(a) EDHB inhibits invasiveness of PMWK 3-dimensional tumor spheroids. Representative images from two independent experiments performed in triplicate. Spheroids were imaged at ×2 on days 0, 3, and 6 post treatment.(b) Quantification of the effect of EDHB on PMWK 3-dimensional spheroid invasion. Spheroids were imaged at ×2 on days 0, 3, and 6 post treatment. Data are mean ± standard error of the mean (n = 2) performed in triplicate. Significance was compared to the appropriate control using two-way analysis of variance with Tukey’s post-hoc testing. (c) Overexpression of C-P4H genes is associated with worse disease-free survival in melanoma. Kaplane–Meier plots by gene expression were created using the “Tumor Melanoma-Jönsson-214-custom-ilmnht12v4” data set (n = 214) (Cirenajwis et al., 2015). EDHB, ethyl dihydroxybennzoic acid.