LYN and Parkinson disease: The RAF1 expression levels were found to be positively correlated with UPDRS I (r = 0.075, p = 0.18); UPDRS II (r = 0.118, p = 0.036); UPDRSIII (r = 0.145, p = 0.014); UPDRS IV (r = 0.109, p = 0.050), implying that LYN and RAF1 are directly linked to the severity of PD.