122 results match your criteria: "Geneseeq Research Institute[Affiliation]"

THOR: a TMB heterogeneity-adaptive optimization model predicts immunotherapy response using clonal genomic features in group-structured data.

Brief Bioinform

November 2024

Department of Biomedical Engineering, College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, 29 Jiangjun Avenue, Jiangning, Nanjing 211106, China.

With the increasing number of indications for immune checkpoint inhibitors in early and advanced cancers, the prospect of a tumor-agnostic biomarker to prioritize patients is compelling. Tumor mutation burden (TMB) is a widely endorsed biomarker that quantifies nonsynonymous mutations within tumor DNA, essential for neoantigen production, which, in turn, correlates with the immune response and guides decision-making. However, the general clinical application of TMB-relying on simple mutational counts targeted at a single endpoint-does not adequately capture the complex clonal structure of tumors nor the multifaceted nature of prognostic indicators.

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The aim of this study was to examine the genomic characteristics and explore the molecular mechanisms underlying adrenal metastases in lung adenocarcinoma. 57 patients diagnosed with lung adenocarcinoma (LUAD) and adrenal metastases (AM) were enrolled, alongside 33 controls diagnosed with non-adrenal metastases (non-AM) at the time of diagnosis. The primary lung cancer tissue sample were analyzed using next-generation sequencing.

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Chemoradiotherapy and Subsequent Immunochemotherapy as Conversion Therapy in Unresectable Locally Advanced Esophageal Squamous Cell Carcinoma: A Phase II NEXUS-1 Trial.

Clin Cancer Res

November 2024

Section of Esophageal and Mediastinal Oncology, Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

Purpose: This phase II trial investigated the safety and efficacy of chemoradiotherapy (CRT) followed by immunochemotherapy (iCT) and surgery in unresectable locally advanced esophageal squamous cell carcinoma (ESCC).

Patients And Methods: Patients with unresectable locally advanced ESCC received radiotherapy (50 Gy/25f, 5 days/week) and nab-paclitaxel (100 mg on day 1/week) plus cisplatin (25 mg/m2 on day 1/week) for 5 weeks, followed by tislelizumab (200 mg on day 1/cycle) plus chemotherapy (nab-paclitaxel 150 mg/m2 and cisplatin 75 mg/m2 on day 2/cycle) for two 21-day cycles. Patients who converted to resectable underwent surgery 2 to 4 weeks afterward.

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Predicting Disease Progression in Inoperable Localized NSCLC Patients Using ctDNA Machine Learning Model.

Cancer Med

October 2024

Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

Introduction: There is an urgent clinical need to accurately predict the risk for disease progression in post-treatment NSCLC patients, yet current ctDNA mutation profiling approaches are limited by low sensitivity. We represent a non-invasive liquid biopsy assay utilizing cfDNA neomer profiling for predicting disease progression in 44 inoperable localized NSCLC patients.

Methods: A total of 97 plasma samples were collected at various time points during or post-treatments (TP1: 39, TP2: 33, TP3: 25).

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The clinical utility of plasma circulating tumor DNA in the diagnosis and disease surveillance in non-diffuse large B-cell non-Hodgkin lymphomas.

Future Oncol

November 2024

Department of Hematology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China.

Article Synopsis
  • * High detection rates of plasma ctDNA were noted across these subtypes, with strong agreement on actionable mutations, highlighting ctDNA's potential as a tool for monitoring disease progression and response to treatment.
  • * The study also found that ctDNA levels could predict relapses before they appeared in imaging studies, suggesting its value as a noninvasive method for disease surveillance in non-DLBCL NHLs.
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Article Synopsis
  • * A study involving whole-exome sequencing of 130 samples from 18 patients revealed that super-MPLCs show a high frequency of BRAF mutations (31.5%) and low EGFR mutations (13.8%).
  • * The genomic characteristics indicate that as the number of lesions increases, BRAF mutations dominate, suggesting that targeted therapies may be less effective due to this unique mutation pattern.
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Anlotinib treatment for rapidly progressing pediatric embryonal rhabdomyosarcoma in the maxillary gingiva: a case report.

Diagn Pathol

October 2024

Department of Pediatric Intensive Care Unit, National Center for Children's Health, Children's Hospital of Fudan University, 399 Wanyuan Road, Shanghai, 201102, China.

Background: Embryonal rhabdomyosarcoma (ERMS) is a highly aggressive form of soft-tissue sarcoma that predominantly affects children. Due to limited benefits and resistance to therapy, there is an unmet need to explore alternative therapeutic strategies.

Case Presentation: In this report, we present a rare case of pediatric ERMS located on the right side of the maxillary gingiva.

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A biomarker exploration in small-cell lung cancer for brain metastases risk and prophylactic cranial irradiation therapy efficacy.

