We used the z-score normalisation methods to segregate the patient’s tumours into two groups of cancers: those cancers with higher levels of ELF4 (which we named as the "high-ELF4 tumours"; 3,887 samples) and those with a lower level of ELF4 ("low-ELF4 tumours"; 5,463 samples; see Methods sections). The gene discussed is ELF4; the disease is neoplasm.