PLA2G6 and neurodegeneration with brain iron accumulation: To identify that possible interactions between PLA2G6 and PANK2 proteins and other partners may play important roles in pathogenesis of NBIA and other neurodegenerative disorders, we used STRING software and as shown in Figs. 4 and 5, several predicted functional partners interacting PLA2G6 and PANK2 were identified.