Meanwhile, sarcopenia is associated with type 2 diabetes in the elderly [28] and, in a re-analysis of public microarray data from human skeletal muscle biopsies, Su et al. found that three age-related genes were associated with type 2 diabetes [29]; two of them, Cd163 and Gadd45a (the remained Znf415 was missed in our study) were classified as the L-aging (Padj = 1.0 x 10-5) and E-aging genes (8.8 x 10-11), respectively. The gene discussed is GADD45A; the disease is sarcopenia.