SLC3A2 and Schnyder corneal dystrophy: The levels of ferritin heavy chain (Fth1) mRNA were higher in SCD mice compared to control mice (Figure 2E, Fth1-Actb delta Ct 5.34 ± 0.62 in SCD vs. 4.86 ± 0.41 in control, p = 0.0171).