Neuregulin 1 (nrg1), a substrate of BACE1, is a pre‐synaptic protein thought to be implicated in a number of neurodegenerative diseases and psychiatric/neurodevelopmental disorders such as AD, attention deficit hyperactive disorder (ADHD) and schizophrenia (Shi & Bergson, 2020). The gene discussed is NRG1; the disease is Alzheimer disease.