SLC40A1 and hemochromatosis type 4: We found three promising candidates: NOL4, SLC35F1, and SLC40A1. In particular, SLC40A1 has been found associated with hemochromatosis type 4, a disease highly related to iron deposition.14,15 Indeed, when we went back to the patient, we found that he or she had elevated serum-ferritin and possibly iron deposits on brain magnetic resonance imaging (MRI; because he had bilateral signal alterations of basal ganglia).