POSTN and Schnyder corneal dystrophy: The sudden death group also showed increased expression of periostin in the myocardium of the animals that died suddenly compared to controls [Periostin (CTF): Non-SCD, 8736 ± 629.5; SCD, 11,453 ± 888.2; p = 0.0463, n = 5–6] (Figure 3B,D).