Additionally, the basal expression of GSTM1 in the GSTM family was the highest in CFs, and the pseudo-time series analysis showed that the changes of GSTM1 after MI were negatively correlated with the changes of fibrosis indexes (Additional file 1: Figs. S2-4). This evidence concerns the gene GSTM1 and myalgic encephalomeyelitis/chronic fatigue syndrome.