Among these tools, the most interesting tumor marker is Met (a hepatocyte growth factor receptor), which is a transmembrane receptor protein that has been implicated in the pathogenesis of glioblastomas (GBMs) through autocrine and/or paracrine mechanisms that potentially affect tumor cell growth, survival, invasion, migration, and angiogenesis5, 6, 7, 8. The gene discussed is NRP1; the disease is neoplasm.