SCARB2 and Parkinson disease: Recent data have postulated that interaction between LIMP‐2 and GCase is abolished once the transporting complex reaches the acidic environment of the lysosome.[66, 67] However, we show that LIMP‐2 increases GCase activity under acidic conditions and that a LIMP‐2‐mimicking peptide can bind and increase GCase activity within lysosomes of PD patient‐derived fibroblasts.