Genomic biomarkers

基因组生物标志物
  • 文章类型: Journal Article
    充足的微量营养素摄入和状态是全球公共卫生目标。维生素和矿物质缺乏是普遍存在的,并且已知会损害整个生命阶段的健康和生存。然而,分子效应的知识,代谢途径,对微量营养素营养变化的生物反应,以及评估人群微量营养素缺乏及其病理学的能力仍然缺乏。基因组学中快速发展的方法论能力,表观基因组学,蛋白质组学,和代谢组学为营养研究界提供了无与伦比的机会,将微量营养素暴露与细胞健康联系起来;发现新的,可以说是微生物来源的必需微量营养素;以及分子生物学的整合方法,流行病学,和干预试验,以开发新的方法来评估和预防人群中微量营养素缺乏。在这篇评论文章中,我们提供新的术语来指定多体方法的营养应用,并鼓励跨基础公共卫生科学的合作,以推进微量营养素缺乏的预防。
    Adequate micronutrient intake and status are global public health goals. Vitamin and mineral deficiencies are widespread and known to impair health and survival across the life stages. However, knowledge of molecular effects, metabolic pathways, biological responses to variation in micronutrient nutriture, and abilities to assess populations for micronutrient deficiencies and their pathology remain lacking. Rapidly evolving methodological capabilities in genomics, epigenomics, proteomics, and metabolomics offer unparalleled opportunities for the nutrition research community to link micronutrient exposure to cellular health; discover new, arguably essential micronutrients of microbial origin; and integrate methods of molecular biology, epidemiology, and intervention trials to develop novel approaches to assess and prevent micronutrient deficiencies in populations. In this review article, we offer new terminology to specify nutritional application of multiomic approaches and encourage collaboration across the basic to public health sciences to advance micronutrient deficiency prevention.
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  • 文章类型: Journal Article
    口腔癌是全球第六大最常见的癌症,口腔鳞状细胞癌(OSCC)占口腔癌的90%以上。这是一个重大的健康问题,特别是在低收入和中等收入国家(LMICs),由于其高发病率和显著的死亡率和发病率。尽管是全球负担,即使OSCC的管理取得了重大进展,这种疾病的总体结果仍然很糟糕。随着时间的到来,先进的诊断和治疗方法已经开始实践,但疾病负担并没有明显改善。结果不佳的主要原因是诊断延迟,局部复发和对目前可用治疗方案的耐药性。在这次审查中,我们强调了诊断中存在的挑战,并强调了微创生物标志物的进展.此外,已经讨论了涉及临床医生和研究人员的协作多维方法的重要性,以及需要重新定义和建立更好的效用和管理现有的诊断和治疗方案以及微创/非侵入性生物标志物。
    Oral cancer is the 6th most common type of cancer worldwide, and oral squamous cell carcinoma (OSCC) accounts for >90% of oral cancers. It is a major health problem, particularly in low- and middle-income countries (LMICs), due to both its high incidence and significant mortality and morbidity. Despite being a global burden, and even with the significant advancement in the management of OSCC, the overall outcome of the disease is still abysmal. With the advent of time, advanced diagnostic and treatment approaches have come into practice, but the burden of the disease has not improved significantly. Major reasons attributed to the poor outcome are delay in diagnosis, locoregional recurrence and resistance to the currently available treatment regimen. In this review, we have highlighted the existing challenges in the diagnosis and have emphasized the advancements in minimally invasive biomarkers. Additionally, the importance of collaborative multidimensional approaches involving clinicians and researchers has been discussed, as well as the need to redefine and establish better utility and management of existing diagnostic and treatment protocols along with the minimally invasive/non-invasive biomarkers.
