Radiogenomics

放射基因组学
  • 文章类型: Journal Article
    了解透明细胞肾细胞癌(ccRCC)的最新进展强调了BAP1基因在其发病机理和预后中的关键作用。虽然vonHippel-Lindau(VHL)突变已经被广泛研究,新出现的证据表明,BAP1和其他基因的突变显著影响患者的预后.有和没有基于CT成像的纹理分析的放射基因组学在预测BAP1突变状态和总体生存结果方面具有希望。然而,需要进行更大队列和标准化成像方案的前瞻性研究,以验证这些发现并将其有效转化为临床实践,为ccRCC的个性化治疗策略铺平了道路。本文就BAP1突变在ccRCC发病机制及预后中的作用进行综述。以及放射基因组学在预测突变状态和临床结局方面的潜力。
    Recent advancements in understanding clear cell renal cell carcinoma (ccRCC) have underscored the critical role of the BAP1 gene in its pathogenesis and prognosis. While the von Hippel-Lindau (VHL) mutation has been extensively studied, emerging evidence suggests that mutations in BAP1 and other genes significantly impact patient outcomes. Radiogenomics with and without texture analysis based on CT imaging holds promise in predicting BAP1 mutation status and overall survival outcomes. However, prospective studies with larger cohorts and standardized imaging protocols are needed to validate these findings and translate them into clinical practice effectively, paving the way for personalized treatment strategies in ccRCC. This review aims to summarize the current knowledge on the role of BAP1 mutation in ccRCC pathogenesis and prognosis, as well as the potential of radiogenomics in predicting mutation status and clinical outcomes.
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  • 文章类型: Journal Article
    从多组学数据中提取预后因素的深度学习工具最近有助于对生存结果进行个性化预测。然而,集成组学-成像-临床数据集的有限规模带来了挑战.这里,我们提出了两种生物学可解释和强大的深度学习架构,用于非小细胞肺癌(NSCLC)患者的生存预测,同时从计算机断层扫描(CT)扫描图像中学习,基因表达数据,和临床信息。拟议的模型集成了患者特定的临床,转录组,和成像数据,并纳入京都基因和基因组百科全书(KEGG)和反应组途径信息,在学习过程中增加生物学知识,以提取预后基因生物标志物和分子通路。虽然在仅130名患者的数据集上进行训练时,这两种模型都可以准确地对高风险和低风险组的患者进行分层,在稀疏自动编码器中引入交叉注意机制显着提高了性能,突出肿瘤区域和NSCLC相关基因作为潜在的生物标志物,因此在从小型成像组学临床样本中学习时提供了显着的方法学进步。
    Deep-learning tools that extract prognostic factors derived from multi-omics data have recently contributed to individualized predictions of survival outcomes. However, the limited size of integrated omics-imaging-clinical datasets poses challenges. Here, we propose two biologically interpretable and robust deep-learning architectures for survival prediction of non-small cell lung cancer (NSCLC) patients, learning simultaneously from computed tomography (CT) scan images, gene expression data, and clinical information. The proposed models integrate patient-specific clinical, transcriptomic, and imaging data and incorporate Kyoto Encyclopedia of Genes and Genomes (KEGG) and Reactome pathway information, adding biological knowledge within the learning process to extract prognostic gene biomarkers and molecular pathways. While both models accurately stratify patients in high- and low-risk groups when trained on a dataset of only 130 patients, introducing a cross-attention mechanism in a sparse autoencoder significantly improves the performance, highlighting tumor regions and NSCLC-related genes as potential biomarkers and thus offering a significant methodological advancement when learning from small imaging-omics-clinical samples.
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  • 文章类型: Journal Article
    背景:放射基因组学是一种新兴的技术,它集成了基因组学和基于医学图像的放射组学,这被认为是实现精准医学的一种有希望的方法。
    目的:本研究的目的是定量分析研究现状,动态趋势,和使用文献计量学方法在放射基因组学领域的进化轨迹。
    方法:从WebofScienceCoreCollection检索到截至2023年发表的相关文献。使用Excel分析年度出版趋势。VOSviewer用于构建关键词共现网络以及国家和机构之间的合作网络。CiteSpace用于引用关键词突发分析和可视化参考时间线。
    结果:共纳入3237篇论文,并以纯文本格式导出。出版物的年度数量呈逐年增长的趋势。中国和美国在这一领域发表的论文最多,在美国被引用次数最多,在荷兰被引用次数最高。关键词突发分析表明,几个关键词,包括“大数据”,“磁共振波谱”,肾细胞癌,\"\"阶段,\"和\"替莫唑胺,“近年来经历了一次引文爆发。时间线视图表明,参考文献可以分为8个簇:低级别神经胶质瘤,肺癌组织学,肺腺癌,乳腺癌,放射性肺损伤,表皮生长因子受体突变,晚期放疗毒性,和人工智能。
    结论:放射基因组学领域越来越受到全世界研究人员的关注,美国和荷兰是最具影响力的国家。探索基于大数据的人工智能方法来预测肿瘤对各种治疗方法的反应是目前该领域的研究热点。
    BACKGROUND: Radiogenomics is an emerging technology that integrates genomics and medical image-based radiomics, which is considered a promising approach toward achieving precision medicine.