Lung Cancer

October 2024

Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, Shandong, PR China; Department Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, PR China; Department of Radiation Oncology, Anhui Provincial Cancer Hospital, Hefei 230031, Anhui, PR China. Electronic address:

Background: Small-cell lung cancer (SCLC) is an aggressive malignancy with a poor prognosis. Limited-stage (LS)-SCLC comprises only one-third of SCLC cases, resulting in limited molecularly targeted therapies and treatment options. Despite advances in thoracic and cranial irradiation leading to improved outcomes, a notable proportion of patients develop brain metastasis (BM), highlighting the importance of identifying high-risk patients for tailored screening and treatment strategies.

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Molecular evolution of intestinal-type early gastric cancer according to Correa cascade.

J Biomed Res

September 2024

Department of General Surgery, the First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210029, China.

Early screening is crucial for the prevention of intestinal-type gastric cancer. The objective of the current study was to ascertain molecular evolution of intestinal-type gastric cancer according to the Correa cascade for the precise gastric cancer screening. We collected sequential lesions of the Correa cascade in the formalin-fixed and paraffin-embedded endoscopic submucosal dissection-resected specimens from 14 Chinese patients by microdissection, and subsequently determined the profiles of somatic aberrations during gastric carcinogenesis using the whole exome sequencing, identifying multiple variants at different Correa stages.

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Association between low incidence of TP53 mutations and reduced early relapse rates in Uygur DLBCL.

Ann Hematol

December 2024

Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, No. 91, Tianchi Road, Urumqi, 830011, Xinjiang Uygur Autonomous Region, China.

Diffuse large B-cell lymphoma (DLBCL) demonstrates significant heterogeneity, investigations into the distinctions in clinical and molecular characteristics between Chinese Uygur and Han DLBCL patients remain unexplored. We retrospectively reviewed 279 DLBCL patients (105 Uygur and 174 Han patients), of which 155 patients underwent genetic profiling by NGS. Compared with Han patient, Uygur patients have better clinical prognostic indicators, including a higher proportion of patients with 0-1 extranodal involvement and I/II Ann Arbor staging.

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Purpose: Next-generation sequencing (NGS) has enabled the detection of concomitant driver alterations in non-small cell lung cancer (NSCLC). However, the magnitude and clinical relevance of concomitant drivers remain to be explored.

Methods: We profiled concomitant driver alterations of + NSCLC by using targeted NGS.

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Article Synopsis
  • Uterine corpus endometrial carcinoma (UCEC) is a common cancer among women, and early detection is crucial for better outcomes, yet reliable early diagnostic tests are currently lacking.* -
  • The study focuses on analyzing circulating cell-free DNA (cfDNA) from blood samples using low-coverage whole-genome sequencing and a machine learning model, which has shown high accuracy in distinguishing UCEC from healthy conditions (AUCs of 0.991 and 0.994 in training and validation cohorts, respectively).* -
  • The cfDNA model demonstrated excellent sensitivity (up to 98.5%) and specificity (95.5%) for UCEC detection, potentially identifying 99% of early-stage patients, which
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Multidimensional Fragmentomics Enables Early and Accurate Detection of Colorectal Cancer.

Cancer Res

October 2024

Colorectal Center, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China.

Colorectal cancer is frequently diagnosed in advanced stages, highlighting the need for developing approaches for early detection. Liquid biopsy using cell-free DNA (cfDNA) fragmentomics is a promising approach, but the clinical application is hindered by complexity and cost. This study aimed to develop an integrated model using cfDNA fragmentomics for accurate, cost-effective early-stage colorectal cancer detection.

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Circulating tumor DNA assisting lymphoma genetic feature profiling and identification.

Ann Hematol

October 2024

Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, China.

Article Synopsis
  • Lymphoma tissue biopsies may miss important genetic information due to their limited accessibility and genetic diversity, prompting this study to explore the effectiveness of circulating tumor DNA (ctDNA) for profiling and monitoring specific lymphomas like classic Hodgkin lymphoma (cHL), primary mediastinal large B-cell lymphoma (PMBCL), and diffuse large B-cell lymphoma (DLBCL).
  • The study analyzed tumor tissue and ctDNA from 155 lymphoma patients using next-generation sequencing, finding that ctDNA had a high agreement with tissue samples, revealing unique mutations and higher mutation frequencies, particularly in cHL.
  • Results indicated that ctDNA captures significant genomic alterations specific to each lymphoma type and can provide insights into
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Molecular alterations and prognosis of breast cancer with cutaneous metastasis.

Diagn Pathol

July 2024

Department of Oncology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, People's Republic of China.

Article Synopsis
  • Cutaneous metastasis (CM) occurs in 5-30% of breast cancer patients, leading to poor treatment responses and unfavorable prognoses; understanding the molecular changes involved is crucial for identifying potential biomarkers.
  • A study analyzed 13 patients with breast cancer and CM, using next-generation sequencing and immunohistochemistry to identify genetic alterations and their relation to overall prognosis.
  • Results showed a significant correlation between certain gene mutations (e.g., TP53, PIK3CA) and worse outcomes, suggesting that CM has a different mutational landscape compared to primary tumors.
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Early change of plasma Epstein-Barr virus DNA load and the viral lytic genome level could positively predict clinical outcome in recurrent or metastatic nasopharyngeal carcinoma receiving anti-programmed cell death 1 monotherapy.

