Wang et al. evaluated VEGF expression in 197 PitNETs without finding any association with D2R expression and clinical features (aggressive, recurrence, tumor texture, and bromocriptine application) [233], while Cristina et al. documented a higher concentration and expression of mRNA VEGF in D2R knockout mice than the wild-type group [234]. The gene discussed is DRD2; the disease is neoplasm.