Related Experiment Video
Updated: Jun 13, 2025

Next Generation Sequencing for the Detection of Actionable Mutations in Solid and Liquid Tumors
Published on: September 20, 2016
Examining the Role of Extrachromosomal DNA in 1,216 Lung Cancers
Azhar Khandekar1,2,3,4, Phuc H Hoang1, Jens Luebeck5
1Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA.
Abstract:
The role of extrachromosomal DNA (ecDNA) in lung cancer, particularly in subjects who never smoked (LCINS), remains unclear. Examination of 1,216 whole-genome-sequenced lung cancers identified ecDNA in 18.9% of patients. Recurrent amplification of MDM2 and other oncogenes via ecDNA possibly drives a LCINS subset. Tumors harboring ecDNA showed worse overall survival than tumors harboring other focal amplifications. A strong association with whole-genome doubling suggests most ecDNA reflects genomic instability in treatment-naïve lung cancer.
More Related Videos
Related Concept Videos
Exon Recombination
Exon shuffling follows “splice frame rules.” Each exon...
Non-LTR Retrotransposons
Epigenetic Regulation
X-chromosome...
lncRNA - Long Non-coding RNAs
Cancer Prevention
Some...
Inheritance of Chromatin Structures

