NRP1 and cancer: One-way ANOVA with Dunnett’s multiple comparisons test revealed that the differences of mean RSEM of NRP1 between ccRCC (RSEM = 10,391) and other cancer types were significant (p < 0.0001), and that of mean RSEM of NRP2 expressed in SKCM (RSEM = 6,475) compared to other cancer types also showed a significant difference (p < 0.0001) (Supplementary Table S1).