THY1 and Parkinson disease: In saying this, the pattern of pSer129 α-SYN deposition seen in A53T mice differs to those established in other PD animal models such as the Thy-1 A30P mouse and human patients where pSer129 α-SYN has been localized to the inner retina (Veys et al., 2019, 2021), particularly in the ganglion cell layer (GCL) and inner plexiform layer (IPL).