LIMP2 levels did not differ from controls in either Gaucher disease {median 93% of control [interquartile range (IQR) 90–105%], Mann-Whitney U-test P = 0.33}, Parkinson’s disease with GBA mutations [median 93% of control (IQR 90–100%), P = 0.12] or non-manifesting carrier [median 95% (IQR 90–105%) P = 0.1] fibroblasts (data not shown). Here, GBA1 is linked to Parkinson disease.