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  • 文章类型: Journal Article
    肥大细胞是介导IgE依赖性过敏反应的主要效应细胞。我们试图使用集成网络分析来鉴定与IgE介导的原代人肥大细胞活化中的高反应相关的基因组生物标志物。来自262名正常供体的原代人肥大细胞培养物被分类为高,平均和低反应者组根据其激活反应概况。转录组分析用于鉴定在基线条件下在不同应答者培养物中差异表达的基因,并通过构建个性化扰动曲线(PEEP)对数据进行分析。对于上调的基因,对所有三个响应者组的每个样本构建PEEP表明,高响应者表现出更高的“扰动”样本百分比,其PEEP值超出正常表达范围。此外,将四个选择的上调基因的PEEP整合到不同组的组合谱中,证明了这四个基因上调表达的特定模式,串联组合,仅在高反应者中观察到。总之,这种组合方法可用于鉴定一组基因组生物标志物,这些生物标志物与来自一组正常供体的血液的人肥大细胞培养物中的高脱颗粒反应相关.
    Mast cells are the major effector cells that mediate IgE-dependent allergic reactions. We sought to use integrated network analysis to identify genomic biomarkers associated with high response in IgE-mediated activation of primary human mast cells. Primary human mast cell cultures derived from 262 normal donors were categorized into High, Average and Low responder groups according to their activation response profiles. Transcriptome analysis was used to identify genes that were differentially expressed in different responder cultures in their baseline conditions, and the data were analyzed by constructing a personalized perturbed profile (PEEP). For upregulated genes, the construction of PEEP for each individual sample of all three responder groups revealed that High responders exhibited a higher percentage of \"perturbed\" samples whose PEEP values lay outside the normal range of expression. Moreover, the integration of PEEP of four selected upregulated genes into distinct sets of combinatorial profiles demonstrated that the specific pattern of upregulated expression of these four genes, in a tandem combination, was observed exclusively among the High responders. In conclusion, this combinatorial approach was useful in identifying a set of genomic biomarkers that are associated with high degranulation response in human mast cell cultures derived from the blood of a cohort of normal donors.
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  • 文章类型: Journal Article
    我们以前报道过具有四种基因突变(ATM,RB1,FANCC,或ERCC2)可能对基于顺铂的新辅助化疗(NAC)有反应,导致在膀胱切除术时(pT0)的无癌手术标本。这里,我们报告我们对这一发现的验证。使用CARIS592基因面板(卡利斯生命科学,凤凰城,AZ,美国),我们分析了来自一项新辅助吉西他滨和顺铂(GC)的大型多中心试验(S1314)的105个NAC前肿瘤标本,或者剂量密集的甲氨蝶呤,长春碱,阿霉素,和顺铂(DDMVAC)。我们发现这四个基因中的任何一个在手术时预测pT0的突变(比值比=5.36;95%置信区间[CI]2.05,14.02;双侧p=0.0006)。生物标志物在预测疾病的存在方面更好(pT0的阴性预测值86%;95%CI73%,94%)比没有疾病(pT0的阳性预测值48%;95%CI35%,62%)。就pT0而言,没有证据表明治疗臂(DDMVACvsGC)与遗传变异之间存在相互作用。当与临床评估相结合时,这些发现有助于患者选择顺铂为基础的化疗后保留膀胱.患者总结:肌层浸润性膀胱癌患者的常见护理标准是新辅助化疗(NAC),然后进行膀胱切除术以实现治愈。我们先前发现,在初次活检(经尿道膀胱肿瘤切除术)时收集的肿瘤样品中的特定DNA突变可以预测对NAC的完全反应。换句话说,有这些突变的患者在手术后发现膀胱无癌的可能性更大.在这项研究中,我们分析了一组更大的肿瘤样本,这些样本来自一项化疗后膀胱切除术的国家临床试验,以验证这些早期发现.我们得出结论,这种生物标志物测试,当结合仔细的临床评估,可用于将患者分配给仔细的膀胱监测,而不是手术。这一假设已在先前提出的RETAIN试验(NCT02710734)中得到检验。
    We previously reported that tumors harboring any one of four gene mutations (ATM, RB1, FANCC, or ERCC2) were likely to respond to neoadjuvant cisplatin-based chemotherapy (NAC), resulting in cancer-free surgical specimens at the time of cystectomy (pT0). Here, we report our validation of this finding. Using the CARIS 592 Gene Panel (Caris Life Sciences, Phoenix, AZ, USA), we analyzed 105 pre-NAC tumor specimens from a large multicenter trial (S1314) of either neoadjuvant gemcitabine and cisplatin (GC), or dose-dense methotrexate, vinblastine, Adriamycin, and cisplatin (DDMVAC). We found that a mutation in any one of these four genes predicted for pT0 at surgery (odds ratio = 5.36; 95% confidence interval [CI] 2.05, 14.02; two-sided p = 0.0006). The biomarker