PT - JOURNAL ARTICLE AU - Clarke, Matthew AU - Mackay, Alan AU - Ismer, Britta AU - Pickles, Jessica C. AU - Tatevossian, Ruth G. AU - Newman, Scott AU - Bale, Tejus A. AU - Stoler, Iris AU - Izquierdo, Elisa AU - Temelso, Sara AU - Carvalho, Diana M. AU - Molinari, Valeria AU - Burford, Anna AU - Howell, Louise AU - Virasami, Alex AU - Fairchild, Amy R. AU - Avery, Aimee AU - Chalker, Jane AU - Kristiansen, Mark AU - Haupfear, Kelly AU - Dalton, James D. AU - Orisme, Wilda AU - Wen, Ji AU - Hubank, Michael AU - Kurian, Kathreena M. AU - Rowe, Catherine AU - Maybury, Mellissa AU - Crosier, Stephen AU - Knipstein, Jeffrey AU - Schüller, Ulrich AU - Kordes, Uwe AU - Kram, David E. AU - Snuderl, Matija AU - Bridges, Leslie AU - Martin, Andrew J. AU - Doey, Lawrence J. AU - Al-Sarraj, Safa AU - Chandler, Christopher AU - Zebian, Bassel AU - Cairns, Claire AU - Natrajan, Rachael AU - Boult, Jessica K.R. AU - Robinson, Simon P. AU - Sill, Martin AU - Dunkel, Ira J. AU - Gilheeney, Stephen W. AU - Rosenblum, Marc K. AU - Hughes, Debbie AU - Proszek, Paula Z. AU - Macdonald, Tobey J. AU - Preusser, Matthias AU - Haberler, Christine AU - Slavc, Irene AU - Packer, Roger AU - Ng, Ho-Keung AU - Caspi, Shani AU - Popović, Mara AU - Faganel Kotnik, Barbara AU - Wood, Matthew D. AU - Baird, Lissa AU - Davare, Monika Ashok AU - Solomon, David A. AU - Olsen, Thale Kristin AU - Brandal, Petter AU - Farrell, Michael AU - Cryan, Jane B. AU - Capra, Michael AU - Karremann, Michael AU - Schittenhelm, Jens AU - Schuhmann, Martin U. AU - Ebinger, Martin AU - Dinjens, Winand N.M. AU - Kerl, Kornelius AU - Hettmer, Simone AU - Pietsch, Torsten AU - Andreiuolo, Felipe AU - Driever, Pablo Hernáiz AU - Korshunov, Andrey AU - Hiddingh, Lotte AU - Worst, Barbara C. AU - Sturm, Dominik AU - Zuckermann, Marc AU - Witt, Olaf AU - Bloom, Tabitha AU - Mitchell, Clare AU - Miele, Evelina AU - Colafati, Giovanna Stefania AU - Diomedi-Camassei, Francesca AU - Bailey, Simon AU - Moore, Andrew S. AU - Hassall, Timothy E.G. AU - Lowis, Stephen P. AU - Tsoli, Maria AU - Cowley, Mark J. AU - Ziegler, David S. AU - Karajannis, Matthias A. AU - Aquilina, Kristian AU - Hargrave, Darren R. AU - Carceller, Fernando AU - Marshall, Lynley V. AU - von Deimling, Andreas AU - Kramm, Christof M. AU - Pfister, Stefan M. AU - Sahm, Felix AU - Baker, Suzanne J. AU - Mastronuzzi, Angela AU - Carai, Andrea AU - Vinci, Maria AU - Capper, David AU - Popov, Sergey AU - Ellison, David W. AU - Jacques, Thomas S. AU - Jones, David T.W. AU - Jones, Chris TI - Infant High-Grade Gliomas Comprise Multiple Subgroups Characterized by Novel Targetable Gene Fusions and Favorable Outcomes AID - 10.1158/2159-8290.CD-19-1030 DP - 2020 Jul 01 TA - Cancer Discovery PG - 942--963 VI - 10 IP - 7 4099 - http://cancerdiscovery.aacrjournals.org/content/10/7/942.short 4100 - http://cancerdiscovery.aacrjournals.org/content/10/7/942.full SO - Cancer Discov2020 Jul 01; 10 AB - Infant high-grade gliomas appear clinically distinct from their counterparts in older children, indicating that histopathologic grading may not accurately reflect the biology of these tumors. We have collected 241 cases under 4 years of age, and carried out histologic review, methylation profiling, and custom panel, genome, or exome sequencing. After excluding tumors representing other established entities or subgroups, we identified 130 cases to be part of an “intrinsic” spectrum of disease specific to the infant population. These included those with targetable MAPK alterations, and a large proportion of remaining cases harboring gene fusions targeting ALK (n = 31), NTRK1/2/3 (n = 21), ROS1 (n = 9), and MET (n = 4) as their driving alterations, with evidence of efficacy of targeted agents in the clinic. These data strongly support the concept that infant gliomas require a change in diagnostic practice and management.Significance: Infant high-grade gliomas in the cerebral hemispheres comprise novel subgroups, with a prevalence of ALK, NTRK1/2/3, ROS1, or MET gene fusions. Kinase fusion–positive tumors have better outcome and respond to targeted therapy clinically. Other subgroups have poor outcome, with fusion-negative cases possibly representing an epigenetically driven pluripotent stem cell phenotype.See related video: https://vimeo.com/438254885See related commentary by Szulzewsky and Cimino, p. 904.This article is highlighted in the In This Issue feature, p. 890