BMC Cancer

July 2024

Department of Clinical Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, 510060, P. R. China.

Article Synopsis
  • Patients with recurrent metastatic nasopharyngeal carcinoma (RM-NPC) show improved survival outcomes when their plasma Epstein-Barr virus (EBV) DNA load decreases significantly during treatment with anti-PD-1 therapies.
  • In a study involving two phase I trials, researchers analyzed data from 68 patients and found that lower baseline EBV DNA levels correlated with smaller tumors and better treatment responses.
  • The study concluded that monitoring EBV DNA levels and lytic gene expression could help predict patient outcomes, with early EBV response associated with longer overall survival compared to those with increasing EBV loads.
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Atypical L858R or other L858X mutations in the epidermal growth factor receptor (EGFR) gene, beyond the classical EGFR mutation caused by c.2573 T > G, have been identified in non-small cell lung cancer (NSCLC), yet their genomic features and survival benefits with EGFR tyrosine kinase inhibitor (TKI) treatment have not been fully explored. We retrospectively enrolled 489 NSCLC patients with baseline tumor tissue/plasma samples carrying uncommon EGFR (N = 124), EGFR (N = 17), or classical EGFR mutations (N = 348).

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Single-arm study of camrelizumab plus apatinib for patients with advanced mucosal melanoma.

J Immunother Cancer

June 2024

The Comprehensive Cancer Center of Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China

Background: Previous studies have suggested the potential synergistic antitumor activity when combining immune checkpoint inhibitors with anti-angiogenic agents in various solid tumors. We aimed to assess the efficacy and safety of camrelizumab (a humanized programmed cell death-1 antibody) plus apatinib (a vascular endothelial growth factor receptor tyrosine kinase inhibitor) for patients with advanced mucosal melanoma (MM), and explore-related biomarkers.

Methods: We conducted a single-center, open-label, single-arm, phase II study.

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Multi-dimensional cell-free DNA-based liquid biopsy for sensitive early detection of gastric cancer.

Genome Med

June 2024

Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, China.

Background: Gastric cancer is the fifth most common cancer type. Most patients are diagnosed at advanced stages with poor prognosis. A non-invasive assay for the detection of early-stage gastric cancer is highly desirable for reducing associated mortality.

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Molecular landscape and multi-omic measurements of heterogeneity in fetal adenocarcinoma of the lung.

NPJ Precis Oncol

June 2024

Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China.

Fetal adenocarcinoma of the lung (FLAC) is a rare form of lung adenocarcinoma and was divided into high-grade (H-FLAC) and low-grade (L-FLAC) subtypes. Despite the existence of some small case series studies, a comprehensive multi-omics study of FLAC has yet to be undertaken. In this study, we depicted the multi-omics landscapes of this rare lung cancer type by performing multi-regional sampling on 20 FLAC cases.

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Comparative Epigenetic Profiling Reveals Distinct Features of Mucosal Melanomas Associated with Immune Cell Infiltration and Their Clinical Implications.

Cancer Res Commun

May 2024

Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Melanoma and Sarcoma, Peking University Cancer Hospital and Institute, Beijing, P.R. China.

Article Synopsis
  • Mucosal melanoma generally responds poorly to anti-PD-1 therapy, but primary malignant melanoma of the esophagus (PMME) shows a notably better response, suggesting differences in underlying mechanisms.
  • A study collected tumor samples from 50 mucosal melanoma patients to analyze DNA methylation patterns, finding distinct epigenetic signatures that differentiate PMME from non-esophageal mucosal melanoma (NEMM).
  • The analysis revealed that PMME has a unique hypermethylation profile, with implications for improved immune responses and prognostic predictions for treatment outcomes.
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Cell-free DNA assay for malignancy classification of high-risk lung nodules.

J Thorac Cardiovasc Surg

November 2024

Department of Thoracic Surgery, Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Affiliated Cancer Hospital & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Nanjing, Jiangsu, China; Department of Science and Technology, Nanjing Medical University Affiliated Cancer Hospital & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Nanjing, Jiangsu, China; Biobank of Lung Cancer, Jiangsu Biobank of Clinical Resources, Nanjing, Jiangsu, China; Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, Jiangsu, China. Electronic address:

Article Synopsis
  • A study evaluated a new noninvasive method using cell-free DNA profiles to classify lung nodules as malignant or benign in patients undergoing surgery for high-risk lung nodules.
  • The researchers successfully created models that distinguished between malignant and benign nodules, achieving high accuracy rates (up to 0.95 area under the curve) in multiple cohorts.
  • The findings suggest that this cell-free DNA-based method could effectively reduce unnecessary surgeries by better identifying high-risk nodules that are actually benign.
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Pulmonary spindle cell carcinoma (PSCC) is a rare and aggressive non-small cell lung cancer (NSCLC) subtype with a dismal prognosis. The molecular characteristics of PSCC are largely unknown due to its rarity, which limits the diagnosis and treatment of this historically poorly characterized malignancy. We present comprehensive genomic profiling results of baseline tumor samples from 22 patients histologically diagnosed with PSCC, representing the largest cohort to date.

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