The mRNA levels for the Slc40a1 gene encoding FPN assessed by real-time RT-PCR were compatible in SCD and control mice (Figure 3A, Slc40a1-A delta Ct, −1.24 ± 0.39 in SCD vs. −1.9 ± 0.06 in control, p = 0.1165). Here, SLC40A1 is linked to Schnyder corneal dystrophy.