    OBJECTIVE: The aim of this study was to quantitatively analyze the research status, dynamic trends, and evolutionary trajectory in the radiogenomics field using bibliometric methods.
    METHODS: The relevant literature published up to 2023 was retrieved from the Web of Science Core Collection. Excel was used to analyze the annual publication trend. VOSviewer was used for constructing the keywords co-occurrence network and the collaboration networks among countries and institutions. CiteSpace was used for citation keywords burst analysis and visualizing the references timeline.
    RESULTS: A total of 3237 papers were included and exported in plain-text format. The annual number of publications showed an increasing annual trend. China and the United States have published the most papers in this field, with the highest number of citations in the United States and the highest average number per item in the Netherlands. Keywords burst analysis revealed that several keywords, including \"big data,\" \"magnetic resonance spectroscopy,\" \"renal cell carcinoma,\" \"stage,\" and \"temozolomide,\" experienced a citation burst in recent years. The timeline views demonstrated that the references can be categorized into 8 clusters: lower-grade glioma, lung cancer histology, lung adenocarcinoma, breast cancer, radiation-induced lung injury, epidermal growth factor receptor mutation, late radiotherapy toxicity, and artificial intelligence.
    CONCLUSIONS: The field of radiogenomics is attracting increasing attention from researchers worldwide, with the United States and the Netherlands being the most influential countries. Exploration of artificial intelligence methods based on big data to predict the response of tumors to various treatment methods represents a hot spot research topic in this field at present.
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  • 文章类型: Journal Article
    多形性胶质母细胞瘤(GBM)是最常见和侵袭性的原发性脑肿瘤。尽管基于替莫唑胺(TMZ)的放化疗可改善GBM患者的总体生存率,它还增加了治疗后磁共振成像(MRI)评估肿瘤进展的假阳性频率.假性进展(PsP)是一种与治疗相关的反应,在MRI上,肿瘤部位或切除边缘的对比增强病变大小增加,影响肿瘤复发。在GBM患者的临床管理中,迫切需要准确可靠地预测GBM进展。临床资料分析表明,PsP患者的总体生存率和无进展生存率均较高。在这项研究中,我们旨在建立一个预后模型,以评估GBM患者接受标准治疗后的肿瘤进展潜能.我们应用字典学习方案从Wake数据集中获得具有PsP或真实肿瘤进展(TTP)的GBM患者的成像特征。基于这些射线照相特征,我们进行了放射基因组学分析,以鉴定显著相关的基因.这些显著相关的基因被用作构建2YS(2年生存率)逻辑回归模型的特征。根据从该模型得到的个体2YS评分将GBM患者分为低生存风险组和高生存风险组。我们使用独立的癌症基因组图谱计划(TCGA)数据集测试了我们的模型,发现2YS评分与患者的总生存期显着相关。我们使用了两组TCGA数据来训练和测试我们的模型。我们的结果表明,来自训练和测试TCGA数据集的基于2YS分数的分类结果与患者的总体生存率显着相关。我们还分析了其他临床因素(性别,年龄,KPS(Karnofsky性能状态),正常细胞比率),并发现这些因素与患者的生存无关或弱相关。总的来说,我们的研究证明了2YS模型在预测GBM患者接受标准治疗后的临床结局方面的有效性和稳健性.
