Although the exact causal variant at the 5′ GWAS signal of LRRK2 is unknown,16, 17 it has been shown in a relatively small cohort of 1381 PD patients and 1328 controls that the 5′ signal had a low degree of correlation with known coding susceptibility variants, including p.M1646T and protective haplotype p.N551K‐R1398H‐K1423K, indicating the independence of this GWAS signal.18 The gene discussed is LRRK2; the disease is Parkinson disease.