NRP1 and neoplasm: Compared to normal tissues, NRP1 mRNA expression was significantly increased in most clinicopathological characteristics of STAD; tumor stage (Stage 2, Stage 3 and Stage 4), race (Caucasian and Asian), gender (male and female), age (41–60, 61–80, and 81–100 years old), and tumor grade (Grade 2) as shown in Figure 2a–f.