More detailed information is available as Supp Data. In brief; MTS and clonogenicity assays were performed as previously described (26 ). Western blot analyses were performed by standard methods (26 ). ELISA HGF and VEGF levels were measured in MPNST cell conditioned media using enzyme-linked immunosorbent assay (ELISA). The assays were constructed and preformed following manufacturer’s instructions (R&D, Minneapolis, MN). Migration and invasion assays were conducted using modified Boyden chambers as previously described (27 (link)). qRTPCR for MMP2 was conducted as previously described (28 (link)).MET gene sequencing procedure and primers as well as siRNA and shRNA transfection and transduction procedures are detailed in Supp data.