was better at predicting the presence of disease (negative predictive value for pT0 86%; 95% CI 73%, 94%) than the absence of disease (positive predictive value for pT0 48%; 95% CI 35%, 62%). There was no evidence of an interaction between the treatment arm (DDMVAC vs GC) and the genetic variant in terms of pT0. When combined with clinical assessment, these findings help inform patient selection for bladder preservation after cisplatin-based chemotherapy. PATIENT SUMMARY: A common standard of care for patients with muscle-invasive bladder cancer is neoadjuvant chemotherapy (NAC) followed by cystectomy to achieve cure. We previously discovered that specific DNA mutations in tumor samples collected at initial biopsy (transurethral resection of a bladder tumor) were predictive of a complete response to NAC. In other words, patients with these mutations were more likely to have a bladder found to be cancer free after surgery. In this study, we analyzed a larger set of tumor samples from a national clinical trial of chemotherapy followed by cystectomy to validate these earlier findings. We conclude that this biomarker test, when combined with careful clinical assessment, can be used to allocate patients to careful bladder surveillance instead of surgery. This hypothesis has been tested in the RETAIN trial presented previously (NCT02710734).
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  • 文章类型: Journal Article
    大规模的肿瘤分子谱分析表明,不同的癌症组织学是由具有可用于治疗的统一生物标志物的共同途径驱动的。与疾病无关的篮子试验已越来越多地用于测试跨癌症类型的生物标志物驱动的疗法。这些试验导致了药物批准,改善了患者的生活,同时提高了我们对癌症生物学的理解。这篇综述侧重于实施篮子试验的实用性,重点是分子靶向试验。我们检查了基因组生物标志物和患者选择的生物学微妙之处,讨论以前在篮子试验促进的药物开发方面的成功,描述某些新的靶标和药物,并强调参与者招募和研究设计的实际考虑。这篇综述还强调了帮助患者进入篮子试验的策略。随着篮子试验变得越来越普遍,确保公平实施这些研究的步骤对于分子靶向药物的开发至关重要.
    Large-scale tumor molecular profiling has revealed that diverse cancer histologies are driven by common pathways with unifying biomarkers that can be exploited therapeutically. Disease-agnostic basket trials have been increasingly utilized to test biomarker-driven therapies across cancer types. These trials have led to drug approvals and improved the lives of patients while simultaneously advancing our understanding of cancer biology. This review focuses on the practicalities of implementing basket trials, with an emphasis on molecularly targeted trials. We examine the biologic subtleties of genomic biomarker and patient selection, discuss previous successes in drug development facilitated by basket trials, describe certain novel targets and drugs, and emphasize practical considerations for participant recruitment and study design. This review also highlights strategies for aiding patient access to basket trials. As basket trials become more common, steps to ensure equitable implementation of these studies will be critical for molecularly targeted drug development.
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  • 文章类型: Journal Article
    目的:在当代泌尿外科实践中,管理罕见的泌尿生殖系统(GU)恶性肿瘤面临重大挑战,需要全面了解其独特的特征和量身定制的治疗方法。
    结果:罕见的GU恶性肿瘤,无论是本身,常见组织学变异,或罕见部位的常见肿瘤,通常缺乏广泛可用的临床指南。因此,治疗决策通常基于经验证据,冒着次优结果的风险。然而,分子谱分析的最新进展,靶向治疗,和免疫治疗为改善管理策略和患者预后提供了有希望的途径.这篇综述提供了临床实践中遇到的一些罕见的GU恶性肿瘤的全面概述。包括他们独特的病理特征,当前的管理方法,和正在进行的研究方向。了解这些罕见肿瘤的复杂性并实施多学科治疗策略对于优化患者护理和改善生存结果至关重要。
    OBJECTIVE: In contemporary urological practice, managing rare genitourinary (GU) malignancies presents significant challenges, necessitating a comprehensive understanding of their unique characteristics and tailored treatment approaches.
