Of note in this context, EPG5 (known as KIAA1632 at the time) was initially found to be mutated in breast cancer (Halama et al., 2007), and there is a precedent of an increased frequency of Parkinson’s disease in families with lysosomal storage disorders (for review, see Brockmann and Berg, 2014). Here, EPG5 is linked to breast carcinoma.