Journal Article

Longitudinal molecular trajectories of diffuse glioma in adults

Kouwenhoven, Mathilde C. M., Barnholtz-Sloan, Jill S., Wesseling, Pieter, Claus, Elizabeth B., Widhalm, Georg, Niclou, Simone P., Stead, Lucy F., Aldape, Kenneth, Chakravarti, Arnab, Nayyar, Naema, Barthel, Floris P., Fletcher, Michael N., Gan, Hui K., Lowman, Allison K., Grimmer, Matthew R., Schuster, Michael, Nam, Do-Hyun, Malta, Tathiane M., Poisson, Laila M., Cochran, Elizabeth J., Smitt, Peter A. Sillevis, Watts, Colin, Zadeh, Gelareh, Alfaro, Kristin D., Short, Susan C., De Groot, John F., Woehrer, Adelheid, Verhaak, Roel G. W., Gilbert, Mark R., Molinaro, Annette M., Beroukhim, Rameen, Bandopadhayay, Pratiti, Noushmehr, Houtan, Tanner, Georgette, Smits, Marion, Connelly, Jennifer, Ngan, Chew Yee, Bulsara, Ketan R., Costello, Joseph F., Sloan, Andrew E., Brastianos, Priscilla K., Li, Meihong, Jenkinson, Michael D., Kim, Hoon, LaViolette, Peter S., Park, Chul-Kee, Shaw, Brian L., Kocakavuk, Emre, Bock, Christoph, Mazor, Tali, McDonald, Kerrie L., Sa, Jason K., Iavarone, Antonio, Reifenberger, Guido, Abiola, Olajide, Bruns, Alexander F., Chakrabarty, Aruna, Rao, Ganesh, Westerman, Bart A., Gould,

2019

Overview

The evolutionary processes that drive universal therapeutic resistance in adult patients with diffuse glioma remain unclear 1 , 2 . Here we analysed temporally separated DNA-sequencing data and matched clinical annotation from 222 adult patients with glioma. By analysing mutations and copy numbers across the three major subtypes of diffuse glioma, we found that driver genes detected at the initial stage of disease were retained at recurrence, whereas there was little evidence of recurrence-specific gene alterations. Treatment with alkylating agents resulted in a hypermutator phenotype at different rates across the glioma subtypes, and hypermutation was not associated with differences in overall survival. Acquired aneuploidy was frequently detected in recurrent gliomas and was characterized by IDH mutation but without co-deletion of chromosome arms 1p/19q, and further converged with acquired alterations in the cell cycle and poor outcomes. The clonal architecture of each tumour remained similar over time, but the presence of subclonal selection was associated with decreased survival. Finally, there were no differences in the levels of immunoediting between initial and recurrent gliomas. Collectively, our results suggest that the strongest selective pressures occur during early glioma development and that current therapies shape this evolution in a largely stochastic manner. The GLASS Consortium studies the evolutionary trajectories of 222 patients with a diffuse glioma to aid in our understanding of tumour progression and treatment failure

• Publisher: Nature Publishing Group UK,Nature Publishing Group
• Subject: 45/23 / 631/114/2785 / 631/67/1922 / 631/67/69 / Adult / Adults / Alkylating agents / Alkylation / Aneuploidy / Annotations / Bioinformatics / Brain cancer / Cancer / Cancer therapies / Care and treatment / Cell cycle / Chromosome deletion / Chromosomes / Chromosomes, Human, Pair 1 / Chromosomes, Human, Pair 19 / Clonal deletion / Datasets / Deoxyribonucleic acid / Development and progression / Disease Progression / DNA / DNA methylation / DNA sequencing / Drug resistance / Gene deletion / Genetic aspects / Genomes / Glioma / Glioma - genetics / Glioma - pathology / Gliomas / Humanities and Social Sciences / Humans / Isocitrate Dehydrogenase - genetics / Molecular diagnostic techniques / Molecular trajectories / multidisciplinary / Mutation / Patients / Phenotypes / Polymorphism, Single Nucleotide / Recurrence / Relapse / Science / Science (multidisciplinary) / Survival / Tumors / Vaccines