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Genomic Analysis, Machine Learning Leads to Chemotherapy Response Features in IDH-Wild Type Glioblastoma

A Hong Kong University of Science and Technology- and Samsung Medical Center-led team reporting in Genome Medicine outlines molecular features linked to chemotherapy resistance in forms of glioblastoma (GBM) containing wild-type isocitrate dehydrogenase (IDH-wt) genes. Using exome sequencing, GliomaSCAN targeted panel sequencing, and/or RNA sequencing combined with machine learning (ML), the researchers characterized molecular features found in patient-derived glioma stem-like cells (GSCs) originating from 29 temozolomide chemotherapy-resistant IDH-wild type GBM cases and 40 IDH-wild type GBM cases that were susceptible to the adjuvant chemotherapy treatment. In the process, they came up with a combined tumor signature coinciding with temozolomide chemotherapy response, highlighting a handful of genes with enhanced expression in the temozolomide-resistant cells, along with other chemotherapy resistance- or sensitivity-related features. With multisector temozolomide screening, meanwhile, the authors show that chemotherapy response can vary within tumor samples from the same individual. "We identified molecular characteristics associated with [temozolomide] sensitivity, and illustrate the potential clinical value of a ML model trained from pharmacogenomic profiling of patient-derived GSC against IDH-wt GBMs," the authors write.

The Scan

Sick Newborns Selected for WGS With Automated Pipeline

Researchers successfully prioritized infants with potential Mendelian conditions for whole-genome sequencing or rapid whole-genome sequencing, as they report in Genome Medicine.

Acne-Linked Loci Found Through GWAS Meta-Analysis

Researchers in the European Journal of Human Genetics find new and known acne vulgaris risk loci with a genome-wide association study and meta-analysis, highlighting hair follicle- and metabolic disease-related genes.

Retina Cell Loss Reversed by Prime Editing in Mouse Model of Retinitis Pigmentosa

A team from China turns to prime editing to correct a retinitis pigmentosa-causing mutation in the PDE6b gene in a mouse model of the progressive photoreceptor loss condition in the Journal of Experimental Medicine.

CRISPR Screens Reveal Heart Attack-Linked Gene

Researchers in PLOS Genetics have used CRISPR screens to home in on variants associated with coronary artery disease that affect vascular endothelial function.