PEX1 and Hyperoxaluria: It has been associated with hyperoxaluria with NL and NC with variants in PEX1 and PEX3 (van Woerden et al., 2006; Maxit et al., 2017), likely with variants in PEX5 (van Woerden et al., 2006), and possibly with variants in PEX6, PEX7, PEX10, PEX11, PEX12, PEX13, PEX16, and PEX26 (Braverman et al., 2016; Alhazmi, 2018).