    RESULTS: Rare GU malignancies, whether per se, variants of common histologies, or common tumors in uncommon locations, often lack widely available clinical guidelines. Consequently, treatment decisions are frequently based on empirical evidence, risking suboptimal outcomes. However, recent advances in molecular profiling, targeted therapies, and immunotherapy offer promising avenues for improving management strategies and patient outcomes. This review provides a comprehensive overview of some rare GU malignancies encountered in clinical practice, including their distinct pathological features, current management approaches, and ongoing research directions. Understanding the complexities of these rare tumors and implementing multidisciplinary treatment strategies are essential for optimizing patient care and improving survival outcomes.
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  • 文章类型: Journal Article
    众所周知,循环微小RNA(miRNA)通过调节参与各种病理生理过程的基因表达,在多种疾病中发挥相关作用。包括勃起功能障碍(ED)和心血管疾病(CVD)。
    本研究旨在鉴定ED患者血液样本中的miRNA-21谱,CVD,以及两种病理的组合来阐明miRNA-21的潜在功能。
    共纳入45例CVD和/或接受勃起功能测试的患者,并分为以下几类:CVD伴ED(病例,n=29)和具有ED或CVD的对照(n=16)。实时聚合酶链反应分析验证了结果。miRNA-21表达定量,和信息学分析被用来预测这种差异表达的miRNA-21的功能。
    总共64%的病例(63±9年,66%患有严重ED,56%的CV射血分数)首先以ED为前哨临床表现。对照ED中的血清miRNA-21水平是显著的,比CVD对照和病例高10倍。在勃起功能和miRNA-21水平之间发现了显着的负相关(p=0.0368,β=-2.046)。
    我们的研究为CVD患者中miRNA-21与ED之间的功能相互作用提供了全面的见解。其相关性在于miRNA作为生物标志物应用于心血管预测医学领域的潜力。
    UNASSIGNED: It is well-known that circulating microRNAs (miRNAs) play a relevant role in many kinds of diseases by regulating the expression of genes involved in various pathophysiologic processes, including erectile dysfunction (ED) and cardiovascular diseases (CVD).
    UNASSIGNED: This study aimed to identify the miRNA-21 profile in the blood samples of patients with ED, CVD, and the combination of both pathologies to elucidate the potential function of miRNA-21.
    UNASSIGNED: A total of 45 patients with CVD and/or who underwent the erectile function test were included and divided into the following categories: CVD with ED (cases, n = 29) and controls (n = 16) with either ED or CVD. Real-time polymerase chain reaction analysis verified the results. miRNA-21 expression was quantified, and informatics analysis was applied to predict the functions of this differentially expressed miRNA-21.
    UNASSIGNED: A total of 64% of cases (63 ± 9 years, 66% with severe ED, 56% with CV ejection fraction) first presented ED as the sentinel clinical manifestation. Serum miRNA-21 levels in the control ED were significant, up to 10-fold higher than in the CVD controls and cases. A significant inverse (p = 0.0368, β = -2.046) correlation was found between erectile function and miRNA-21 levels.
    UNASSIGNED: Our study provides comprehensive insights into the functional interaction between miRNA-21 and ED in CVD patients. Its relevance lies in the potential of miRNA as a biomarker to be applied in the cardiovascular predictive medicine field.
