FAS and Thiel-Behnke corneal dystrophy: The p.(Ser591Phe) variant is located in the FAS1-4 domain.Interestingly, pathogenic variants in codon 555 in this domain, Arg555Trp andArg555Gln, cause granular corneal dystrophy type 1 (GCD1) and Thiel-Behnke cornealdystrophy (TBCD), respectively, which are characterized by non-amyloid deposits.