Search results for "Head and neck squamous-cell carcinoma"
showing 10 items of 52 documents
Fascin upregulation in primary head and neck squamous cell carcinoma is associated with lymphatic metastasis
2014
Fascin is an actin-bundling protein that is associated with cellular motility and cancer-cell invasion. The present study aimed to examine the expression of fascin in head and neck squamous cell carcinoma (HNSCC) and its potential use as a biomarker. In a prospective study with a median follow-up time of 48.8 months, tumor tissues, adjacent healthy tissues and cervical lymph node metastases were collected from 25 patients and analyzed by immunohistochemistry. The specimens were scored according to the intensity of fascin staining and the percentage of tumor cells stained using a semi-quantitative scoring approach; the data were analyzed and correlated with clinical follow-up observations. A…
Assessing Preferences in Patients with Head and Neck Squamous Cell Carcinoma: Phase I and II of Questionnaire Development.
2020
Shared-decision making for head and neck squamous cell carcinoma (HNSCC) is challenged by the difficulty to integrate the patient perception of value within the framework of a multidisciplinary team approach. The aim of this study was to develop a questionnaire to assess the preferences of HNSCC patients with respect to the disease trajectory, expected treatment, and toxicities. In accordance with the standardized EORTC Quality of Life Group&rsquo
Non-muscle myosin II as a predictive factor in head and neck squamous cell carcinoma
2018
Background The present study attempted to provide information regarding non-muscle myosin II (MII) isoforms immunoreactivity in patients with head and neck squamous cell carcinoma (HNSCC) and analysis of the patients’ clinical status after 5 years of monitoring. Material and Methods A semiquantitative analysis of the immunoreactivity of the MII isoforms was performed in 54 surgical specimens and its correlation with clinical and pathological variables and prognosis was verified. Data were analyzed using chi-square, Mann-Whitney and Kruskal-Wallis tests. To evaluate the survival over the total monitoring time and any connection with the proteins studied, the Kaplan-Meier analysis was used. P…
Evaluation der Ösophagoskopie im Staging und Restaging von Kopf-Hals-Plattenepithelkarzinomen
2020
Zusammenfassung Hintergrund Die Ösophagoskopie als Teil der Panendoskopie ist ein wichtiger Bestandteil der Diagnostik und Nachsorge von Patienten mit Kopf-Hals-Plattenepithelkarzinomen (HNSCC). Zweitkarzinome haben gravierenden Einfluss auf die Therapie der Primärerkrankung. Diese Arbeit soll prüfen, ob die routinemäßige Ösophagoskopie gerechtfertigt ist oder ob prädiktive Faktoren eine Selektion von Patienten mit erhöhtem Risikoprofil erlauben. Material und Methoden In einem systematischen Review wurden die Inzidenz von Zweitkarzinomen des Ösophagus und die Komplikationsrate der Ösophagoskopie erfasst. Eine retrospektive Auswertung erfolgte am eigenen Patientenkollektiv. Zur Evaluation de…
Ultrasound hyperthermia induces apoptosis in head and neck squamous cell carcinoma: an in vitro study
2016
Background Hyperthermia is considered an efficient complement in the treatment of head and neck squamous cell carcinoma (HNSCC). Hyperthermia induces cell apoptosis in a temperature- and time-dependent manner. However, the molecular mechanism of hyperthermia remains unclear. The aim of this study was to investigate the mechanism of apoptosis induced by ultrasound hyperthermia in HNSCC cell lines HN-30 and HN-13. Material and Methods We examined the dynamic changes of early apoptosis and secondary necrosis in HN-30 and HN-13 cells treated by hyperthermia at 42°C for 10 min. We further examined mitochondrial membrane potential in vitro by ultrasound hyperthermia for different heating temperat…
Abstract 5476: Inhibiting lactate transporters MCT-1 and MCT-4 target hypoxic HNSCC cells and sensitize them to metformin
2018
Abstract Head and neck squamous cell carcinoma (HNSCC) is treated primarily through a combination of surgery and radiation therapy. The problem of radioresistance, however, persists and requires new approaches to overcome it. Tumor hypoxia has been shown to be a driver of radioresistance, thereby prompting the targeting of the hypoxic niche, known to be highly glycolytic. Two key components of the hypoxic metabolic profile are lactate transporters MCT-1 and MCT-4, which sustain hypoxia-driven lactate production in cells. We hypothesize that inhibition of MCT-1 and MCT-4 will selectively target the growth of hypoxic tumor cells and potentially exert a synergistic effect with the antidiabetic…
Head and neck squamous cell carcinoma in people living with HIV in France.
2018
Abstract Objectives Head and neck squamous cell carcinoma (HNSCC), mainly due to smoking, is one of the leading causes of cancer deaths. However, an increasing number of tumors – especially oropharyngeal cancer – are reported in non-smokers in association with the human papillomavirus (HPV). As HIV-infected individuals are particularly at risk of HPV-related disease, we aimed to describe the burden of HNSCC in this population. Methods Retrospective chart review of patients from HIV clinics diagnosed with HNSCC between 2004 and 2014. Case patients were defined using the International Classification of Disease for Oncology (3rd edition). Age at HIV diagnosis and time from HIV diagnosis to HNS…
Comprehensive Genomic and Transcriptomic Analysis of Three Synchronous Primary Tumours and a Recurrence from a Head and Neck Cancer Patient
2021
Synchronous primary malignancies occur in a small proportion of head and neck squamous cell carcinoma (HNSCC) patients. Here, we analysed three synchronous primaries and a recurrence from one patient by comparing the genomic and transcriptomic profiles among the tumour samples and determining the recurrence origin. We found remarkable levels of heterogeneity among the primary tumours, and through the patterns of shared mutations, we traced the origin of the recurrence. Interestingly, the patient carried germline variants that might have predisposed him to carcinogenesis, together with a history of alcohol and tobacco consumption. The mutational signature analysis confirmed the impact of alc…
CpG islands in MyD88 and ASC/PYCARD/TMS1 promoter regions are differentially methylated in head and neck squamous cell carcinoma and primary lung squ…
2021
Abstract Background Patients with head and neck squamous cell carcinoma (HNSCC) can develop lung squamous cell carcinoma (LuSCC), which could be the second primary tumor or HNSCC metastasis. Morphologically it is difficult to distinguish metastatic HNSCC from a second primary tumor which presents a significant diagnostic challenge. Differentiation of those two malignancies is important because the recommended treatments for metastatic HNSCC and primary LuSCC differ significantly. We investigated if the quantification of the promotor methylation status in HNSCC and LuSCC differs. Methods Primary HNSCC (N = 36) and LuSCC (N = 17) were included in this study. Methylation status in the ASC/TMS1…
Distinct immune evasion in APOBEC ‐enriched, HPV ‐negative HNSCC
2020
Immune checkpoint inhibition leads to response in some patients with head and neck squamous cell carcinoma (HNSCC). Robust biomarkers are lacking to date. We analyzed viral status, gene expression signatures, mutational load and mutational signatures in whole exome and RNA-sequencing data of the HNSCC TCGA dataset (n = 496) and a validation set (DKTK MASTER cohort, n = 10). Public single-cell gene expression data from 17 HPV-negative HNSCC were separately reanalyzed. APOBEC3-associated TCW motif mutations but not total single nucleotide variant burden were significantly associated with inflammation. This association was restricted to HPV-negative HNSCC samples. An APOBEC-enriched, HPV-negat…