NFE2L2 and Parkinson disease: In the present study, we investigated four genetic variants in NRF2, rs35652124 (A>G), rs6706649 (G>A), rs6721961 (C>A), and rs2001350 (A>G), and their possible association with PD in our large homogenous Swedish case-control material in order to expand on the knowledge on NRF2 genetic variations as a risk factor in PD.