Glioblastoma (GBM) is a malignant central nervous system neoplasm that remains largely incurable. Limited treatment options currently exist after disease progression on standard-of-care first-line therapy. However, repurposing the use of approved therapies in patients with potentially targetable genomic alterations continues to be an emerging area of interest. This report presents the first description of a patient with isocitrate dehydrogenase wild-type GBM with an underlying RET amplification who demonstrated a near-complete response while receiving therapy with the RET inhibitor selpercatinib. The case highlights the excellent blood-brain barrier penetration of selpercatinib, as well as its potential role in the management of RET-amplified GBM. Larger biomarker-enriched studies are needed to confirm the results of this case report. Given the rare incidence of RET alterations in GBM, findings from this report can help guide and support optimal treatment strategies for patients with RET-altered GBM.
Cameron Czech, Ashley Chen, Katherine P. Morgan, Carlos Zamora, Sherif El-Refai, Norleena Poynter, and Simon Khagi
Featured Updates to the NCCN Guidelines
Chrysalyne D. Schmults, Rachel Blitzblau, Sumaira Z. Aasi, Murad Alam, James S. Andersen, Brian C. Baumann, Jeremy Bordeaux, Pei-Ling Chen, Robert Chin, Carlo M. Contreras, Dominick DiMaio, Jessica M. Donigan, Jeffrey M. Farma, Karthik Ghosh, Roy C. Grekin, Kelly Harms, Alan L. Ho, Ashley Holder, John Nicholas Lukens, Theresa Medina, Kishwer S. Nehal, Paul Nghiem, Soo Park, Tejesh Patel, Igor Puzanov, Jeffrey Scott, Aleksandar Sekulic, Ashok R. Shaha, Divya Srivastava, William Stebbins, Valencia Thomas, Yaohui G. Xu, Beth McCullough, Mary A. Dwyer, and Mai Q. Nguyen
The NCCN Guidelines for Squamous Cell Skin Cancer provide recommendations for diagnostic workup, clinical stage, and treatment options for patients with cutaneous squamous cell carcinoma. The NCCN panel meets annually to discuss updates to the guidelines based on comments from panel members and the Institutional Review, as well as submissions from within NCCN and external organizations. These NCCN Guidelines Insights focus on the introduction of a new surgical recommendation terminology (peripheral and deep en face margin assessment), as well as recent updates on topical prophylaxis, immunotherapy for regional and metastatic disease, and radiation therapy.