NDP and Norrie disease: Only 400 cases of Norrie disease have been documented worldwide (Sowden et al., 2020), associated with more than 115 Ndp mutations (Yamada et al., 2001; Halpin et al., 2005; Allen et al., 2006; Parzefall et al., 2014; Andarva et al., 2018; Rodríguez-Muñoz et al., 2018).