PARK7 and Parkinson disease: Subsequently, it was named Parkinson’s disease (PD)-associated protein 7 (PARK7) in 2003 as it is able to protect neurons from oxidative stress (Bonifati et al., 2003). Waragai et al. (2006) found a higher level of DJ-1 in the cerebrospinal fluids of sporadic Parkinson’s disease in 2006.