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Combination therapies for MPNSTs targeting RABL6A-RB1 signaling
Journal article   Open access   Peer reviewed

Combination therapies for MPNSTs targeting RABL6A-RB1 signaling

Jordan L Kohlmeyer, David J Gordon, Munir R Tanas, Rebecca D Dodd, Varun Monga, Benjamin W Darbro and Dawn E Quelle
Oncotarget, Vol.12(1), pp.10-14
01/05/2021
DOI: 10.18632/ONCOTARGET.27862
PMCID: PMC7800773
PMID: 33456709
url
https://doi.org/10.18632/ONCOTARGET.27862View
Published (Version of record) Open Access

Abstract

Precision medicine relies on a detailed molecular understanding of disease pathogenesis. Here, we consider urgently needed therapeutic options for malignant peripheral nerve sheath tumors (MPNSTs) based on emerging insights into druggable pathway alterations found to drive this deadly cancer. Recent observations demonstrate an essential role for an oncogenic GTPase, RABL6A, in promoting MPNST progression through hyperactivation of cyclin-dependent kinases (CDKs) and inactivation of the retinoblastoma (RB1) tumor suppressor. Monotherapies with CDK4/6 inhibitors have shown limited efficacy and durability in pre-clinical studies of MPNSTs and in clinical studies of other tumors. Therefore, we discuss the rationale and clinical benefits of inhibiting multiple RABL6A effectors, particularly CDK4/6 and MEK kinases, in targeted combination therapies suitable for MPNSTs and other Ras-driven malignancies.
targeted cancer therapy Ras MPNST CDK4/6 and MEK inhibitors RABL6A-RB1 signaling

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