MTF1 and intervertebral disk degenerative disorder: There existed significantly positive correlations in the gene expression levels of MTF1-ATP7B, PDHB-DLAT, PDHB-DLST, DLAT-DLST, DLAT-GCSH, DLST-GCSH, PDHB-GCSH, DLAT-LIPT1, DLST-LIPT1, GCSH-LIPT1, and PDHB-LIPT1 in IDD cases (Figure 3A–3K), while the gene expression levels of ATP7B-DLST in IDD cases exhibited significantly negative correlation (Figure 3L).