    Glioblastoma multiforme (GBM)is the most common and aggressive primary brain tumor. Although temozolomide (TMZ)-based radiochemotherapy improves overall GBM patients\' survival, it also increases the frequency of false positive post-treatment magnetic resonance imaging (MRI) assessments for tumor progression. Pseudo-progression (PsP) is a treatment-related reaction with an increased contrast-enhancing lesion size at the tumor site or resection margins miming tumor recurrence on MRI. The accurate and reliable prognostication of GBM progression is urgently needed in the clinical management of GBM patients. Clinical data analysis indicates that the patients with PsP had superior overall and progression-free survival rates. In this study, we aimed to develop a prognostic model to evaluate the tumor progression potential of GBM patients following standard therapies. We applied a dictionary learning scheme to obtain imaging features of GBM patients with PsP or true tumor progression (TTP) from the Wake dataset. Based on these radiographic features, we conducted a radiogenomics analysis to identify the significantly associated genes. These significantly associated genes were used as features to construct a 2YS (2-year survival rate) logistic regression model. GBM patients were classified into low- and high-survival risk groups based on the individual 2YS scores derived from this model. We tested our model using an independent The Cancer Genome Atlas Program (TCGA) dataset and found that 2YS scores were significantly associated with the patient\'s overall survival. We used two cohorts of the TCGA data to train and test our model. Our results show that the 2YS scores-based classification results from the training and testing TCGA datasets were significantly associated with the overall survival of patients. We also analyzed the survival prediction ability of other clinical factors (gender, age, KPS (Karnofsky performance status), normal cell ratio) and found that these factors were unrelated or weakly correlated with patients\' survival. Overall, our studies have demonstrated the effectiveness and robustness of the 2YS model in predicting the clinical outcomes of GBM patients after standard therapies.
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  • 文章类型: Journal Article
    动静脉畸形(AVM)是罕见的血管异常,涉及动脉和静脉的紊乱,没有毛细血管介入。在过去的10年里,影像组学和机器学习(ML)模型在分析诊断医学图像方面变得越来越流行。这篇综述的目的是提供目前用于诊断的放射学模型的全面总结,治疗性的,预后,以及AVM管理中的预测性结果。
    根据系统评价和荟萃分析(PRISMA)2020指南的首选报告项目进行了系统文献综述,其中使用以下术语搜索PubMed和Embase数据库:(脑或脑或颅内或中枢神经系统或脊柱或脊柱)和(AVM或动静脉畸形或动静脉畸形)和(放射组学或放射基因组学或机器学习或人工智能或深度学习或计算机辅助检测或计算机辅助预测或计算机辅助治疗决策).计算所有纳入研究的影像组学质量评分(RQS)。
    纳入了13项研究,本质上都是回顾性的。三项研究(23%)涉及AVM诊断和分级,1项研究(8%)衡量治疗反应,8(62%)预测结果,最后一个(8%)解决了预后。没有任何影像组学模型经过外部验证。平均RQS为15.92(范围:10-18)。
    我们证明了目前正在AVM管理的不同方面研究影像组学。虽然还没有准备好临床使用,影像组学是一个迅速兴起的领域,有望在未来的医学成像中发挥重要作用。需要更多的前瞻性研究来确定影像组学在诊断中的作用,合并症的预测,以及AVM管理中的治疗选择。
    UNASSIGNED: Arteriovenous malformations (AVMs) are rare vascular anomalies involving a disorganization of arteries and veins with no intervening capillaries. In the past 10 years, radiomics and machine learning (ML) models became increasingly popular for analyzing diagnostic medical images. The goal of this review was to provide a comprehensive summary of current radiomic models being employed for the diagnostic, therapeutic, prognostic, and predictive outcomes in AVM management.
    UNASSIGNED: A systematic literature review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 guidelines, in which the PubMed and Embase databases were searched using the following terms: (cerebral OR brain OR intracranial OR central nervous system OR spine OR spinal) AND (AVM OR arteriovenous malformation OR arteriovenous malformations) AND (radiomics OR radiogenomics OR machine learning OR artificial intelligence OR deep learning OR computer-aided detection OR computer-aided prediction OR computer-aided treatment decision). A radiomics quality score (RQS) was calculated for all included studies.
    UNASSIGNED: Thirteen studies were included, which were all retrospective in nature. Three studies (23%) dealt with AVM diagnosis and grading, 1 study (8%) gauged treatment response, 8 (62%) predicted outcomes, and the last one (8%) addressed prognosis. No radiomics model had undergone external validation. The mean RQS was 15.92 (range: 10-18).
    UNASSIGNED: We demonstrated that radiomics is currently being studied in different facets of AVM management. While not ready for clinical use, radiomics is a rapidly emerging field expected to play a significant future role in medical imaging. More prospective studies are warranted to determine the role of radiomics in the diagnosis, prediction of comorbidities, and treatment selection in AVM management.
