As well, the FT levels were low in aqueous (12.73 ± 1.39 vs. 41.71 ± 14.43 pg/mL; AD vs. ctr; p > 0.05) and vitreous (41.71 ± 69.29 vs. 128.97 ± 4.35 ng/mg; AD vs. ctr; p < 0.05) fluid from AD-diagnosed patients with VDR, as validated by ELISA (Figure 6B–D). The gene discussed is VDR; the disease is Alzheimer disease.