Overall, GATA3 was evaluable in 608 (87%) of the 702 BC cases, and was positive (≥1%) in 413 (68%) cases and negative (<1%) in 195 (32%) cases, with a GATA3 median percentage of 50% (range 0–100%) and a median histological score of 60 (Figure 1A). The gene discussed is GATA3; the disease is breast cancer.