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  • 文章类型: Journal Article
    这篇综述探讨了磁共振成像(MRI)技术的进展及其在诊断和治疗胶质瘤中的关键作用。最常见的原发性脑肿瘤.本文强调了整合现代MRI模式的重要性,如弥散加权成像和灌注磁共振成像,这对于评估神经胶质瘤的恶性程度和预测肿瘤行为至关重要。特别关注2021年世界卫生组织中枢神经系统肿瘤分类,强调分子诊断在神经胶质瘤分类中的整合,显著影响治疗决策。这篇综述还探讨了放射性基因组学,它将成像特征与分子标记相关联,以定制个性化治疗策略。尽管技术进步,MRI协议标准化和结果解释挑战依然存在,影响不同设置之间的诊断一致性。此外,该综述讨论了MRI区分肿瘤复发和假性进展的能力,这对患者管理至关重要。强调了加强标准化和协作研究以充分利用MRI在胶质瘤诊断和个性化治疗中的全部潜力的必要性,倡导加强对神经胶质瘤生物学的理解和更有效的治疗方法。
    This review examines the advancements in magnetic resonance imaging (MRI) techniques and their pivotal role in diagnosing and managing gliomas, the most prevalent primary brain tumors. The paper underscores the importance of integrating modern MRI modalities, such as diffusion-weighted imaging and perfusion MRI, which are essential for assessing glioma malignancy and predicting tumor behavior. Special attention is given to the 2021 WHO Classification of Tumors of the Central Nervous System, emphasizing the integration of molecular diagnostics in glioma classification, significantly impacting treatment decisions. The review also explores radiogenomics, which correlates imaging features with molecular markers to tailor personalized treatment strategies. Despite technological progress, MRI protocol standardization and result interpretation challenges persist, affecting diagnostic consistency across different settings. Furthermore, the review addresses MRI\'s capacity to distinguish between tumor recurrence and pseudoprogression, which is vital for patient management. The necessity for greater standardization and collaborative research to harness MRI\'s full potential in glioma diagnosis and personalized therapy is highlighted, advocating for an enhanced understanding of glioma biology and more effective treatment approaches.
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  • 文章类型: Editorial
    暂无摘要。
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    文章类型: Journal Article
    这项初步研究的目的是评估和比较从肝脏成像报告和数据系统5(LIRADS5)的配对福尔马林固定石蜡包埋(FFPE)和冷冻(FF)组织经皮核心活检获得的基因组学和蛋白质组学数据的质量。初步数据确定了差异表达的蛋白质和基因,中度和高分化HCC活检,在新鲜冷冻样品中具有更大的功效。这些数据为未来研究提供了对样品特征和适用性的宝贵见解。
    The aim of this pilot study is to evaluate and compare the quality of the genomics and proteomics data obtained from paired Formalin Fixed Paraffin Embedded (FFPE) and frozen (FF) tissue percutaneous core biopsies of Liver Imaging Reporting and Data System 5 (LIRADS 5) hepatocellular carcinoma (HCC) of varying histological grades. The preliminary data identified differentially expressed proteins and genes in poor, moderate and well differentiated HCC biopsies, with a greater efficacy in fresh frozen samples. The data offered valuable insights into the characteristics and suitability of samples for future studies.
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  • 文章类型: Journal Article
    背景:神经胶质瘤的准确分类对于选择免疫治疗至关重要,MRI包含大量的影像学特征,可能提示一些预后相关信号。我们的目标是预测新的亚型的胶质瘤使用影像学特征和表征他们的生存,免疫,基因组谱和药物反应。
    方法:我们最初从CPTAC数据集中获得了36名患者的341张图像,用于开发深度学习模型。收集来自TCGA_GBM的111名患者的1812张图像和来自TCGA_LGG的53名患者的152张图像用于测试和验证。开发了一种基于MaskR-CNN的深度学习方法,用于识别胶质瘤患者的新亚型并比较其生存状态,免疫浸润模式,基因组特征,特定药物,和不同亚型的预测模型。
    结果:200例胶质瘤患者(平均年龄,33年±19[标准偏差])。用于识别肿瘤区域的深度学习模型的准确度在测试集中达到88.3%(98/111),在验证集中达到83%(44/53)。根据放射学特征将样本分为两个亚型,显示出不同的预后结果(风险比,2.70).根据免疫浸润分析结果,预后较差的亚型被定义为免疫沉默放射组学(ISR)亚型(n=43),另一种亚型是免疫激活的放射组学(IAR)亚型(n=53)。亚型特异性基因组特征将细胞系分为ISR细胞系(n=9)和对照细胞系(n=13)。并鉴定了八种ISR特异性药物,其中4个已通过OCTAD数据库验证.三个基于机器学习的分类器显示放射学和基因组共同特征更好地预测胶质瘤的放射学亚型。
    结论:这些发现提供了关于放射基因组如何识别预测预后的特定亚型的见解。非侵入性的免疫和药物敏感性。
    BACKGROUND: Accurate classification of gliomas is critical to the selection of immunotherapy, and MRI contains a large number of radiomic features that may suggest some prognostic relevant signals. We aim to predict new subtypes of gliomas using radiomic features and characterize their survival, immune, genomic profiles and drug response.
