Furthermore, studies of fibroblasts and chondrogenic cells derived from embryonic carcinomas and chondrosarcomas have indicated that FGF signaling decreases NPR2 activity (Chrisman and Garbers, 1999; Ozasa et al., 2005; Robinson et al., 2017), and that the inactivation is due to dephosphorylation of NPR2 (Robinson et al., 2017). The gene discussed is NPR2; the disease is embryonal carcinoma.