Analysis of published mass spectrometry data profiling 27 non-small cell lung cancer and 4 breast cancer cell lines29 shows a very strong correlation of EphA2 S897 phosphorylation with phosphorylation on T898, S899 and S901 and a weaker correlation with S892 phosphorylation (Supplementary Fig. 1e). The gene discussed is EPHA2; the disease is breast cancer.