ABCG2 and cancer: Additionally, we queried the TCGA melanoma pan-cancer dataset and segregated the patients as GHR-high (above mean GHR FPKM value; n = 117) and GHR-low (below mean GHR FPKM value; n = 354) to look at MITF and MITF targets as well as ABC-transporter expression levels in male and female patients.