Immunofluorescence staining of tissue samples showed down‐regulation of Ki‐67 and PCNA levels but up‐regulation of PARP levels in T24 QKI‐6 overexpressing tumour cell xenografts, whereas knockdown of QKI‐6 expression had the opposite effects (Figure S3A‐E). The gene discussed is MKI67; the disease is neoplasm.