In contrast, instead of suggesting SMARCA4 as a tumour suppressor gene, Kaufmann et al45 provided evidence that the over‐expression of SMARCA4 was observed to enhance cell growth and invasiveness of HCC and that it might be linked to cyclin B, cyclin E and matrix metalloproteinase 7 (MMP7). This evidence concerns the gene MMP7 and hepatocellular carcinoma.