LRRK2 and neurodegenerative disease: To highlight the challenges and opportunities of identifying such variants, we manually curated gnomAD data and the scientific literature for six genes associated with gain-of-function (GoF) neurodegenerative diseases, for which inhibitors or suppressors are under development30–35: HTT (Huntington's disease), MAPT (tauopathies), PRNP (prion disease), SOD1 (amyotrophic lateral sclerosis), and LRRK2 and SNCA (Parkinson's disease).