Interestingly, inflammatory cytokine and neurotrophic factor levels are higher in eyes with non-proliferative diabetic retinopathy (NPDR) than in eyes with active PDR, although the authors stated that serum/plasma proteins might have leaked into the vitreous and diluted the relative amount of NTs and cytokines in PDR patients. The gene discussed is NTF3; the disease is non-proliferative diabetic retinopathy.