title: Erratum.
abstract: The authors have modified few sentences and figures in the article entitled as "Age-related decrease of sirtuin 2 protein in human peripheral blood mononuclear cells" published in the journal "Current Aging Science" Vol. 8, Issue no. 3. The correct sentences and figures are as follows: METHODS SECTION "The healthy control group consisted of 91 volunteers (aged 20 to 58 years old, male: 46 cases, female: 45 cases). Exclusion criteria were immune disorders, diabetes, metabolic diseases or malignant diseases." RESULTS SECTION An inverse correlation between the SIRT2 level and donor age was observed (Fig. 1, r= -0.28). Noteworthy, concentrations of SIRT2 in PBMCs, which were analyzed by ELISA, also showed an inverse correlation with donor age (Fig. 2, r= -0.25).