Elevated ROS has been implicated as a pathological feature of PD; WT‐LRRK2 may be neuroprotective, attenuating H2O2‐induced cell‐death in HEK293 and SH‐SY5Y cells 149, whereas iPS cells carrying the G2019S mutation were found to be more sensitive to H2O2 exposure with increased caspase 3 activation and cell death 150. The gene discussed is LRRK2; the disease is Parkinson disease.