TGFB1 and malignant mesothelioma: Additionally, using the Proteome Profiler Array, we identified that other angiogenesis-related proteins including HGF, TGF-β1, FGF-4, NRG1-β1 are significantly upregulated in malignant mesothelioma cells, suggesting that these proteins may also have a prognostic and angiogenic role in MPM.