Usenko T.S., Timofeeva A., Beletskaia M., Basharova K., BaydakovaG., Bezrukova A., Grunina M., Emelyanov A., Miliukhina I.,Zakharova E., Pchelina S. The effect of p.G2019S mutation in theLRRK2 gene on the activity of lysosomal hydrolases and the clinicalfeatures of Parkinson’s disease associated with p.N370S mutationin the GBA1 gene. The gene discussed is GBA1; the disease is Parkinson disease.