Activated glia express TrkC.T1 mRNA at the onset of neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS) (Brahimi et al., 2016), glaucoma (Bai et al., 2010), and retinitis pigmentosa (Galan et al., 2017). Here, NTRK3 is linked to retinitis pigmentosa.