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  • 文章类型: Journal Article
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  • 文章类型: Observational Study
    背景:当前晚期黑色素瘤的治疗算法包括靶向和免疫治疗的交替路线,主要是通过免疫检查点封锁。虽然实体瘤的综合基因组分析已被批准为伴随诊断,除了BRAF突变和有争议的肿瘤突变负担外,黑色素瘤仍没有获得批准的预测性生物标志物.这项研究提供了对靶标和免疫疗法治疗的晚期黑色素瘤进行综合基因组分析的多中心观察临床试验的结果。
    方法:82个样本,从FFPE存档的转移性黑色素瘤的7个意大利癌症中心收集,并通过定制的基于184基因扩增子的NGS面板对匹配的血液进行测序。测序和生物信息学分析在中心中心进行。通过离子报告框架进行初步分析。二次分析和机器学习建模,包括单变量和多变量,COX/Lasso组合,和随机森林,是通过自定义R/Python脚本实现的。
    结果:ACC-mela队列的基因组学景观在体细胞水平上与单核苷酸变异体和INDEL的一些基因靶标相当。所有临床相关靶标如BRAF和NRAS具有相当的分布,因此表明在黑素瘤中更大规模测序的价值。由于生物技术偏差和队列数量,在CNV水平上没有达到可比性。完全反应者的肿瘤突变负担中位数略高,但通过几种阈值策略在Kaplan-Meier生存分析中未能达到统计学意义。PDGFRB上的突变,NOTCH3和RET被证明对免疫检查点治疗总体和无病生存率有积极影响,而NOTCH4中的变体被发现对两个终点都有害。
    结论:本研究的结果显示了基因组学驱动的网络试验的价值和挑战。数据也可以是作为免疫疗法和靶向疗法基因组生物标志物研究的验证队列的有价值的资源。
    The current therapeutic algorithm for Advanced Stage Melanoma comprises of alternating lines of Targeted and Immuno-therapy, mostly via Immune-Checkpoint blockade. While Comprehensive Genomic Profiling of solid tumours has been approved as a companion diagnostic, still no approved predictive biomarkers are available for Melanoma aside from BRAF mutations and the controversial Tumor Mutational Burden. This study presents the results of a Multi-Centre Observational Clinical Trial of Comprehensive Genomic Profiling on Target and Immuno-therapy treated advanced Melanoma.
    82 samples, collected from 7 Italian Cancer Centres of FFPE-archived Metastatic Melanoma and matched blood were sequenced via a custom-made 184-gene amplicon-based NGS panel. Sequencing and bioinformatics analysis was performed at a central hub. Primary analysis was carried out via the Ion Reporter framework. Secondary analysis and Machine Learning modelling comprising of uni and multivariate, COX/Lasso combination, and Random Forest, was implemented via custom R/Python scripting.
    The genomics landscape of the ACC-mela cohort is comparable at the somatic level for Single Nucleotide Variants and INDELs aside a few gene targets. All the clinically relevant targets such as BRAF and NRAS have a comparable distribution thus suggesting the value of larger scale sequencing in melanoma. No comparability is reached at the CNV level due to biotechnological biases and cohort numerosity. Tumour Mutational Burden is slightly higher in median for Complete Responders but fails to achieve statistical significance in Kaplan-Meier survival analysis via several thresholding strategies. Mutations on PDGFRB, NOTCH3 and RET were shown to have a positive effect on Immune-checkpoint treatment Overall and Disease-Free Survival, while variants in NOTCH4 were found to be detrimental for both endpoints.
    The results presented in this study show the value and the challenge of a genomics-driven network trial. The data can be also a valuable resource as a validation cohort for Immunotherapy and Target therapy genomic biomarker research.
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  • 文章类型: Journal Article
    肿瘤学中基于基因组的测试是一个迅速扩展的医疗保健领域,是新兴的精准医学领域的基础。在加拿大,医疗保健监督的零散性质以及缺乏支持快速评估的清晰透明程序,阻碍了新型基因组医学测试的有效和经过考虑的采用。评估,和基因组测试的实施。本文概述了一些关键障碍,并提出了解决这些挑战的方法,作为开发肿瘤学基因组医学国家方法的潜在途径。
    Genome-based testing in oncology is a rapidly expanding area of health care that is the basis of the emerging area of precision medicine. The efficient and considered adoption of novel genomic medicine testing is hampered in Canada by the fragmented nature of health care oversight as well as by lack of clear and transparent processes to support rapid evaluation, assessment, and implementation of genomic tests. This article provides an overview of some key barriers and proposes approaches to addressing these challenges as a potential pathway to developing a national approach to genomic medicine in oncology.
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