Furthermore, both serum PDGF-AA and PDGF-BB levels were associated with tumor mRNA level of PDGFA (R = 0.391, p = 0.009 and R = 0.475, p = 0.001, respectively), PDGFB (R = 0.313, p = 0.041, and R = 0.415, p = 0.006, respectively), and PDGFRA (R = 0.319, p = 0.037 and R = 0.424, p = 0.005, respectively; Figure S1). Here, PDGFB is linked to neoplasm.