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MPNSTs (malignant peripheral nerve sheath tumors) are a highly malignant group of soft tissue sarcomas and carry a very poor prognosis. Metastasis to bilateral adrenal glands is very rare in such group of neoplasms. We discuss a case of 85-year-old man who was diagnosed with MPNST from prevertebral
src, abl, and fps/fes are prototypes for a family of genes encoding nonreceptor protein-tyrosine kinases. The oncogenic potential of the v-fps protein-tyrosine kinase was investigated by introduction of the gag-fps coding sequence of Fujinami sarcoma virus into the mouse germ line. Transgenic mice
Tyrosine kinase inhibitors against the receptors of vascular endothelial growth factor (VEGFR), epidermal growth factor (EGFR) and the platelet derived growth factor (PDGFR) are increasingly used in the treatment of progressive cancers. However, the expression of these receptors especially in lung
Malignant peripheral nerve sheath tumors (MPNST) are highly resistant sarcomas that occur in up to 13% of individuals with neurofibromatosis type I (NF1). Genomic analysis of longitudinally collected tumor samples in a case of MPNST disease progression revealed early hemizygous microdeletions in NF1
Malignant peripheral nerve sheath tumor (MPNST) is rare, highly aggressive, resistant to radiochemotherapy, and associated with poor prognosis. Basic research to develop new treatment regimes is critically needed. This study was designed to identify motogenic factor(s) involved in MPNST cell
Malignant peripheral nerve sheath tumors (MPNSTs) are rapidly progressive Schwann cell neoplasms. The erbB family of membrane tyrosine kinases has been implicated in MPNST mitogenesis and invasion and, thus, is a potential therapeutic target. However, tyrosine kinase inhibitors (TKIs) used alone
Neurofibromatosis Type 1 (NF1) is characterized by the abnormal proliferation of neuroectodermal tissues and the development of certain tumors, particularly neurofibromas, which may progress into malignant peripheral nerve sheath tumors (MPNSTs). Effective pharmacological therapy for the treatment
BACKGROUND
Sorafenib and dacarbazine have low single-agent response rates in metastatic sarcomas. As angiogenesis inhibitors can enhance the efficacy of chemotherapy, we investigated the combination of sorafenib and dacarbazine in select sarcoma subtypes.
METHODS
Patients with leiomyosarcoma (LMS),
Loss of the RAS GTPase-activating protein (RAS-GAP) NF1 drives aberrant activation of RAS/MEK/ERK signaling and other effector pathways in the majority of malignant peripheral nerve sheath tumors (MPNST). These dysregulated pathways represent potential targets for therapeutic intervention. However,
BACKGROUND
Synovial sarcomas (SnSrcs) and malignant peripheral nerve sheath tumors (MPNSTs) are rare mesenchymal tumors of adolescence and young adulthood. Previous work from our laboratory has demonstrated that SnSrcs express epidermal growth factor receptor (EGFR) and human EGFR (HER)-2/neu. The
Malignant schwannomas or malignant peripheral nerve sheath tumors (MPNST) represent approximately 10% of all soft tissue sarcomas. Metastatic disease from chest wall MPNST is very rare. We present a case of a major clinical response to the tyrosine kinase inhibitor (TKI) sorafenib in a patient with
OBJECTIVE
MET signaling has been suggested a potential role in malignant peripheral nerve sheath tumors (MPNST). Here, MET function and blockade were preclinically assessed.
METHODS
Expression levels of MET, its ligand hepatocyte growth factor (HGF), and phosphorylated MET (pMET) were examined in a
Malignant peripheral nerve sheath tumors (MPNSTs) are aggressive sarcomas that arise most commonly in the setting of the Neurofibromatosis Type 1 (NF1) cancer predisposition syndrome. Despite aggressive multimodality therapy, outcomes are dismal and most patients die within 5 years of We investigated the activation of platelet-derived growth factor (PDGF) receptor A (PDGFRA), PDGF receptor B (PDGFRB), epidermal growth factor receptor (EGFR), and their downstream pathways in malignant peripheral nerve sheath tumors (MPNSTs). PDGFRA, PDGFRB, and EGFR were immunohistochemically,
Malignant peripheral nerve sheath tumors (MPNSTs) are aggressive sarcomas that arise at an estimated frequency of 8% to 13% in individuals with neurofibromatosis type 1 (NF1). Compared with their sporadic counterparts, NF1-associated MPNSTs (NF1-MPNSTs) develop in young adults, frequently recur