This was further supported by a recent study using single‐cell genomic profiling of human dopaminergic neurons that identified a high expression of angiotensin type 1 receptor (AT1) gene as a marker of the most vulnerable dopaminergic neurons in humans, including PD patients13, and by recent clinical studies showing neuroprotective effects of AT1 receptor blockers on PD risk14,15. Here, AGTR1 is linked to Parkinson disease.