GATA3 and neoplasm: The second half showed significantly higher mRNA expression levels of the Uro‐diff gene signature (Figure 4B; supplementary material, Figure S4), as well as of the key transcription factors FOXA1 and GATA3 (Figure 4C; supplementary material, Figure S4), and appeared to be indistinguishable from GU cases at the tumour‐cell level.