    METHODS: We initially obtained 341 images of 36 patients from the CPTAC dataset for the development of deep learning models. Further 1812 images of 111 patients from TCGA_GBM and 152 images of 53 patients from TCGA_LGG were collected for testing and validation. A deep learning method based on Mask R-CNN was developed to identify new subtypes of glioma patients and compared the survival status, immune infiltration patterns, genomic signatures, specific drugs, and predictive models of different subtypes.
    RESULTS: 200 glioma patients (mean age, 33 years ± 19 [standard deviation]) were enrolled. The accuracy of the deep learning model for identifying tumor regions achieved 88.3 % (98/111) in the test set and 83 % (44/53) in the validation set. The sample was divided into two subtypes based on radiomic features showed different prognostic outcomes (hazard ratio, 2.70). According to the results of the immune infiltration analysis, the subtype with a poorer prognosis was defined as the immunosilencing radiomic (ISR) subtype (n = 43), and the other subtype was the immunoactivated radiomic (IAR) subtype (n = 53). Subtype-specific genomic signatures distinguished celllines into ISR celllines (n = 9) and control celllines (n = 13), and identified eight ISR-specific drugs, four of which were validated by the OCTAD database. Three machine learning-based classifiers showed that radiomic and genomic co-features better predicted the radiomic subtypes of gliomas.
    CONCLUSIONS: These findings provide insights into how radiogenomic could identify specific subtypes that predict prognosis, immune and drug sensitivity in a non-invasive manner.
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  • 文章类型: Journal Article
    放射治疗的重点是肿瘤,但也可以到达健康组织,引起可能与基因组因素有关的毒性。在这种情况下,放射性基因组学可以帮助减少毒性,增加放射治疗的有效性,和个性化治疗。重要的是要考虑尚未在放射基因组学中研究的人群的基因组概况,例如亚马逊土著人口。因此,我们的目标是分析放射基因组学的重要基因,比如ATM,TGFB1,RAD51,AREG,XRCC4,CDK1,MEG3,PRKCE,TANC1和KDR,在土著人民中,并绘制了该人群的放射性基因组概况。NextSeq500®平台用于测序反应;对于群体之间等位基因频率的差异,使用Fisher精确检验。我们鉴定了39个变种,其中2个是高影响:1个在KDR(rs41452948)中,另一个在XRCC4(rs1805377)中。我们在PRKCE中发现了四种尚未在文献中描述的修饰变体。我们在TANC1中没有发现任何变异,TANC1是放疗中个性化用药的重要基因,在以前的队列中与毒性相关。为土著人民配置保护因素。我们确定了四个SNV(rs664143,rs1801516,rs1870377,rs1800470),在以前的研究中与毒性相关。了解土著人民的放射基因组概况可以帮助个性化他们的放射治疗。
    Radiotherapy is focused on the tumor but also reaches healthy tissues, causing toxicities that are possibly related to genomic factors. In this context, radiogenomics can help reduce the toxicity, increase the effectiveness of radiotherapy, and personalize treatment. It is important to consider the genomic profiles of populations not yet studied in radiogenomics, such as the indigenous Amazonian population. Thus, our objective was to analyze important genes for radiogenomics, such as ATM, TGFB1, RAD51, AREG, XRCC4, CDK1, MEG3, PRKCE, TANC1, and KDR, in indigenous people and draw a radiogenomic profile of this population. The NextSeq 500® platform was used for sequencing reactions; for differences in the allelic frequency between populations, Fisher\'s Exact Test was used. We identified 39 variants, 2 of which were high impact: 1 in KDR (rs41452948) and another in XRCC4 (rs1805377). We found four modifying variants not yet described in the literature in PRKCE. We did not find any variants in TANC1-an important gene for personalized medicine in radiotherapy-that were associated with toxicities in previous cohorts, configuring a protective factor for indigenous people. We identified four SNVs (rs664143, rs1801516, rs1870377, rs1800470) that were associated with toxicity in previous studies. Knowing the radiogenomic profile of indigenous people can help personalize their radiotherapy.
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