID-19 patients via this nomogram.
    UNASSIGNED: The laboratory model established in this study showed high discrimination, calibration, and net benefit. It may be used for early identification of severe patients with COVID-19.
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  • 文章类型: Journal Article
    背景:SEPT9是一种关键的细胞骨架GTP酶,可调节包括有丝分裂和胞质分裂在内的多种生物学过程。虽然先前的研究涉及SEPT9与肿瘤发生和发展有关,但尚未进行全面的泛癌症分析。本研究旨在系统探讨其在癌症筛查中的作用,预后,和治疗,解决这一关键差距。
    方法:包含临床信息的基因和蛋白质表达数据从公共数据库获得,用于泛癌症分析。此外,我们使用来自90例肺鳞癌(LUSC)患者的临床样本,进一步通过实验验证SEPT9的临床意义.此外,分子对接工具用于分析SEPT9蛋白与药物之间的亲和力.
    结果:SEPT9在各种癌症中高表达,其异常表达与遗传变化和表观遗传修饰相关,导致不良临床结果。以LUSC为例,额外的数据集分析和免疫组织化学实验进一步证实了SEPT9基因和蛋白的诊断和预后价值以及临床相关性.功能富集,单细胞表达,和免疫浸润分析显示,SEPT9促进恶性肿瘤进展和调节免疫微环境,使患者受益于免疫疗法。此外,药物敏感性和分子对接分析表明,SEPT9与多种药物的敏感性和耐药性有关,包括Vorinostat和OTS-964。为了利用其在LUSC中的预后和治疗潜力,有丝分裂纺锤体相关预后模型,包括SEPT9、HSF1、ARAP3、KIF20B、FAM83D,TUBB8和几个临床特征,已开发。该模型不仅改善了临床结果预测,而且重塑了免疫微环境,使免疫疗法对LUSC患者更有效。
    结论:这是第一个系统分析SEPT9在癌症中的作用并创新性地将有丝分裂纺锤体相关模型应用于LUSC的研究,充分展示其作为癌症筛查和预后的有价值的生物标志物的潜力,并突出其在促进免疫治疗和化疗中的应用价值,特别是对于LUSC。
    BACKGROUND: SEPT9 is a pivotal cytoskeletal GTPase that regulates diverse biological processes encompassing mitosis and cytokinesis. While previous studies have implicated SEPT9 in tumorigenesis and development; comprehensive pan-cancer analyses have not been performed. This study aims to systematically explore its role in cancer screening, prognosis, and treatment, addressing this critical gap.
    METHODS: Gene and protein expression data containing clinical information were obtained from public databases for pan-cancer analyses. Additionally, clinical samples from 90 patients with lung squamous cell carcinoma (LUSC) were used to further experimentally validate the clinical significance of SEPT9. In addition, the molecular docking tool was used to analyze the affinities between SEPT9 protein and drugs.
    RESULTS: SEPT9 is highly expressed in various cancers, and its aberrant expression correlates with genetic alternations and epigenetic modifications, leading to adverse clinical outcomes. Take LUSC as an example, additional dataset analyses and immunohistochemical experiments further confirm the diagnostic and prognostic values as well as the clinical relevance of the SEPT9 gene and protein. Functional enrichment, single-cell expression, and immune infiltration analyses revealed that SEPT9 promotes malignant tumor progression and modulates the immune microenvironments, enabling patients to benefit from immunotherapy. Moreover, drug sensitivity and molecular docking analyses showed that SEPT9 is associated with the sensitivity and resistance of multiple drugs and has stable binding activity with them, including Vorinostat and OTS-964. To harness its prognostic and therapeutic potential in LUSC, a mitotic spindle-associated prognostic model including SEPT9, HSF1, ARAP3, KIF20B, FAM83D, TUBB8, and several clinical characteristics, was developed. This model not only improves clinical outcome predictions but also reshapes the immune microenvironment, making immunotherapy more effective for LUSC patients.
    CONCLUSIONS: This is the first study to systematically analyze the role of SEPT9 in cancers and innovatively apply the mitotic spindle-associated model to LUSC, fully demonstrating its potential as a valuable biomarker for cancer screening and prognosis, and highlighting its application value in promoting immunotherapy and chemotherapy, particularly for LUSC.
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