Background: Methylation of the O-methylguanine-DNA methyltransferase (MGMT) gene promoter is a well-established predictor of response to the DNA-alkylating agent temozolomide in patients with glioblastoma.
Materials And Methods: Pyrosequencing analysis was used to determine the MGMT promoter methylation status in 61 meningiomas, to clarify whether it might have a predictive role.
Results: Only two tumors (3%) had a mean methylation frequency higher than the cut-off value of 10% for the four CpG sites examined.
Conclusion: The methylation of the MGMT promoter is uncommon, or occurs at a low frequency in meningiomas. There is no convincing rationale to test such tumors for their MGMT methylation status in a clinical setting.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6199576 | PMC |
| http://dx.doi.org/10.21873/cgp.20096 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Potentially actionable molecular alterations in particular related to poor oncologic outcomes in salivary gland carcinomas.
BMC Cancer
January 2025
Department of Tumor Biology and Genetics, Medical University of Warsaw, Warsaw, Poland.
Aim: The study was designed to evaluate molecular alterations, relevant to the prognosis and personalized therapy of salivary gland cancers (SGCs).
Materials And Methods: DNA was extracted from archival tissue of 40 patients with various SGCs subtypes. A targeted next-generation sequencing (NGS) panel was used for the identification of small-scale mutations, focal and chromosomal arm-level copy number changes.
Characteristics of gut microbiota profiles in Asian elephants (Elephas maximus) with gastrointestinal disorders.
Sci Rep
January 2025
Center of Elephant and Wildlife Health, Animal Hospital, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand.
Colic and diarrhea are common gastrointestinal (GI) disorders in captive Asian elephants, which can severely impact health and lead to mortality. Gut dysbiosis, indicated by alterations in gut microbiome composition, can be observed in individuals with GI disorders. However, changes in gut microbial profiles of elephants with GI disorders have never been investigated.
View Article and Find Full Text PDFMultimodal cell-free DNA whole-genome TAPS is sensitive and reveals specific cancer signals.
Nat Commun
January 2025
Oxford Molecular Diagnostics Centre, Department of Oncology, University of Oxford, Oxford, UK.
The analysis of circulating tumour DNA (ctDNA) through minimally invasive liquid biopsies is promising for early multi-cancer detection and monitoring minimal residual disease. Most existing methods focus on targeted deep sequencing, but few integrate multiple data modalities. Here, we develop a methodology for ctDNA detection using deep (80x) whole-genome TET-Assisted Pyridine Borane Sequencing (TAPS), a less destructive approach than bisulphite sequencing, which permits the simultaneous analysis of genomic and methylomic data.
View Article and Find Full Text PDF[Expert consensus on the standardized application of whole exome sequencing technology in diagnosis of genetic disorders].
Zhonghua Yi Xue Yi Chuan Xue Za Zhi
January 2025
Shanghai Clinical Laboratory Center, Shanghai 200126, China.
Next generation sequencing (NGS) technology is playing an increasingly important role in the diagnosis of genetic diseases. Whole exome sequencing (WES) which targets the coding regions of the genome has been widely used in the diagnosis of genetic diseases for its low cost and high efficiency. However, compared to conventional methods, the NGS process is intricate, and there is variability in the expertise of data analysts and variant interpreters, which may lead to inconsistencies in the outcomes.
View Article and Find Full Text PDFBenchmarking cross-species single-cell RNA-seq data integration methods: towards a cell type tree of life.
Nucleic Acids Res
January 2025
BioEngineering Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
Cross-species single-cell RNA-seq data hold immense potential for unraveling cell type evolution and transferring knowledge between well-explored and less-studied species. However, challenges arise from interspecific genetic variation, batch effects stemming from experimental discrepancies and inherent individual biological differences. Here, we benchmarked nine data-integration methods across 20 species, encompassing 4.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!